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 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 0x3509d67b566f94e059e031a3158010885a25c92421b2c3e3fd213ec97bc9cd0a. 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/7502b965-41d2-4e6f-8ae0-dfc5610cd3e0.json and https://artists.proofprofile.net/proofs/artist/7502b965-41d2-4e6f-8ae0-dfc5610cd3e0.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 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 0xcef13bfb24b1f81fd04ee0a3fed01691a04eb3b2a25640903e036b270121b46a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEBE71700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4f6ef730a156b7db6515096cfd9df273407e62fd1bf713e2dee9f827c820b4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1548490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06e2f25afacf0f75cdefde87f318fabd0572f47760bbcb4611099d0c2847fa3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1548491.
Musuwo Wamambo - Sunset Edit (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495888c87991462c94ef7617718271694709d759fab5fe90b987260ec7a28b18. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/ZAH962400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2c4cb214446e09354d149debcebc2a3610f7352db38ff9079591e494553ae8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ZAH962400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a7914a943b74d70cbd32afb08982210d6db24b3109866edaf9c2f98880fcc3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ZAH961450005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb0ce97bc003cdf3ed5beada8c2a5dc34311aa3afeb51d0c5de944fb48cc27a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DECQ11202202.
Herbal 3 All Stars (Aero Manyelo Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebea31188ab7810b0d13c4e2d618866ab15f195edb9e4aedfd1b3cff3832a6a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ZAH961100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11906793d0ed98c9cf33261ed163ff7eea873566b848a92956175db4c8ab17f3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US23A1544629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c5ff62085e97581021d39f707f50442bc31ea0ad9a38d5a52cf2a6b5ad207c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZAH962400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79a9f4ab0ad5ac5241c00b8f41ca55f097271142bae2e3d103fb61591c2fa66. 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/ZAH962400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7f16f6ddafd0a80fa8ab7ba54a490552277422cdde7557f4c4db6a3c8bbab7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZAH962400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27708e25da34e73c2936544cae8b7b43e89ed2c4e12660130476f13a31c0d5cb. 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/ZAH962400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3bf81d5b4c5e22391950d1cb9a8a4dce7f77aaf5fa06b4ba9579894026ae486. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ZAH962400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a7914a943b74d70cbd32afb08982210d6db24b3109866edaf9c2f98880fcc3. 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/ZAH961450005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0a9a32e528e2c302483595ac578312b963159d9acc6c02b181581f03ad4c55. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ZAH962344801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0012a7ed7bba3a60decc36bb524dc83f0111f33757f7246989137188816d8f7f. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/ZAH962344802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826702522f5d40deff0228d6f400d5e33e452feb342b2f4e9c539712e12a66ca. 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/ZAH962344803.
By My Side - Da Africa Deep Remix Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdff8d4bf9cab0b7c2fef9bfd4cbb206c54663f589f642229a64637fa77340e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ZAH962344804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f48c40ff6adeaa822c3f5f42de974bfdc037e124373ccd89bcfd029f2ca652. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/US23A1570310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94821555517e0af8affcc7d4595e560ea6163872f07aad1796f6efb5242f593. 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/US23A1570311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e333b51644bd888d16c00d347715ce3e5da18009655993cae392e40b77f9ed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY472279104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb68c82f59ca78083809f8677084afff2a40ba423ea38e6e78b7cffe1e13173a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US23A1555427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ff66809ed9c8f237517f0bd0d87fa542c6b6314a1c9b967a7fcbe9e7a837ab. 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/DEEC33500726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237321f01458441cca6a48d7028718d87565be7b48301878b0325b51dbb21cb9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBE72000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5832fe2f82d02e320fa4b3e01de7af6001ed044d44573a3fff728a088459f3. 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/GBKQU1960088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f92fae18c1d1853f0cbd03d89c334acbc6fe1d0da0ab0e5d14cb95cdd88a6de. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU1960089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39a00def4a9368b8610d8a6520b476aa258c9ae6c203a74c1cb4d0067adc257. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBKQU1960090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07287aa8de60d5d5765b127ffbb6a7be8069a2e035da5de253f29ffb17bd792. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEBE71700826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ad58baff228a1f4ab99c624a987515d30651ee9bd3ef7675c0124fec3b2fc4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBE71700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36222d023b3698fcf8df7fc5808763c8834c9130c212abd56e3fd3ec6dc62e8b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEBE71700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9cbf7447b5ad58bd7792ee6dba3b0d617956b238b3526eca1f0a95eaba893f. 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/DEBE71700405.