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 0x769af1febf79972d5d539edb57eca031cdde41c248d9d6495fdcd301e676c322. 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/9fe8ea3d-56e6-4722-a09b-c3d970d9ba58.json and https://artists.proofprofile.net/proofs/artist/9fe8ea3d-56e6-4722-a09b-c3d970d9ba58.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 0x6de24845aad396802212952b7eb3a122328945bc131e4ea9575e75b21fc7ba6f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCJY2300515.
Rocket League: Sideswipe (Original Soundtrack), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98046000f66e9dfccd934d891b52f372f9630408a67c6b0385808e0bca9da591. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CA6D22100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de24845aad396802212952b7eb3a122328945bc131e4ea9575e75b21fc7ba6f. 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/GBCJY2300515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba097c77860330ac6d562a9652a9ac2a96329bd58013e796e7964e9a146e8023. 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/NLCK41084460.
Final View From The Rooftops - Justin Hawkes Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5e5853fa72730b984bacf37d7cef0165484629abc4de39c7091c01d966606. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCJY2100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a488df0b5f68d77a7bc6375f015b6e60745839d9fcad856d2fcf4e74b3956e2. 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/GBCJY1600346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35f6efb6ff65637e44f2d80a66474b442bda3c3780203394cc77113c4dbc7fe. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCJY1700117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba097c77860330ac6d562a9652a9ac2a96329bd58013e796e7964e9a146e8023. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCK41084460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871ddac728abfd2b90cadab353c84618057b095d55830cbc9b5b246d74dea457. 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/CA6D22200051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb9b86be72a6632f232f3c8d2741e6066b8eaa03534a8c6b2aca82605d186e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCK41046414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fb9b86be72a6632f232f3c8d2741e6066b8eaa03534a8c6b2aca82605d186e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLCK41046414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b6c3e090043e570bd3834bebc8d48c19315408c46299d2767e7bc247dbff73. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCK41054211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761eb83e54cf7bd1d99d7913589a5cd23ee99bc7207cf5ccbf9732a51c36a2c8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/NLCK41037707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d7c5697f43d682547243d44f922d6cfc9209635992ffb4d3a5ff4bdde23727. 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/GB2LD2110151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf068e6b537a805dbf03e1b589948c8d9df32f85be6289cbdea9cf4102005ab50. 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/GB2LD2210309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98046000f66e9dfccd934d891b52f372f9630408a67c6b0385808e0bca9da591. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CA6D22100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d719f7eef695784c434d3dabd217387c4cf338e242f5aacfdb6c9e9afa89ec5. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/CA6D21700257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0928c75bc6cf9fc3a09381b86202dab618a86d10ada8c7df8d92943f8ef6a66. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBTMZ2401228.