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 0x4e9ea7b276bb3d1fc74d0a739dd54752d9e8c5205aa31a13f902026b29bb4466. 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/d6290214-7150-4c35-80a5-154835dc694e.json and https://artists.proofprofile.net/proofs/artist/d6290214-7150-4c35-80a5-154835dc694e.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 0x563f6a542565ebcd6bf8186c0dcaf8248d9224785b8b6f946fba0dbeed071903. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QZHNB1941052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf3aedd7e21f2a8e82fc5c246ff1db743e5986fb66a03d60848cc4b352e8190. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:54:24Z), 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/QZFZ52018480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ada5e0789bfde668d1840525d103b6438896bc5974531f9e8399322fa18e40. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:09:31Z), 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/QZES92066335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0a73534afcc1bb22141d88c4e886f5812aaab2ea1dbb617129bfb84319900b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWT2046345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a20ea621101b7560f86122b3e3376bba8059688d4d740023b8e985d9971fd. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNWT2046346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe36e033baf7fe092b25cbc3b72c8ae0556c7bd199479a8d51c8568ba4f12af. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:47:33Z), 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/QZNWT2046351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcef5400ee6a5ef2d2b5176a44cef4731d6a77a5d7fa00087f7eb4abc7e6de8c. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZFYW2135551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8babb80ca3a4450ed9cf4ab8a384945c41c471c5bab5e0ec9bbd11efd4315cb7. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T10:17:57Z), 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/QZHN82144016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc856d641b58e98cb46a89d10dd0e85732d4f253a7b1bddd5c9c693427b13214. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:06:52Z), 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/QZDA42244126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ed53db1f8f919f823d8231dbb5e8a60208217e06ef4968439c6ba6c8b83c37. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:02:12Z), 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/QZHN62262787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51651342671b86737c96515ef1020a97f2dd802fe86241c8bb7a9217506ac08. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN62262789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e01eca52b21d7f21eb6551cd9d0dd00bf99a9c2e9e2ef29e8f6259abfa63113. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHN62262790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c83ac1f5a34881cfde39cda4580ff5acbbbbf913ad63d12f939cacb65b6d7bb. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZHN62262793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68cb2b72707b60492abb452a15c08fce2e3b655bbc6239e2c65817d3183ddda. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN62262796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210662cc01f95aa6825da84f6bc90a3e37108d96dff7483204f012f4d7ab4af6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6P2293134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32c8862875340a630166c35b0fc53ad9aa53e0cd9e5a8692aad72fd053383e8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTBA2221813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8528b2b4d09551b4ff1dec8e7bcdf1bc34354f156846ed3586baecedb6b65b40. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZHN52331778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de394e409f67682256099123d823addd2cce6a08313aaaf510158e6845c6008. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:33:17Z), 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/QZHN52338203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb11993dac27d8b473450be2f7d565d7e77d7b4a273552f5863b37aae367e002. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52338206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5efae44a100c297c624b6d10f5beb43a9391eded8a737f1e7b41ffb441c4181. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:00:19Z), 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/QZHN52338208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340920116f4b4188b84755443f0711b46afc9e90c853dcbb08c58f93c7304ea7. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZTRX2320418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ee55b15aa80994ea951bc88e86ae603ce9203517f88a2ad27815f055888d55. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:09:53Z), 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/QZTRX2320419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa173a2b1f7598283a988b777eb40fcb858249c2159db62ba3e4a51458baca0e6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZEC2322434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972832bc5cdc3f06f3d65edde506d740a295ec45176c011e1b10d6f965c4d06. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:36:41Z), 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/QZZEC2322973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f6355478821300ce026d0db68eeb4e3ac7b5f17882ac5f576da98a058aa0ba. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/GBWUL2350505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222b7c8fe792430c8ad0a6bfd1140975768c945412da16dc6eba8a002134828c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZTRX2421357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d3423e49d9bbf1f6f6b9cd005b8368dfd35ff7eec6f2040c79ca48ce17ba56. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTRX2421361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f798feb2b8a7001e8c1b50b8f2b37053922a05b3bdbe6875b69df9ac1541111. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:24:23Z), 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/QZTRX2421434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a49a143cc0d8dbbc8b15030f040c04c8f08c9cf7acd58dd4ad46e15de667f8e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTRX2421451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d85128bbc871fe500a854b196700a46b444c8b030d86651d4a9d30f75eae6ac. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTRX2421452.