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 0xca520d944ee85b9587485717b76a953a7010b4600a8b53995e96eb45f1729488. 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/568227e0-7ff5-4d1f-b1ac-1a68cb4ab1d4.json and https://artists.proofprofile.net/proofs/artist/568227e0-7ff5-4d1f-b1ac-1a68cb4ab1d4.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 0x32eceee433a19c7fa8b23bfb90e36948de4a63fa061fa8aaa975748a918bbd65. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZFYX2079080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fa338be9183c83331ca319445d858c06a82a4af089cf51dedcf4ca553342a8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZFYX2079086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf331da53be828a84a686fa2dada195d8e6c545580789643f369b524284ada53c. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM4TW2177624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9e3a8dfb24f1975ad9f497ada88f3b90a3866074841c4b9d9f69fdebf1d05. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QM4TW2177625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38038d5b4d22b7a349c3015756fa7d47f8dadfd3aaa2c9bc91bbf76b94a4c08d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM4TW2177627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c497555313bad348b85c576319324313c5037bd32024b811a94f246b17ca4b. 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/QM4TW2177628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2991fca53e2c5c810a636739539a021003a303151f0a5db3043aaf5603920d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM4TW2177629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff977d1f89b444fdd5ebd5346a45fecce7d1ca95bfdde7d0e4f623758a6af7da. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QM4TW2177630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac3669c9c30245357f148a6a9fda259370f80b853eacd8034213072574ae090. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM6MZ2315795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c57ee6d0261fc74351626b9ef1e54dc729c487eb8145df021ab182cb332b3bb. 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/QM6MZ2315796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ab9b63b3cd533f31da663e4c3ea9f45cb0fbbed0c5dde5f57bdc09793d0662. 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/QM6MZ2315802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d52ff0528e786a7d800c8d02aae4a6aa92cd101950e0f60bee78493261ea08. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QM6MZ2315805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac997b5b0aa859e6cb587f1b866ab3d029c478c5cd74e7e39b2296aa3d0a6d55. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TW2472090.
Crystalline - Johnny Dynamite and the Bloodsuckers Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3bf751e7cc0da1a73e1acdf4306ec11c8dca04ba3167c3860a6959ffa19ecc. 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/QZTBE2365340.