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 0x49fcaeeec0e42a5dd4e855296119269cc506f5d4c1f46c512496237d6d63aba1. 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/d8912c2f-b8b5-4185-9acb-34a76ecde940.json and https://artists.proofprofile.net/proofs/artist/d8912c2f-b8b5-4185-9acb-34a76ecde940.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0625c64528bcdd78cb9c39e6c54d86ef5f5bf4aab52fe63464a3f5f8a273919. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPSR08529340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dcee4a59b26d3f828366a8bc8d198aafa43c0162e9eab12612fa45fc174f43. 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/JPSR08608040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9613c276e29157de8e409d66aecafce888e0d2d0f8479ba812f5c07215b9aa05. 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/JPSR08615140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982c9cae78e53c3facfe71a5fd7a0b9c81c402d28e49b1a909e8639d353a728a. 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/JPSR08626080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dc7f80ae751247539cf1101b31a03959766bcd9257c0180679bef65bf1a8cc. 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/JPSR08626090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56c790f2afdcd9cc2d566c3ddc3f7ea59b3179addcfe77af16c22a0f0a879ea. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/JPSR08708640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774836815fb9223b5580780e88917d1ee8659dd745fc5e8dcac97d0a12a7a2c5. 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/JPSR08804220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0625c64528bcdd78cb9c39e6c54d86ef5f5bf4aab52fe63464a3f5f8a273919. 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/JPSR08529340.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0625c64528bcdd78cb9c39e6c54d86ef5f5bf4aab52fe63464a3f5f8a273919. 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/JPSR08529340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dcee4a59b26d3f828366a8bc8d198aafa43c0162e9eab12612fa45fc174f43. 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/JPSR08608040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982c9cae78e53c3facfe71a5fd7a0b9c81c402d28e49b1a909e8639d353a728a. 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/JPSR08626080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76fb12b0368a411ebcb10d15d52d89320285797783d34a23410c2f7f4704164. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPP400701361.