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 0x141b0dfd461958b791a56598cdfee5db28ce3487aa8349f2a67a0a8c0fff115f. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d29a653-8a9f-4930-ad47-e11cc29a253f.json and https://artists.proofprofile.net/proofs/artist/8d29a653-8a9f-4930-ad47-e11cc29a253f.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 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 0x8ef83e3abcd1722ccb4328776249455d4c0cafecc56d47f70bf7cbb4ea5e693c. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/AUNV01301355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e2fa8d7ce1720007f759be4042b5b92a6e6c6c2d8906e78cc0e7b787b4caf6. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/AUNV01301357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4d0866cce69bee73a590dbe7a50e6e038ccb9bbc32964a3d76c8a25b5e3dfd. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QMH581304401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064608fc165b811a1ba39e84a0564c397fa7fedb7f54d1b539422ccb0dfa802e. 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/QMH581304404.
House & Disco Tributes (Black Mighty Wax presents Danceable Remakes of Popular Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75d511afa2562c652d5257875821d451cd0ad971a5571defddd8a7ff1fe5279. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEY472177562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db621e8ce5b4f8f978b23adc6ac1443c0fbc2ad671d842cc6330c10b60e204. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DEY472177561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7a64b692b35a62b21be538d19fda0e53cf7f0f43a03c34f3161ff3bcc8502f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY470942398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1a2509b2c7ea15cf00568671177f6f42be50947ae5cf773ef02326c9da3691. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEY470936680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacc7f32fafabe67525168fb05e88dfc9f76ff68d64f127e0efe84ca44360702. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEY470936679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd484b74167cc2577523548a2c9a9daa605448bab02e67ba45675f85fc8d83b3. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEY470936678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79863fc30e794f2e19512223bbb7c952f3434f878e178c02c85ec1eb34fb25cc. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEY470936676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab90cf5bf83b3a8d95126569607f23c259c276e614e5281efe32f70de51a308. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEY470936675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b6526dad60ecbcaec78369f63cdb3f53ffd97a927f3db3276faf389a6629b1. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ITI022200308.
Act Like You Know - Sounds of Soul Retouch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4b4a872f8123ad90add1b9847d0e99ecdb04b7a76fdf4d0d0551764bd8f7bb. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ITI022200309.
Girls Love House - House Collection, Vol. 27