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 0x2a744b975140b1252823b3387957c0d78b8955ce0184bb4f4b1a5b4d67b38165. 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/f33b7488-2529-413b-9e6b-6748e8d03c7c.json and https://artists.proofprofile.net/proofs/artist/f33b7488-2529-413b-9e6b-6748e8d03c7c.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 0x1d69b14d9c89c7baad87bb2e5c68fb88559bc5765cb971dd69b981ab05de9e8d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNB1953288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c68bad3b7de8376c444d67895430bb2193788d5100533bfccf73feeace062de. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNB1953289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86efa28465e744234ef498a50751d72d29cd15989b7a9241474dea2ab2e761c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNB1953292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbcd2fa819e17de012a8f57250b66821064a48b0ba513129b379f6bcf1fb916c. 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/QZHNB1953299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec69f966b4b3d0e5cca9a8530e701fa54e0ba164eceb8066f232e2c11d8ad6b9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T03:02:09Z), 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/QZHNB1953300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff5dd36084796ac36e4d867a4c1828b4f95090ca06e77d51ff8ea24dac6f01f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:50:36Z), 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/QZHNB1947231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9acfd4f03fd52f703ccb8e7133ff16e32b3a85a40e8d9c63d5f16959a6bbb2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:52:17Z), 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/QZNWZ2003118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8614a75c16081d5c45db1aed2243e114cd0d4fadfb5c652d56a5e93b2f7dded1. 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/QZNWZ2003123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba1bcdcac30799e5f2c4fe103a57ce6f5dad9418fa878a733be71a5c2d2b0a4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWZ2003128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7872f5d00500c06915980b4d90fe953a2d444c218803db2964722b45f7b0e9e1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWZ2003131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220f56a976214750dbb96421767dc2f540ffe33882820909753e62507b19050e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:39:39Z), 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/QZWFE2455420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea5a0dd9bb5898c9894b5c6076dc364db56bce4f333c6bec6e9ed741add3fb3. 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/QZWFR2427824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05e9e36acd99d85d880a10e2b37f699873834fee5dcd8f60c3f058583f19f13. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZWFR2427826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce885504ab01f5f43a1e78b57d8308b0c1afdc95f4501af529864fa64ed352d. 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/QZWFR2427827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19a5cd7458323de67dd916c3863ae37136de226f9126e1b19d5ecac6cf64d1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZTB72498781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f982f134e2629cecd8d0516c145435f21241bc84e3a5cf9de44a128426c86d. 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/QZTBC2481287.