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 0x4d454fb455c8005e1e59406b2f93e1709016394286ff8c774c42dca5320f6ee0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/47c889ca-0c8a-47a0-8031-9fb7be43da90.json and https://artists.proofprofile.net/proofs/artist/47c889ca-0c8a-47a0-8031-9fb7be43da90.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 0xf9842c018e1829a5e56f4c01c111f95fbbdead7cdbd575b9f9bb24938fac23f1. 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/DEZC62454090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e3c0883719d48b48e4cd4b2fe8282871c50bc4fe901b49099c16b99e909d56. 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/DEZC62459424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4bbd21aec131775c9e216680700d41f81454907316abad2c551813cc070f12. 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/DEZC62459425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450a0fc0ce3185997020c4997c417d0ac7f9a17a76f37245b9bb349b3ca29dbe. 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/DEZC62459426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bd7362e94d14d4c6329e9b7c447578a9ca3feb34814a4f0f07012ab0287f32. 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/DEZC62459427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404e9dfca8ea6759cd045386a99c20d351c15546acdc42673e6aec5cad611bcc. 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/DEZC62459428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0681777427a89d187b607b1b753f6284ba21c158985ed936cf5f7798e6982. 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/DEZC62459429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771b56f8a0907d7fe284e0b6b64c1c863877711b571b8c8fcafcfcd5ecfe338d. 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/DEZC62459430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66219fe85ef6f1dff9ee0306c3d4050f2f9f8124878b4f3a7bf8472900d27b38. 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/DEZC62459431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d94944d820fe3af0919a19ba1650995ea7479a908f5d2a2cc721f3c1d9e4d3. 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/DEZC62459432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d4b53463c4c35246969eaaac1b706e64fc28196f6e519aa0295861789ab43a. 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/DEZC62459433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98964a14fbdcc201babdfe892bf49af6821fe0d2a94cab27ac1cfc3f745c1de5. 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/DEZC62459173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9842c018e1829a5e56f4c01c111f95fbbdead7cdbd575b9f9bb24938fac23f1. 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/DEZC62454090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26394c9108b5f6103211667504ed8331084543b72358082fc67bfb210fbaf929. 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/DEZC62459435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2324ce967f99cad083b64833d465670a69c772872dad7468d2a33d94b0370c. 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/DEZC62459436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec58e3afa51bb3f9adf73ca32a37356603f387433c4b4f904cab294951e7cd46. 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/DEZC62459437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebb7961139e67a6096c189af0ebdcf356b05ecaf77706eb75671bbde42e2fe1. 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/DEZC62459438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18687b5b037ca97988726bcf73d48d66c783c24482ddb1cf16439e184f149a74. 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/DEZC62459439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43ff499ca12282705591d1f1add8af8fe3a35b9278502bdbcde196ab22eecb3. 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/DEUM71101247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a316681ed9076adc9b4791f801017ed61170341ed1f52bec414339a39a74e90. 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/DEUM71101252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda448f514f36489df8b68443c8ee1b36ddf3e9d811b4a65dd342532d0fa0b880. 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/DEUM71101258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1061a4530b7fee68b649d24c8672c2402e9c76f4c7026b71c3b037377e70330. 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/DEUM70706336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290c028faf4827fc00d2a85bdc382b5b1490acfca72a8e943b501a1845b4397f. 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/DEZC62382856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290c028faf4827fc00d2a85bdc382b5b1490acfca72a8e943b501a1845b4397f. 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/DEZC62382856.