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 0x32cf5f642941740d6b9af04dbb79b4c1411e76adb37db4e753bff16831f3d460. 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/021ea857-ad13-4d9d-bb76-f5e99d0af6d1.json and https://artists.proofprofile.net/proofs/artist/021ea857-ad13-4d9d-bb76-f5e99d0af6d1.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 0xa36b4354c86fa60d3006f336239dabcbcc812bbbd205127fdd53a0a28054ce70. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/AUBEC2130597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e438f921275b25c7a5eda447f91ada33ed69fdfbca449a4e4daf74e0d31e37. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:03:23Z), 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/AUBEC2176274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a05798d983217ea5880af3b9c0d8c30d66b04dbf74ff8bad889d770a797fca3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/AUBEC2206515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c220080ae922b344d45cbd38ad806fcef49b95b211c1fa83b8d96b013aa628e. 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/AUBEC2214593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7637540ff33a35d8920e6153284a9c192dc79f26f1ab6ff69ebc7ab346692f06. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AUBEC2219463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d9ebd179f95f8a4fe87655639788516d8ffb74f1823060a1c5c8c8f2652752. 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/AUBEC2235681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1717c8485df825568ae020d82b72a92558a8277c5b5f5bb4dfd5d67d2b4a3a2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUBEC2236905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43f5022e336625fff98284dd5bdadb12ecbbbcea9d70976d28e5df8dd5c9749. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:29:36Z), 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/DGA052373809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863656bd9db26adb41179d0313eb9afd60759bd44097c939643054896f24818. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/DGA062333033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ffb1a1abefd78a4e683fd751c82e488b126d2216f45e96d95cd07fb5fd0629. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DGA0M2376737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcda9ae268750e93dcd41c82821fe4f44f01c7c91713488795b3890ca7ecbab7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0Q2389837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8278690d484874e624afca00f731485a673c46a1bbc9664dd59cd0e1a52fc0dc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0Q2389838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f8487e278a32cf801bef4b54f399ff2f794164f1e21e1869f0b45f0606b39. 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/DGA0Q2389839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450c6ede910a19e91628048658e76a787e767dbd7066fcbf3fa1f6805efda60. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0Q2389840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9773132f08be9b18c926951c52ef32af427e09e183f5efc1a8299ee6b24b2900. 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/DGA0Q2389841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a8b0f94ea914b4957c770a3445ae43ef7c9900fc9ddde156c6df972df093cc. 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/DGA0Q2389842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0abf9f00e1b0b61f139bf5c1140e6dac15406190d0b82bf39ee6d9cbc65aa3b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R2497925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5db87c02555343cdb9ec7c00e042673cd8594db242c3369975dde6fe1f9dfc8. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:23Z), 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/DGA0M2465099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab77320377330584416feb9371871850f62de454d38a3c73b5684bd14e7aaedc. 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/GBLFP2203912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb64a02ff3ecae28000e356318786cd3e3ba655439a417818eb4aacda8bd641c. 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/QZTB22299461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936f0915f4af49b495b470a95b7b1d1ed2adbcb1c7e1b0991739c29dab540be. 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/QZDA62122797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e4ab067097e36ebbd262dd841662db5cc7f95d8b42e5d7df29a044f64bc29c. 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/QZK6Q2292465.