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 0xeff4ea9f3abc378b7bc10e9809a22a6ef08ac6b06b6ebbb8110e245c9397fbb3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a14a0214-8fe1-4acb-a739-206308028d0e.json and https://artists.proofprofile.net/proofs/artist/a14a0214-8fe1-4acb-a739-206308028d0e.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 0x6d51b3b90d36ee0763d016ffa14c5427bd1fe1d0f8791dd6fb63ffd86445fb10. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/CH7812062840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a99fe058355c7c9c75358f20fd54ee7361ee4d9b5e8e55b6c758a8918f3fb23. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH7812192708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20450ca86d39ba4ab64c650071c24d9102a2cec58e11b64a95312fcf63692d1a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CH7812193988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6a2e993033c9e5f0910b41884f6696a7af1df5419370238fecde85ef74d458. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH7812196402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab85f8a3f79c9d336be67c7d1a0e5676021ba2631c73a96d9ce7c94b691d126. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/CH7812198608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588ce841280675449526b82ea0a429c964177bf9bb1dd2228a1117c04a6fd236. 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/CH7812106191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab85f8a3f79c9d336be67c7d1a0e5676021ba2631c73a96d9ce7c94b691d126. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CH7812198608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20450ca86d39ba4ab64c650071c24d9102a2cec58e11b64a95312fcf63692d1a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CH7812193988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a99fe058355c7c9c75358f20fd54ee7361ee4d9b5e8e55b6c758a8918f3fb23. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CH7812192708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6a2e993033c9e5f0910b41884f6696a7af1df5419370238fecde85ef74d458. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CH7812196402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90982bc84b3e7d4927abbff66156bdf715e568db4c1c130c8c0822271f8fbb. 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/CH7812106194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1efd8690797086a773ee805b0c2195e4b5a63b2afd7d71780fb3b71c976a9. 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/CH7812233190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af4e03a75580a39b98db2e7bb4204ba0a6781d7fb9bb4c652156b92e1d4da14. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CH7812239737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d89061a093275ffa5b5185917f41da61a61c65f9d0ed29ee4b2e1c2174c683. 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/CH7812349252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5adf9f3d97908b48f76cbcafd9fec8e5b35c1c488f13a28ba594f41ddb7331. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CH7812351374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9fef0623cb72be61e893e5f324d2f7ea2b3bc7b3d04ebe2d522cde7c8e77b9. 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/CH7812354727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e459939d0cc0c475c729398b683ac464f0f8dcddfd3d9069fbf606527f4f778. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/CH7812354728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf613fc3e69ebcf42285d5207986141b75fd0566644ff30fde9f150c8c7f4f6a5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CH7812354729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d89061a093275ffa5b5185917f41da61a61c65f9d0ed29ee4b2e1c2174c683. 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/CH7812349252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2260d24a105f18c1baff9741be2eb4672528986bda5924b6e0037e84afaa27e. 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/CH7812354730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5adf9f3d97908b48f76cbcafd9fec8e5b35c1c488f13a28ba594f41ddb7331. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:08:13Z), 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/CH7812351374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ccf4dd339c89e4c69c7118d04cf42dd6681a51a0f8cff921694cfdab7bf542. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/CH7812354731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45b3e1919ed340da7d7b2f9613078dcb33d5618bc8d5bef2f8f16a232d3ebc9. 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/USZXT2352880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2acb48e4be26bd43135ba979c95753c40a740afc2b9f4c05f417e9a17b0ef1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ022105346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48516e1020fe99300dd3d652749a327d4336749de7e882beea15af2b0bff26f. 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/CH7812344625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a151d4201fd80693d03d2b7d66e9d6d60b7b53743d30a0c2932cd5d250c3de. 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/CH7812230794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1efd8690797086a773ee805b0c2195e4b5a63b2afd7d71780fb3b71c976a9. 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/CH7812233190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2acb48e4be26bd43135ba979c95753c40a740afc2b9f4c05f417e9a17b0ef1. 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/DEQ022105346.