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 0x93f7c4f51c78aa1bd28d6841f7307a8b30dd91376494438925e516dfb268421e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ccac80a-3f00-451f-bc0b-b458c276eaa2.json and https://artists.proofprofile.net/proofs/artist/6ccac80a-3f00-451f-bc0b-b458c276eaa2.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 0x2c63ce390728fe1ee7ace491d7e2648187e10edcc3b7690aaf50b82dcd6bd14c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEZC62347268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a95244623670c807b42a35ffbeb9697da466787e922b4ff575b3e37af716d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6J2261113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa499dd73d44e6cb3d6b37dc616bf3cff37119c0e34bab88441936163b265d0db. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEZC62370676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a95244623670c807b42a35ffbeb9697da466787e922b4ff575b3e37af716d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6J2261113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8ac79cdd6be1d6a22053351967991a27fcf056da2d77db089fe05e3bf1851e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEM2237651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3208105d2b87402b1eed94427775307c4747ae25e4c4eaed1938e179d0493fa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEM2237655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca36926543586e306bd9968828a37ef6b8bdcdc4ec3a809675cebfd1ab9d17d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEM2237658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5de87c9c414acbf8e591477b462658847e18b80bbe7a9bc441a2dda36ebf1fc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEM2237662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc172199b5b0fa2642a99af688f3fbf29c3c898a5105dc711f67dc7dcda5a146. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWS2155308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b96728054331489e093301509d42016c8b4735ff776323e0280d3e607a6eaac. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWS2155309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2672cc0135ca780ad0f2eaad14e5bc6428c3e01927bc016188f69129b2af74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWS2155310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb4a09d310b6033900582088913e55fc56bb8895d365c08c4932a3099a0b7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWS2155312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d409beca395a0108efcc6352c09e03f95e95bc269e42eb697811f0d9f115c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBSMU0045031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d409beca395a0108efcc6352c09e03f95e95bc269e42eb697811f0d9f115c0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBSMU0045031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffa5c7d9f977fd8b950a501193be1e5209b1dc416272920a0f9a4582b2dc944. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5de6d770c29f9eb2f3565c2f71b457502631e5773f172902f70d9770d3af6f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62496232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a74bde4f3feedf81d1988c9246ff1ce54b752c7ad31e5ff3f4f85e5af2f7f1. 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/DEZC62496233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae046c5833220b54135305f807f631791da56d0a39c35e592bf0b4cb0c63eaad. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62496234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cc9eba2e166dba84efceee84cd8113bd5d7389474c33e7d1c545eaad940498. 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/DEZC62496235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3231069991656b2680630e820b260dbae67e7a33179000cadcb811252552107e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEZC62496236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e881941b0c2beb67e8ba51085c7171a5f7ed1a75d1f78a00874ac91b0d2e12. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEZC62496237.