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 0x66074b5b6fda61dec085ad8e8d8e3a1f2f911fbc0b6a56038fa4b3a3dd1ddc93. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61cb120e-7a76-4b86-8794-1a9c5b75851c.json and https://artists.proofprofile.net/proofs/artist/61cb120e-7a76-4b86-8794-1a9c5b75851c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
They say I'm underrated, but not for long (Collection)
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 0xcd5de84ebfb7647366bc9af60eed16dd5e921205bce595a8be75e67e896608e4. 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/QZ93L2121808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19accf9fe9cd8b2b9d3a701b8b710d84f3a9fabc33a320cecef29bbfb2d19f80. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZ93L2131794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5630e2b33d6f93a3efa7ab5cc327bb3f307247bf30cad85e824fe6bbe3986a9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKPL2207075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3e022ea271067bcc7e2ed1830b256527cfd2d0f57eba10aaaae77eb9675ad8. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GBKPL2215127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0ea657f553c16c6684d0bc2ec2af474d40e7d8ddd41a75350741845b89dc1b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/GBKPL2211630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381efd7873d15ca9c058f7b3c48f9c17ff4ada06482d632e8de2756fe5dd5ac7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPEW2409493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b57329e37e52783865859e2ec36132594a405902c09bf7cb639826d436d9d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/QZPEW2429951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38899d1015f8e9d76efff56333a7938bc0c679a389727ac59638e4e5d940e7f. 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/TLVEM2457274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf5124f130911bfac1b179acf322c9329ae51f17d30c25b2ed21201d03a0933. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QT2VB2406570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c9843370b8a685625cea37b9f72512a68b08cd9871331037ba9abc7b9cf1a9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZVEM1808595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd51a6bf2f805320355ede145dd25d644c44b5246e7fb592e671479104fbd953. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QT4K32509644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783090ce4b12f386c9a15e0b949a2ffa28128a12c784d4baa8db6d7e6fa8ac55. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QT4K52510167.