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 0x0bdd695040fa0b7336cdae12b8f40a595c6d95b95279a9542a353e59df532472. 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/331c7319-f6b3-4622-9630-542d12549a77.json and https://artists.proofprofile.net/proofs/artist/331c7319-f6b3-4622-9630-542d12549a77.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 0x8a5242e0eddc360069c578335c3fe471036cf7002b6d4989124159747327a95d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR6V80880223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb5b5f116dddc8e4fbaa9c93f76cd5321b253d1077737104c92193648976be0. 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/FR6V80880224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7014b44ff2ac29c9c06616a8513c83ca19ca299a208358c07f01704cf53c2f7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR6V80880229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb52296b3f4d5e83751488b26c351464d4fbd14845fea2b745f30aa88d56bbe5. 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/FR6V80880230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd072b8898bf0a3f0d38f9123107d8db1112e741300dee6fce7f1d64807abdc6a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR10S1637233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4ee93461fecd166f180f78757633c822bdd5425bb3012775543aa2a0459244. 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/FR10S1637235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16612689c7840460a51621aa3a3144353ebc09b5ce4f91181c2a7f9aabc508c2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:20:06Z), 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/FR10S1637236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65bd2910ac970533852f22a1a608ffee17d1548ebb53a2a529f5da384bfbcdf. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/FR10S1641011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f553157eefdf234887777d103e64fdffbc6bc6a98f5871ffb1426ea2cb0a70. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:50Z), 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/FR10S1641014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910b8456ebc402031937f59fda7a832a97f040a130f10be214c25a92bfa50ade. 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/FR10S1641015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde347c049966c337e8ac4de5279b3e3cd0e1b023417106064fdf8154c5e2997. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR10S1641019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d54209dc4afa961f5649e4f9f8a7e5945ac7dcf9f5efc7c7abb76a8eb49b7f5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:50:00Z), 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/FR10S1641024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8ff67a106fc3647893ee26b19a2b3c5d5dffb02bd44a30166b940ed1a84988. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:09Z), 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/FR10S1917242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594cb2d4fb8832e44bbff26f564c6641e1f3c95561514b6aa48a0abf16240df1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/FR10S1917245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f6c95f577c0e870d241d97a4df6d66ae3898343a0a09a3edba742e479f7096. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR10S1917246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187807e6a09c922e0416b5b5ea7a812a6378b60d7bb61d370c3950ed581ccf10. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S1917247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713e576b872f80b5b513fbeedc4fc537035f919303e88157fc860352559d540c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/FR10S1917250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd906cf496f7b12ee31e2bf74fb437623220b2afb336c2efaf02bb0dab9912f4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S1917253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b051bddc78a231915c254f5b8f2039054211d88372d085196dccd08223e6c2b. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR10S1917254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8c7dc0bb87e5586cc9e87ae7d7fb3cd68854ec8248153e51940b0e96907d8c. 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/FR10S1917255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f739b75a56ec869f94d79db1eee1938e85cfbcbe3182972dc228b55786590. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:35:46Z), 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/FR10S1917256.