1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xfffceb4ddd9ed0a8749e02d90e7e738e59bb29d56d121605dc6de71657d7861c. 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/194648de-03b3-4043-bd21-d88f9b807732.json and https://artists.proofprofile.net/proofs/artist/194648de-03b3-4043-bd21-d88f9b807732.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 → block OTSBitcoinBlock must exist at that height 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 0xc7325a3a3cda98c2e4ab50d328ad9b0080c85746e384846e34163d30987c7451. 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/CHB391400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2aff479c8ca79d8d0a940cc996b5cbd21200e5ae3da4b9a30f6a290bd47506. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CHB391400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe9957f7b60d6354f28c39e2492e889689bc67995ef9c808e1e62e216863eca. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/CHB391400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2704ec47feed0fd3e8dda293064bfd5aa4a230593ce23ff96eb58add498985. 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/CHB391400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be68290843ed1e94294ffd9a6b930ab91e8acf2500c4ee1ea956e0d64df6f0d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:16:44Z), 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/CHB391400028.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5035a855646d13f9629b49378294acb44089ee96c0618bcb413d826fbcb3aa1d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEXF62311713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ecc5baaafd753de3a3d7b04b023f9fb860971c264282337bd51b91d0f1112d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEXF62311705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3189748cdd2404b33d4f72bd5a71173956ea394f013e2d372351f036488fd0d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEXF62311706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4f10deeeef514c01f25872d78ee8d9219edfb815578a01ff8a73e54009a2dd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEXF62311714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c4ff06b6b8eade6f5bac6c16ccd7203db9564dd02856e759c16e4a2064e117. 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/DEXF62311709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4dac011f9f0c20d90485867bbc774842481c72e5edd0626b0895501480c39fc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEXF62311715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295b0db710269a539a5891dea12917cd4f29237890a776152c296711d121794e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEXF62311711.