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 0xf2fe0f849371a48894b0634f7b621a1e3687709594da15e63196e75bff7d09eb. 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/3b770253-6275-4985-a53f-726ad8fa81bb.json and https://artists.proofprofile.net/proofs/artist/3b770253-6275-4985-a53f-726ad8fa81bb.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 0x23618467847c687621b804899cbaa2e083b484466d5f4e575dc491dc2589208f. 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/FR96X2338671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03059833682bbee09e1d3bc327bbd1bd0a34cb88c0f54ccd3a5a76d889463488. 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/FRX282300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895fd62b9eac0c8ec0e95b8f76de6247de636adffbddf22bffe374c8c9d0e12b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX282300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c613039e8911e3b5b60aa7203a5ad8bcd85d80f9ae57e868455e8765ed38c2b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DGA082347075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd930b958a7f9d5456873b75ab3804dda765f6f5045d25174cd16055e9831d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DGA082347076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e63bf818ba55bd7ccae48d167cdaf701beb5d63c162dc0dc7cef434d22381. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:47:32Z), 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/DGA082347077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f57ce421bbd1cc909eadf9fe7eebc699ac57c9bf90252fb0e37a67e7c2377f. 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/DGA082347078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df61811d9cb4194fb8e04e3effa75247edccb4dc01e18e493f71ad10000479. 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/DGA082347079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1420b91e5e9ad293601456bd27dd14a690ce9fdc64a629e0eb78d6c53856a8ba. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/FR96X2423994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca28c7060f8d96bf565309134d98f210677f0c9945cdf9a6d1fe2f73f99808d. 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/FR96X2437891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a294fc9303f7952479d166c23d3b02d7d1c35d73faadec51c06d4b21c80d14. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:35:47Z), 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/FR96X2437893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d0489ca955f81099df87a8648eafec0f485765448b12bded3820fa3aeb7c1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:05Z), 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/DGA072439355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2af85fe61b3fc583adc0db5dd107ab0e8b0712acb42c9f5c5fff859e5e37808. 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/DGA0P2452010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993d0489ca955f81099df87a8648eafec0f485765448b12bded3820fa3aeb7c1. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/DGA072439355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8af10c5a80b2d9208c466912b7a1119665c1fe65411c2135ae06b3f6152c74. 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/DGA0P2452012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49668af94c0c251c2d75c011786468b17dc38bf31bc4633b64c5237d6543b7f2. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:57:18Z), 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/DGA0H2463584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a5a7a1f0f8c6edd7f87e91e1724cf22ad519d55c7de117151370c6f13dee0d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA0P2452014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7188f675e261e7c319bb68ab4e40affef2edaa01a733bfbd2a4c7c598b09c92c. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR59R2568018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e58bf33a4295f0964102cc8fbd600915825e06584e97851845fd25b390b3d9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR2X42598496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b56060fbb515ddbd668efc0d4c4063400d2af41e60208e89ca80bc899a6db41. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QMDA62564375.