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 0xb9a5f8add372989d01e8d34429934642187e81a531c5ab97c76458de45dfa809. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52936be8-2aa8-4ed4-ade0-a2d8a6f833fe.json and https://artists.proofprofile.net/proofs/artist/52936be8-2aa8-4ed4-ade0-a2d8a6f833fe.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 0xf1dc5ea2cd75108ef1770336eb9bed4d01f67ca2c427b99d73c33ee4c3da5cb5. 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/QZ4JJ1717816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eac554847ea0d5b7a8cb4828844ef7ede81a8bf6eb9635671fb51d2a5b87d7a. 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/QZNWZ2463281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a049b9930d890ef64fdd27bd826d1730de735dfaa197d540b87bc9e370abdc7. 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/QZK6F2491757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc02de875d0df30c4e1a893a67609658e5a3547c471c3eb20fd10cac1a92b8d8. 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/QZK6N2409432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc040a5dbe30e4b5158c85fe6b1161a41c11c098cc7ea239aff6d6c20d338f754. 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/QZWFF2375188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f4622b130b4c2635290bf1d3a782a328f4ec2f35291215cf96f8fc963531cb. 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/QZWFF2305236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53458c657b8ffea3a4a062c2800ab4150f678be6ed25bba265917f33ef2ceb. 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/QZES92156188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1287aecb06dbfddacc797769dd6320366dc4fde3d19992155fe2cb83184a1e52. 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/QZFYY2176158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182447b81ed69cb522da7a221a64325c5ea3ad397cf34c5e43a315ea859d81db. 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/QZK6J2031755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d91e821de9c367aa2aa0fe66bcc898aa3862e7aac83154fe07b702afcca56. 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/QZFZ22054715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12b6c7fd1cce3d12b2419671add5c4b66faaa51de944eb49363fcfb8979d031. 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/QZFZ22054716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796d8c5f08c4623a0e9a6cec98060d55d6f054293f9b3b7b61b363842d8122de. 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/QZFZ22054717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe9aa65948f160108852531db01c9f335406c9601086eb3cfaa0b84c85dfefc. 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/QZFZ22054718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e2895d2a4e7f7ff59064a9217e199e1b32d4220d024b8b5c2d039127cacb92. 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/QZB4J1897834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072e92caa9003199fdd0db8a3aed2fc44aef4ff8ad0e7c50815c889c98afdce3. 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/QZBRF1830625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd88946688a43aa58ea17b6c5bf86f77af0e6eb2c731f20b3a0f2d607f0a4f3c. 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/QZANL1757444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce38335b5f2c7ca5604254f0095bd33c74e3dc26128f5ff6329fdc24262fa25. 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/QZANL1740071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887b28b255e8b8fc73ae7bc31ef898fb42c033ec02fac0bd7e52b2a9b1bc6cac. 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/QZANL1718589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa89e851a2e578d133e7d0e793e9948ccf892ff948212b63e248878c6a315ed. 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/QM4DW1526291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2150e4a17614b4effd6c6289226192c040dc23ffc1dc68b2a8ad2f2d223f5f9. 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/TCACF1533138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cdcbfb6463b45f2c34c1fa960b44a8e9cde48f3aaddc6ad00579e9fb92556a. 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/TCACF1533145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2633d82a47752f3d12df98ffc490f5fcd4b0dbdcd60ae5dec20e22e11603ea1c. 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/TCACF1533147.