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 0x9546a3f369b6a3e736da97474c871fd77d4b01ad1aaaea4a2113e37f9247ef38. 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/faec799d-c6b2-4784-bc10-768e98db9953.json and https://artists.proofprofile.net/proofs/artist/faec799d-c6b2-4784-bc10-768e98db9953.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 0x0616c4f5ae4ef29f1e5e4a22965aa6f02a2bddc84013c7fe5abd2223939b663f. 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/FRS182137182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92898da84da61d22228a94b468fc144bb372b4860f00bef0b3e7592f79ccf089. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FRS182137189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8593dfe0b5a283cabeb04c0bf824edde4817a3398c39477847fc7b5b718e9154. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRS182137191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dea41427ed702b6bc204f312255eb584f272ad4166b3ecef9d751b099d0c5b. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/FRS182137108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d1363287b78b1357b63fd8c6e6ecbda12e9c5c605c5dc46d87b86949f22172. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/FR10S2221858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38b25324aaf82c739a9b744f3b0542755c81deaf4c083a45be880789ab51b74. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR10S2221874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80400a4441eed5c2cd4e75eb750540bd971957c64950f7a6306ddf49a49ddf44. 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/FR10S2221884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80338bced77bce94315e3178663b3900e1415290129e1c591b8d7b5ab62fa65f. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/FRS182137213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266528e82c478ea3a3629648175e322d7ac3142b84b6b3600042eb854675a9a8. 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/FRS182137215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ddd54b55b0a03a6ee30afc3e815f9b3702e49a0b84388000f26f7417c0ab46. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/FR10S2221850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc625078e74874fece1f9266873e7d9a44dfb323159fef087642476831120dfe0. 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/FR10S2221851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad1271de0a1be01631eb9977ba31a826bdf55adff35de0474862b2535dd24be. 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/FRS182137126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189389be72effa03c32725f9c49b1b184e7baa3cf894e19e7e9db5713791af3f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:30Z), 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/FRS182137138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9412ac89f2a6cc56af529d765b5747afc0a24fac4fa46a5dbc0563ab8a78f18. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:34:38Z), 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/FRS182137139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0b94ca3d3cd22c1e60093236b7162dcf5269b6b0ae2f9aabfea661d5a0f6cd. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FR2X42388170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5275a9f1e1e61e3afb9e5b462e73aeff6f334ca450ec131ce86d29e3a37fff. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR2X42388470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa50044dfdedf1a9ad5666d1a68822a8a47de7fdbe6cc51918f96d39dd8c5c8b3. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/FR2X42388478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bebd57606470faf41ef49cda8694d9fbd8438575e50ba70ed1f8593eadbbeaf. 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/DGA052350660.