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 0x2e59a5ad32097e4d5759df8a8ff3f7b3243737cd5e866953da71d922304469bb. 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/02d6018a-8d7e-43e0-8a48-61cc7eeab801.json and https://artists.proofprofile.net/proofs/artist/02d6018a-8d7e-43e0-8a48-61cc7eeab801.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 0xfe7447932c9ab528394e691245ffddd8209a8217bf0ab2277163a8ff2942d072. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ARJAH2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1a696151b33af043e126db5f703465bb90d3db57ac7184278bcaabdb87e28f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ARJAH2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1a696151b33af043e126db5f703465bb90d3db57ac7184278bcaabdb87e28f. 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/ARJAH2300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7447932c9ab528394e691245ffddd8209a8217bf0ab2277163a8ff2942d072. 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/ARJAH2300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049dc989cf714ee74dde351031d87391fbed525367f4d156ebc708fbd132a981. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ARJAH2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bc8f2ff8d305d8b6a6723b258ee22910d85163d180ac34fcfae53730cb63f1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:33Z), 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/ARJAH2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848ae29476de51523584dadec4021a7b6800ef983dc8d88e432399d9729943ed. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:34:24Z), 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/ARJAH2300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a7d791a7a1da6b05aad1b5ff97f69498415e6627fde8e65cc6081ea384f40a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ARJAH2300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5765ceca07043f0e4d73865584e61204782ee99fba69d2e0f94d64342b27e31. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ARJAH2300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34834db2bdbe77e3b63914857867fbc8ba596a06c9b9f52cff92a556baf5f37d. 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/ARJAH2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5509ebc76a80847d167ba4cf6b02cbd45ae42fa0dfc436742d3ba7e7471a3af7. 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/ARJAH2300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89695ab722a81d256f11170d1e00ea22d0d562c16dc0e28671e20efce580b92c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ARJAH2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9aa32cfe00cc7823ec08b1b962966592bba9cc8c7c8a7dc7a9a6ccc07b15b0c. 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/ARJAH2300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7630e77b72a3f5801d60a83f4ad57184541a5ad05183798664d31a2fa100b128. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ARJAH2300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee703abd09e882e947bf84334abaed97457dd3fb2968ef35f99e0b3eafe3752. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ARJAH2300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c97c3b6d2b987a26d4e710eb616c60baa79d5bc01bcfe717ce4a54f764fd6f9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ARJAH2300050.