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 0x4017d750b2ceb50f968573ca0caa28c946a1f698eac97dc5df9715294e52824c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ff49e5b-2d96-4aad-8d6f-cbd8e2728a9d.json and https://artists.proofprofile.net/proofs/artist/8ff49e5b-2d96-4aad-8d6f-cbd8e2728a9d.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 0x1384148856d593b97d09118347bfe79e5bf45309760300836dca8d0cc01e9924. 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/USA2P2461274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfc6fa559e2e1e6d374c08018d36fdf360070aac3b17dd9edfd54d85d78de73. 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/QZPEW2000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf935769b7802606d076e6e23559f66ec5f6fd9a99fab61ec9779e301a10bf3b5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP52531484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85477eca61ec0961c0640e4c504e92fe02480527f6900a28bc5e708cfee5b3b7. 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/TLREW2221704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85477eca61ec0961c0640e4c504e92fe02480527f6900a28bc5e708cfee5b3b7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TLREW2221704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2459c4259f118ee03a33f002c36bd4aefd65b7097360d6760d8450d175343c07. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZHN52095259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7536f2fd22bbb18483037fbbcbea5cf46b7e37866f65b1ef7d09e5177569dd4e. 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/USA2P2449920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da25ba68b5383c58648c1b08e6a1ca441588e17db035f199f32f8a7f99b9497. 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/QZWFH2330520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc052f4f0c5b5e2feba5327f9f6b00a03135689348030b9508d80112ca47c1dd5. 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/QZK6N2267360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bedccafb9aa983422f8e883b0286892342908b48b182d514c1fb2b64115737. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX282283757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1999eafeef015572b7ef290a2716c27d695834c719e6fcdc367f41839832de. 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/TLREW2234827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7279000ec81553ccc1269ce41ec5e93fa774df95290b8baae0e0a488223f7c72. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6Q2357326.
Throw Away Your Mask - King Side (from "Persona 5: The Royal") - Metal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8626e8eecf07b45477941b91c71a1e0ec70f4b996bd31df34cc5ac0bd476f0. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZ6K42100152.
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
The Poem for Everyone's Souls - King Side (from "Persona 5") - Metal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a42c6c34946723ef5a62a81c6b571bbd9669ac188930887812e47661afccf5. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZ6K42100146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c2032854c6973baba8a56665df6078be1f120e1a5a2ac35663a862e64ff09c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/UST8K1688498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f6bf605d5326b39fe4538525cc4773edeb7927f330f95741672bef4b642e7e. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/QZFYX2084570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b6776f59f6a04fca857e822172f21896f70eb8c753b62d93107f7b74c37132. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZFYX2084571.