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 0x2d3fc8c7da10891b7d8ed9f9cbf315257364649ba6fd89ebedf8c680c48d57de. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75134244-b987-40f0-ae4d-05cc9d832378.json and https://artists.proofprofile.net/proofs/artist/75134244-b987-40f0-ae4d-05cc9d832378.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 0x7914515c410dc4695478f71815cfe294b0bcefa81f44b31a8ebbf60689932f18. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHN92113341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cf2ece299e7b1c5ed217baada0e2dab1dce65419c0738401f733247f5c9372. 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/DEH742172808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdfa9a3c1d49565011999665100130fd693eac5b9400da5d859311c7dddc1c7. 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/US83Z2206843.
Stars, Clouds, Moon - Rialians on Earth Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804375713415738c9e3b7a637cfd69ff7f506f39310590c4632c33ce851982c1. 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/US83Z2206842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f79facfc306516e94d8b7ea5681552e6d24c9a35abdadf2b8d43c789e3c2bb. 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/US83Z2215714.
Stars, Clouds, Moon (Rialians on Earth Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804375713415738c9e3b7a637cfd69ff7f506f39310590c4632c33ce851982c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2206842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1ccf276cde0b8f774a559a53be837cfbb02fae1ebfd6fd008e98ed31f80d30. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US83Z2206844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cf2ece299e7b1c5ed217baada0e2dab1dce65419c0738401f733247f5c9372. 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/DEH742172808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f4ddbd248aade15b2c4e53057434f66c304dfcf55be043f6066f25149e3caa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEH742044849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7216ca0712e945bcb44c53907bb5e3cff599f5ce933c9bd81ba3a2ef1100366d. 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/DEH742044850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22820b271be9edd90f68c01f21a83e523d4e24fae6df931b79689c2a53cec5d. 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/DEH742044851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf293252313354ee1511e6b5b07fdfaffa928e0a68b1916892a7cb4bf0c9b21a3. 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/FR85U2000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e087cfbd559b20c9382088a98038902970e3fe2df579ce7c0461c87f7275041. 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/DEPI82305763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd8bb920f6c6352e16391e8c29172f71d0f1fb5d084f88bb59c79da3baa894. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US83Z2338728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26894b0faa2d34775731ee4d987a8781c5d7408227c94abefb9ff85ffa8f108. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USLZJ1728745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacacc332eb7fa1c4c7c341e92a0fab3828a5d1c00b8bfccf65463524eddad9ad. 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/GBJX32045499.