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 0x93dc5d9ac706e94ca19ddee08603d41a00492e53440e6a296470e1e1c78819e4. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5117f36e-6483-424d-902e-b86b5a1661bd.json and https://artists.proofprofile.net/proofs/artist/5117f36e-6483-424d-902e-b86b5a1661bd.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 0x670f2e6b7664abbbdc30d404a1114455e0f3423df2d5b98e3456dec023de93a4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/JPS801852042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8661cc124a33933f85877dd1591ad6daa59990283ddc9eb584862f8023cff146. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/JPS801852044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594779ee9daa46a1c230899115ce485ada1ca57996695c47c6f787f230b70b35. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPS801852045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cac75c6c83375b53fd98e0548c38631ce0f0a4a953e3e1e73b56877f4d2390. 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/JPA962080372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7ca3fe0bd9ff803a0741336be417d60416bc8512a861ac843191e6cd0dd045. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPA962080370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d58a47ffd4e655218aa16719bb487a45e83f3fcc8c084027faef71335f5eb6. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/JPA962080371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859297f78cfbe9d2475dc236f39d53181b263801e34121675f359b363e161756. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPA962100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e9e2eb89c4d6daf6391c37330669b67fa7e2b7e1add483a3a36ac8258ab48b. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/JPB622202568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4125699176446ebe3fc4bec7d019eb63766b2d41eebf63f7e3124110ad5309e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/JPB622202509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cfcb0c0303d0a34d1abccfc24daead87be4f39a7a65f7f1a81ad0c177e8a9f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPB622202569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d05270f92317b4f5f0efc5881607c3248ba4cd3dbcdef2f41ac35c906652ec. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/JPB622202570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80b2e97f462b05da662247d6a40c77b449177427f99648a5b0d80b513b721d9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/JPB622202571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa817fd4f5a5e9d52b6dd56da954f4470466f49363321d36766034127ef703980. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/JPB622202573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45eded5136886f4570b17c7660d11deabfab6ebf288593f08544ded40bcea5d2. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCJPD2570404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64365c362246df16b6df3268d91f98a017bbda1afee066bb6a11437799da69f6. 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/TCJPD2570409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf836252619879a41719b57a770b118218c5ff894d7ce98fd2bb6b3cd6b0684ef. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPD2570413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab45682717f6f1355790dd9c23f5b6179c2152b40dcbf86cf0eb8ac11ed127b. 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/TCJPD2570421.
モナレコ・コンピ -大胆なキミじゃなきゃ-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390c67f469b3c1c155829fdc72dd52684171e2ebe7aa62e8841e1624511a5f22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPS801851052.