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 0x6c68efce292cda8664066208fb857fa8a03bcd3673b6ef104b00f217a681888c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b67c07de-52c0-4a02-bf9e-117aadfeff5f.json and https://artists.proofprofile.net/proofs/artist/b67c07de-52c0-4a02-bf9e-117aadfeff5f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beauty and the Beast (Original Musical Instrumental)
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 0xd0a83db9e35feba494c45b6ce059d00fed4c0776b31dd6b74e0e3f1ca4092ad8. 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/US3GD4512484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf8a22cc7ffc0d5d341b4789129b696a98c94f74bc02b521463c1254cc5266e3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3GD4512486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe585dacd4744cb6893fb2283c4cde875112cf53ebfbd502382d7fb84d2b05684. 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/US3GD4512487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf4a72591c8abac488854a97e01b84997e3898ef5b0683f8a8266fa42d7a388. 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/US3GD4512489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43611992636c230568ebef2c289130872522c69708d0fa0306befd7740b014de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3GD4512490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec98b9ee1c8d39d3bb13f9b0eb5563c27f294c048e304898e93e94d927ccb3e. 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/US3GD4512492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c1a450fdd2b39cef433ccb1cce2226440e970edc4d02156408ded4a3425b9b. 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/US3GD4512494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec2a89a3f500a82986752750dae68a5de98b030867b00c710b12cbd6983f9d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3GD4512496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99d3e537a38caf7498741565c448b769d65eb6a620ba067acc0798cdea5e4d7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3GD4512500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6fb6a066be0d16fdcf6d43ba64e45fa065ef77a8c1e5e03847535cd4b85810. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US3GD4512485.
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 0xc93ec31c44f14817e7f4e57fac995254e0680176a332a05dee979242bc88e176. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/US3GD4512488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b4f27e8261b63b1e812b94af6112dba02c257e8665d85b46ccc09e05ff8d53. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/US3GD4512493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f38130c01a166958b7cc95db6a80fa1c92b934074a52d93e9b7fbb6c673a59. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US3GD4512495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38ea7d7b8bc780274f770bb0c0af3eb4da17c0bec0ece63e45651499dd28924. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US3GD4512497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32db7e6cdd9c72a2a01b859cd5a7c22db03e10109eb43917d63841734368f440. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/US3GD4512498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbc801a033e4612bd86053a6bc94fc478dfcbd80185d713520bacdffb098cc6. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/US3GD4512499.