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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7045934da4d01953c0d5f439caaf8ff0f4ffaf86e65d59e2dd5476dd2e5761f1. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e766f81-0392-4427-afab-b4ae2a5be95e.json and https://artists.proofprofile.net/proofs/artist/1e766f81-0392-4427-afab-b4ae2a5be95e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
C.E.F.C (feat. Nate Monoxide) [Voldex Remix]
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882da0b21f078205ae13621ac178776b552b8d639bee1704fa615e845a3308b1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GBSMU2465454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882da0b21f078205ae13621ac178776b552b8d639bee1704fa615e845a3308b1. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GBSMU2465454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d7d2e7b3780fe9f7803e89817b5b9a78d8f44ad17a38f0390cfcc66ef9dfd3. 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/GBSMU2512727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40fa681943a163d2df120e55fd145677901cc422dc146a26696e014d8688c70. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GBSMU3684319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40fa681943a163d2df120e55fd145677901cc422dc146a26696e014d8688c70. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBSMU3684319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52804ed47393869a483cd0061a363fc78ed1f71856676883fd0f7478ac573d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM42K1604032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52804ed47393869a483cd0061a363fc78ed1f71856676883fd0f7478ac573d. 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/QM42K1604032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861eb8a64c2265dc4155ff2ee4e69f8beb359b3979101799a4deaae2047c6f6c. 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/US3DF1613813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d1d812409fc8189e77c907f8af355154dc2c76148fad01dc9f3ada44c8dd5e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US3DF1615199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d1d812409fc8189e77c907f8af355154dc2c76148fad01dc9f3ada44c8dd5e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US3DF1615199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d808c18226aa589a7231b46e2992b5d1ce3cc5dc673610e5d0781442535025. 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/US3DF1619144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395458bb54ab8c85fe0f9c4b5a6de4ad0cee9db2fbdc16f2c4a60428f931b2d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM42K1608029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8761a495fa4f47c055e77558bfc53b3ea58fad6d6608e09835ef934850bc1b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM42K1611505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8761a495fa4f47c055e77558bfc53b3ea58fad6d6608e09835ef934850bc1b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM42K1611505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e699fb080d4bcf178af0ea21c23d278af133e6ad9fc6d7bb59d22810ac00de1. 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/QM42K1703925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e699fb080d4bcf178af0ea21c23d278af133e6ad9fc6d7bb59d22810ac00de1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM42K1703925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b271f72919e9a2ee791c0611de86592b419a4fdac301117214695e425aad0e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CA5KR1805765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b2c8c236b8c8ffe4babc998d603122a6c1df6f9b7fad9187c579b56317473a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM42K2040753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c4de443f360246acd52f6aebd578c6c2975e546e88237685254f432cf3d263. 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/QZNWT2222924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c4de443f360246acd52f6aebd578c6c2975e546e88237685254f432cf3d263. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWT2222924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91ad958c606c1bfe61065afc21dfc2f60538f2ee419c162a67e385143d2f33f. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/PYC842300871.