1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc5233632e403fe070758f028e971e7d8b5a0e079a0ccee85e941c1a880060. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6b725fe-90bc-48f4-8f3a-9e8aaf78d6c3.json and https://artists.proofprofile.net/proofs/artist/d6b725fe-90bc-48f4-8f3a-9e8aaf78d6c3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435947206ca6e8ec94ce2bc754568c24a078ce025a87b69d1dc0220b9e13e406. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153374cae16e201f7476881fdbc13c7215c74784bfbafcdc8807c825ebd91587. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51157564cb2674abf0d5aa0cfa1320fbaf9a32f612bfb0a25693f2401438fa64. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacc06db49ae25581b6b3214189da87be93db166e1d0a0e0914b900024b88ace. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b4a39b86d82798c74b11df452fffec8b7eeeb2413f2d3eef09b6c9cf370b2f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84837221fbf3e3646c3093929fe6a5d9e3de4d2d88272b56d0fa8c00a7b3fa67. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c1002fbc880fd428329baa381b1f3601cb090891180bd46af7964479a26c96. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf20199e9a08428581f05dca28467fa6da3fffacb154a257d9a52c2692943783. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae1d0a078fbeb8c35fda7898f5786122622c8b001439f15937ae8eaa10db892. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72400237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5edb898d33194776063a710bce89590608e10674aa44d36ae7f1a4a826168b36. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9652d6b04bfb48a165e06ee6a981c2bfd068acaad504eccabe7b989a60e3ed61. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2983aa1ec16c99d07d26fc6b072abee57550de0dcdb2195943f777c7486ab0c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa6b6f9e9b4dbe81265196c7156cfd465c54e1e45f353222910a5299a53cd8d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb22a2d3c7495ad92408e0ce9fc9b7f82fe9a1b8faf31cea0b04da0584ca4ac5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8321da9052bae15ddf2d6fc0c1b78cbcad7163f1371019b4cc97f27775b16a69. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fe8272bc77753d373ae3da3aeea546c8ed337e809e54a6df56bdca35134f47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f46807c9b3879d06f756d6f5bd88225a0e260e08d61e8fc9f09b632c5ea032. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ce81203f3dee088bf0eccb53ae886cd86278eb18f10d8695b77a2b5b7743c2. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6664773ac40afbac70f53c99f1e7daa3e5bc815861969f4cfb4f534f548dd742. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21aebd75ac33bdce6b95acd1fc63834ffff0e1bd7382dc55051d6c1beab992f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878cc740f494002a656c4447a575c31f4d7f51fdbc3f4d0f1c127aef959ea2a8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8bf386c230accb7b4eccc794b4ae65b2ff80041890b47b3f731d4dd6a4e887. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157a3bd19e3c6f6c63da0372ba12d8b1a3f66121f2a91b61a6df25322dc99772. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4503c0b1330098772d36864a657de8ac2f749ba6e6dd80d0fd44e81de84678e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a86f7e304acc60fc449a51a7d3289d7350e1b3e757f575f5297f8c8f6c3340d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72202643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908320cb05966a2afe0239bcfb2b9b90cf091d4924d1b6fe5d414aa284a23c52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72102107.
Malunde (feat. Thatohatsi & MDU a.k.a TRP)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00f589bcebf5a45bc237b4c6d29517a37661646b4667fe8f3a0ac2156c7f44c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400371.
Deliwe (feat. Thatohatsi, Tracy, D-Sax & Ntando Yamahlubi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8242f91a76028c33bfdb57ab3fd66a75fe38289de3e948ece5b6d59d951280. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400372.
Amaphutha (feat. Mashudu, MDU a.k.a TRP & Springle)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015ae3438ac41715d2f6feab78ab7adbb72683076f6268e518c7040395395cbc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400373.
Into Ezayo (feat. MDU a.k.a TRP & Tracey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2f0f9b45b61667cfb864aa38c74687354bbf57a62064a686fb3f633015f1df4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79fe3f029dedc83b156b0b49009b1aef39c4a401a379051fd817fe992722956. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400375.
TANA (feat. Thatohatsi, Mkeyz & Ntando Yamahlubi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365305c278610f3ef23ea5c3006b3a059074458081982f1e6b193bb8488bde49. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a36dcc529fe80ad08404cf633a59d6297c30c90fb9f40e431aa3574c3278df. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7499a30c8dbd16dbc62cff72281acd56350e9381dc8258c231b00e1cc66ed0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400378.
Emendweni (feat. Thatohatsi, Ntando Yamahlubi & Shino Kikai)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c9fc59a3430fbb41276a512b503be766d2f89939859871e0a25250a5e909b0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690b05af77388d592eb3d22461f0dd405dce3a36612ea438bda77dedaade825a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5431ecb2dbf2c2288ba58999a8c40fcb932c230840fa287d8e0649fecd026275. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92431f922ac934019965288c07bb8028b5e979f20a3ef2d86e5a33c80c7416be. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:16:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed858c7a17a087baabf1fb19ce0daa25c6fc860c5b34eede3f90aaf145fd671b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ff09993b99685e8872b94c0b7d92b7c3134bd00f706ede29c1ea19e755322. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZB88P2400384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f45136e7e46e416a709e396c653133df1660a727d62c99d85e5ee933f8297c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fac66c30d606aca3dd940f64b1f40bf5ed9b37e7e162633a5ab687ec6af5d22. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0299aa1cb8c6e6f6c25668b8069226ec5772414bec37b402fb4e59f47a60897. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b93a6adb61ccffc21074c6a73bae80bc6d0c1786aa13933f6bda984889d5b5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993ede21e1724e1d335ed36d12237fa60a93cfcf86243983a7b7b22220365233. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a340240b1d604020e455a501df64e2305fdb3a7bf059b8e87a5fbf0f6227d3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4173b312cc63dac739dd1ff1f157db87c2275f76fa2f64db816feaa32273c82. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc595df62a8664c8456865f180a3fe4fcc3b50dbf304a6e8f4859f3ec33920f7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb475482ee864c42bc77235bdae05ecfb07fbae3db5d44e35e86947e64bd8a362. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f46fd2a3ee99beffca998b340b0d80494a32dd48d3b333337f6fab6b7f9a09. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1be271208cbcfc71d7392d8babca830ec7c2d387586768190ee9600ab32373e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291fe57d578817567be249cc599668b2fbde81c1c58a574d1f4d1c11d2ca5ad2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZA9B42100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9fc80c7de1a702297af923a814dcbfc5eea3f07112a224919bcf5d79ee4a75b. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100024.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8323b40b70427edea9de366ad012cc1727b7fa779cf8e8503ee39a8ccc23ca5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193d8d85b6e05603245de6270f0c13a177b5d2ed940db3462b491100058a5a8d. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZBRAD2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36793a9127f263c1937baffa36078f5ff4a3895fbfd69b99109635650c6093ed. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72300779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845469b5e0925c9724dffd2af8c62995ac79fd2eb7247aa7c9922c8037129ec6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ZAUM72300781.