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 0x0721e06e515356ea684f083f4cf2caca9d49bc07bd5cf1cec3f5b0849c16a1a3. 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/0a73e1d1-9582-443e-a742-e21410e07698.json and https://artists.proofprofile.net/proofs/artist/0a73e1d1-9582-443e-a742-e21410e07698.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beats to Relax on the Cruise to (One Piece Lofi)
Your Battle is My Battle (Jujutsu Kaisen Lofi)
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 0x7d8d657f9f767995e7217b68a92feafc6c875dde5636579113aa886a8b584573. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZMEP2106815.
Jonathan (Jojo's Bizarre Adventure Lofi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2d95abf86cc8dcb47b47c29fcc16dd38e22e313e98bf1c299470719a19e72b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZNWS2178102.
Bloody Stream (Jojo's Bizarre Adventure Lofi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e11e73210f5434961101f958beb574ccab1d67f1d0a74e945eca0b4c9fde17. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNWU2123490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7c6dbeb51cf35bb33b870b0111e46275c52d45bd012d0ce04e6173f45f8ade. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWV2101214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a83cb109bd5ab0e4d8bf18cd72d7a9c08fe52d4390e91466f468fd219d86a0. 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/QZPJ32153577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b0198b2381d9120fe3cd021d78d6f87ca0a4652ae6e3ab7a867d2b9a1c53cc. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZPJ32175492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016692aaca661c1bee57e24df5a929a889fd6bdd22434cca98bef9bef05fa76a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZPJ32168183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef20b71d7e772d26c9dacb9862f47f8cf552233220d2a19b5395320b9d3fe1be. 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/QZPJ32200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e8cb2278807ffaf374a5d579d6a3f76536279c60e6c5866fa15df465deef3b. 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/QZTAW2221797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20417fe2dd1d4def064f04b1d4e198bf0ee2782ec0ac43cd5bff711c0d57ce74. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPJ32217174.
I'm Becoming the Pirate King (One Piece Lofi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fe27081c0b9b7227f50fda6ab22d57c1eaa60ed241ff2512b9fad0e9ff76f7. 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/QZPJ32275538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8872e2c5766dc6b83da0d71c333707ac7b74b4aa48abc89b235c5ad6103eaa8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZPJ32282315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5d27dc79dc7870ecbea973d9f02941ebfcecd14d32ee46da725967bd403e1d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPJ32297239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350386df2728bbd4d677fd12645ac4eab9a7ac34a9a470b0064d22fee08d7ec0. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZPJ32334372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2337c321db3fefb0c9dbc9c9b019e62ae067ee40407568e6ea73f6e8dfa5ff. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZPJ32344594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b41dbaf7838c2671ec86f177be0d82a6119135b659118560a508e37d504f25. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZPJ32336410.