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 0xa8254f37a9b6fc1388ab5abf830ddd5c130f5661465cc8086014e57c92bd166f. 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/ecee1400-f9ab-4342-aa34-d438f439ad92.json and https://artists.proofprofile.net/proofs/artist/ecee1400-f9ab-4342-aa34-d438f439ad92.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 0x4db3f7faceb98b5966965a5439914933c9f53c81cf728b7db6e6620e7a1abbec. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:05:00Z), 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/USA2P1323605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7e48d0d6a7a09ef37bca20f626bc5430e50dfe6c2626c0807b8b7ac916fa4e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:32:23Z), 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/USA2P1323606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d93aad0fcc1ce7dd88e896d89286bc942de9686c6d5c856a755d1598a5b1bd. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:36:14Z), 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/USA2P1323607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42c439b31a8721d079e6ccdb9d85d8dd1320dff6cf8be9732548d0000b1de16. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/USA2P1323608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf67e6f2105d4c8eea70cc0d7d712799e20b6b62801f80aad3e0419975f61750. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA2P1323609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb155d44ae9eaa83456e59588b1c7da1e683e38fa832403d1fc05a5ab961c19. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USA2P1323610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e195a63695ac23a2753236e1539832a12dbe1d7d0d8186748319c0c673177a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:49:18Z), 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/USA2P1323613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387436f278304dd1de454b3f731192dc955033d55093a4876d8b2d29b0080760. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USA2P1323622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762ca3ae388d311d2a0f74069a603cbc966ce9aa8a2179bc8e01f564e5507e7a. 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/USA2P1323626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e1a615d5cba527e5680776f0543bc3dbc0781ef0eac5fe0d39346547c5cde1. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA2P1323628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe04ab4a09a76388ea83faf30134217b9126335d4c9221e2caea1fe09352f94. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USA2P1323630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7d3eafe9dca1224818b1de9edf1abacf89b7fc5efda1a244fcc01571cbbcab. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:45:24Z), 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/USA2P1323634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f3861e1bde758e5fa2fab0281c738bbc14d976effcf02b2d31407df0613612. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:53:36Z), 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/USA2P1323635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4b251af98d9e25922b7673793fae708ef3efd4aeda065cd7846847e3775408. 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/USA2P1323638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361677e8dbd9d16497683f4895aa2705ade3066715ffce7705fbcee613e13bf9. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USA2P1323639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91406151a40ba66a31b6f7e5dbef981467184167df15adca743ebe4115187395. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ZADW51700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a254ec200552043f301ae95732eadb03d80fe1d1c931ddfba97fcaa45e9af9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ZADW51700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764afa7a3f8ef07759545f9b7e3f9cbbbdee6eadf2173fe52f04852376c92c85. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:05:22Z), 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/ZAWD52000317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e6513300164e42d672aff3e226aeb67f7d673c9cbe233ffd8bfa2b7aac3609. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ZADW52000319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ab3470fe4ee70168569000a686e384c3831a12ee74e1182c4590fcd2d463f9. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:48:28Z), 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/ZADW52000324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76d2878dc8a55a08058a16eb4154a5f8ad52f3d1d42b545981ed657cb41e888. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ZADW52000325.