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 0x6c7a427c8ac66bcaa08dee6db323ccf06962de2693b596e0ca1a78ac3b591617. 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/0323c097-fa63-4ea3-80e9-c35f89d0c46d.json and https://artists.proofprofile.net/proofs/artist/0323c097-fa63-4ea3-80e9-c35f89d0c46d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Binding of Isaac (Boss Themes Recreated)
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 0xe9b0f33a4f23e2e6f890218d83dcaab56cbcdd5c1fa14c0fe02e91dca73e6a9f. 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/QZDA61827439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfdf86f0f56ed12df2bd742e3c747d6e9b2715329575a7f8cac46b8eac4161d. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/QZDA61827440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884b91719094407e69ba59055ea18851595fd92a5bce20d862ec017d32237862. 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/QZDA61827441.
Unrelated (Covers from Undertale and Deltarune)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09a24ae1da359a9bfdf1a117e118023a508202f88c15b3589f9bcb9d57d6110. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZES71833401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9e211dd0712bfe04cbef50a8560b9bcf2a4e3084206479989475f68fdd0854. Chain 2 (Bitcoin): anchored in block 957658 (2026-07-12T05:03:28Z), 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/QZFZ42042382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6150028fa0d6748dfbf579f3b88780334b2abd2a66ee793ef1ef0b05601beb28. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZNWU2187808.
Nice Fight. 2 (Covers from One Punch Man)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379ea17dc8d26ec0096c24defc8c18a10c7b5bcbbed2a9d1f16cdc38481d1401. 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/QZHN42111985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33869adb01641a58a7531ada0724a585baa7dd1a1985ece853bf8967bc205d6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZES92029603.
Closed Fireplace for Relaxing (Loopable)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3749b658db5c7673808529659b5a83562c58343b0ead2ce3866a5dc03ddeac28. 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/QZTB72352169.
Theme of One Punch Man (Seigi Shikkou Dai ni Geki)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdde3f7642e099272bd39335eb0097af4285e99278db040a6ed39178a615384. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTAS2501950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4463d99593146952a6d804e76843f827d78da23f761be601a20198b632482b6. 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/QZZ782572407.