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 0x66562f057fa59534822919a9c42d3031b09ac9304776b717bd00fc7776c0ce37. 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/e8337dc3-48fc-431c-b655-15e68faf02c1.json and https://artists.proofprofile.net/proofs/artist/e8337dc3-48fc-431c-b655-15e68faf02c1.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 0x3bb784ba80f0537f5c653266643e0666403e7594208701c7a06dc793e40e8527. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZPLR2152322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e787ed36aa293b2ec0aa1884fec054e63b4d260cc72fb171347af825d2715e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAGW2354120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x341996397b6f58f4b442c5313c749c291a512bfa18a63e3f2cf8db18eb87b0c5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:22:47Z), 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/TCAGW2354169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543e9974202742a9dfa2dc05f17a646e7a588d488c8611a19992a6ee0bf28b85. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAGW2354187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9934ab6f61a80b069aacabc1967cb2e3a8e7a2f004785762e22312500aeb5d51. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAGW2354268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4173a3df636dadb8c215b77e1d8888bc208c76b00b21534511a4b6f640b25e29. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAHL2303117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x867aac57af85aff5dc4477087f9542e42879f4aa0dc4b50c4b3b5c9f5d4fa375. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:38Z), 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/TCAHL2303124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80675f5ecd3b3e264dae462911aa4e2a6067f8044e8edbafdc82a7b651d09a6e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:59:57Z), 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/TCAHL2303134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9918078bbf436742bf68e0c305f8ea77485217c561a4a177d3c966b01aa147b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:01Z), 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/TCAHL2303138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db49de09db58b90e9687cfd650c4bca2acd04418a905ba30a92da719f07e560. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHL2303143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a587b3513f8987ee7a09817055861fab113ffe26106ad8f3cb23053957265c. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:28:46Z), 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/TCAHL2303148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec165e725ab25f46ecff427f0ce836a469c7209f1f207ef10a2445da5dddfce. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/TCAIJ2431404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d6af38b5435adf51abfb2c11b475a2c1f301f9e3983622bc1648347497947. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAIK2431414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d67fdeb34c3e5b67808ae3f2f24177eb1016267e948f68eb3fdad3026208cf1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAIJ2431442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb32c23a31e0e56ecfe250480b7b3d2cf92c6fb3d798e89b3d87757cc4028a6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAIK2431458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e0f33a4eaf580f29781de8baa68c2deb44098e8f792df7aa6ebe7ee6db2779. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:34Z), 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/TCAIK2431560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4068ff620fc3d2f0c9a9c94973f67d8b8ed25319f22c6956b4216a4037a019a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:52:45Z), 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/TCAJE2502943.