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 0x37ef149bce0c522da832b6656f6b191482a485184835a220888a79553dc81bf3. 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/dfdd9ab8-2903-48cd-9f6c-3f0cd66ac494.json and https://artists.proofprofile.net/proofs/artist/dfdd9ab8-2903-48cd-9f6c-3f0cd66ac494.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 0xbca114b147749b87e44d4de09449cc1cdaf6ade2e1298a61467a4913468a21f2. 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/US3DF2496937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c2bfc65debfeb3da8c0fa9fe902dc6ce51e839d8e0c7829e9c15efe2df5e0a. 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/US3DF2492077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa817267c90ccf265450d7645807e6e01efb3ece321faa213886c5d54bb7df317. 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/US3DF2487062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c81904a906a5b74ac52fd70c70629672d2bf8707509aa8faf0ce0614974f67a. 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/US3DF2472593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd9d0a45d0fb6a0a91f12eb47e84ed254bfed6eed24f26da572f1f064418fdc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2438856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d4b258b93c720ab2e9f07440e32a44991d9f9aed1bc8355797486f8798ac93. 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/US3DF2422692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eed62aae3d1a59389d1c6b1eab58e3b8dbb6aad79dedac54450a913163f6487. 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/US3DF2416078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56e2590cfa9ae0ba0a1de76ef73d34823fab80668bb0ef7ee74fc210e885a66. 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/US3DF2406688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c195631269daecade4c248c0758281c5d39681b4bbc6e65cd7f2489da59456. 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/QM3DF2467040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583f4456c9a0f999a74a52ae11c9356d55a7f99ed0bbce0cbacd5d281d134612. 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/QMANG2257197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c629224f91acc0c9e965ee2783e7adf97b003dc7bdcb893c7f99c0dc239b0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:52:01Z), 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/QMANG2249582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f25dc123bd9a57c9d0e4f1da8b8628623611ab7fab527db8d3f5685974882c. 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/QMANG2235666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84de49dbabdcaa2931b2aae6aaddbe8b77d991e9c81093bc92339aca4cda4ab9. 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/QMANG2214941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18619e65356b61ac79bb8c01877e5b0c2aae17d954c2253aa10134720308538f. 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/QMANG2212161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f62be7e52b6f28f41e57937c4d8c01aa336b92567a434caaa0061e5879688b. 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/QM3DF2294736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4984c1185dca366ec9daf3932b161fcc0c91a45f7b38286bcc82c7fb862c3cb. 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/QM3DF2280206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782a78647a6603e329235a1702df1a8c78bc5bb365b0e7b97d3aba967d626988. 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/QM3DF2276537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dba188958684e0f54393fb366303c7654961de3da942ee9e6c4bf4e7b0fb0df. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:51:40Z), 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/QM3DF2266052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3681b786f47e0bb3fd1c1b2f5073c215c76d1a36fdb12f86671c96572e63e3. 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/QM3DF2270082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5d365b7548b5e8b009bb932e20e90260e353f12867b046350cebaac9f791ed. 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/QM3DF2257185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d8dcbaa0cb9825c0243053f3a1656d679360b702b1e10986aad7b7da8912be. 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/QM3DF2250256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407cdf08ef470caf446975e0f1dc39b800c89b908d391f18b072b9470124ed37. 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/QM3DF2247041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5880832e22c20801f21c3688262154eb9407f9a5323471cad2a052658b7987. 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/QM3DF2242487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0518dfded2544399a04d28ef9d3125e9a7eae22213463c7cdaea0e07fc8b34. 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/QM3DF2207063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf499fff149f68433124c3f7fa454cafe1801689b26614adbc1fa2742428589cc. 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/QM3DF2205728.