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 0xadec6b960a089f4cd6d7c5bede8af01b9c3ad55d022732c9e78b5f0929b12f39. 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/ac1f6e6a-09c6-4ebc-9a49-dfd6a3111fab.json and https://artists.proofprofile.net/proofs/artist/ac1f6e6a-09c6-4ebc-9a49-dfd6a3111fab.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 0x6dfd8a7eea74d281e6948a3e0a8a179245e2b92df3645eece8c9195451a48758. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US3270403279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd723545e6e6254e6be55a5ba3393e69e72f999449c355c5934eae573eff4cee. 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/US3270403282.
He Knows Just What I Need - Encore Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224dd9b9d6e581a8b8f84c2202856c8c34240ef0318868ed4be70e56082e38b4. 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/US3270403285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1a2485f21a35ff9bd335625123a184c29ebe960f5853382e2a80753316d118. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/US3270403287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fbb41d4a8c4175bb3c0dcb985942cb31e2dc1018df4a9689fcc0767b4599a4. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/US3270403288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd01aeb328c97e8adedd6479ce6e05c7b067a90e57a39755e4c9c3b71a0a63d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/US3270403289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3bd57374590aa63e6ef14402962515139db41d26f3bf579b1e93674d8f0b85. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US3270403253.
I Feel Like Shoutin' - Feelin' Fine Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f07c4325e5e2a5d74b11381b8021fd6b00669040f3149065ada9bc0d6e881c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US3270403261.
Bill & Gloria Gaither And Their Homecoming Friends
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b5a8d6eabe91f34b5d2d7682f9fea47f4b0e98472f54bd2a24563d5943c815. 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/US3270404419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf951c4aae51da8d3fe36509e49c3a1a0620d8488f17b85c1770be27ebd769b64. 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/US3270402822.