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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bf89a6cee519e92080395308c7ad11eae078db9ba0bd84950363b29912c26e. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ac6ea02-e87d-44a3-8611-7c6af3598348.json and https://artists.proofprofile.net/proofs/artist/1ac6ea02-e87d-44a3-8611-7c6af3598348.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701fc771506cb0e086d7b3928b654b7e59c1539617c3f5e53e9b588adaa43a53. 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/TCACB1477631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9947119d871818f0f23a1f1ab94e915f06cc3854b266961969b5270262a0c5. 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/TCACB1477633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1816371f3f55a4d15cdb1fa20f2a67a58b7354e5c45561bdf5de3e892d40ba9. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCACB1477634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc308f6d33dcd19f0cde0472515c7c8622122bf3a68c066fad6887eac54b4ab3c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCACB1477637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd125c249a404710d617bd42136a17ebf347e5db7f5961680059bf88df2e50a20. 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/TCACB1477639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67153f77ceab09aa97e78956453ef34bc3fee6e5f16af1e3857d8c11e01c831a. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCACB1477641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4008742fb78a00548a6189e67f3da5e0997e077a18ceb5f7957f4121ab573f6e. 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/TCACB1477757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a83f08a8a80a2d63b6a2c69d46f95f7b6d9d2e14824f2c668fa0730cb58458. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCACB1477786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d3d6ce6bea835df36614b3efb12961619296b688a88ab5481c885743aa023c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCACB1477845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947eb92263d2127e59c706e279ba7f13f1e7ed78bf2d407da69250d9378d059e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCACB1477875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bbc898edb5ce970e12d1790ffe899212ac2273876716e46c587d3701b3aeb2. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCABG1203269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23062c2ac9759d9490c6fdf0eb41c3aa1bb08eff8b4d07617a56d7288264cb0. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCABG1203270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc292caa68bf1ac6921d4522f024a41562bd66f1b7f7b9296ff69133dff73f2c1. 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/TCABG1203272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6fef41224bf68b1a032b765155f4b6c4a9890a7bd15fb52523c337d9a5f50d. 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/TCABG1203273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792a039f3a2229ca2e3a99cdfde10dfae0a84ebdf49ba7121a78f36ef16d3132. 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/TCABG1203282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bed4de56602aa75aef5ade658e960743346e7c4efcc0a8cfac94bc871886847. 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/TCABW1417971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3749373e1cf72b4c997d72d97a2009c68901fdbcfa5aa7350c443b556c0a6e7. 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/TCABP1356911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0b7918c902ca36a3e3031e9985f700a44ec0dee2f2e82b93ee15a8b367ecdf. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TCABP1356913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3965484ac0d139dc8fff63d505d4aaffccea3855646dc1f93d5db54bc276c4b. 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/TCABP1356951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25cfc9971df3b3703a2415b6fd5f925f037c8cee0303fc3cff79ec880a0ebdae. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TCABP1356952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2378c9856a3f2c9663387aa9b27e64acc7eceeac5de9ec6b3f850989297aacf. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/TCABL1383858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6bfe3ae6bb43465cce101637af5dfd9a8837e5f3c016cf8fd59088d288a210. 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/TCABL1342362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218efa624e7e99547c38a7f3da59cace040b7ab7acf96f0ea3abd3edf5975fa2. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TCABL1342365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e693b35b72dd3ea8389ea766498f18e0b1af24e8d48d0657e47ce168839c29. 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/TCABL1342367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb367a32662cd7ea5b910e5b7df9784e27c346e99341a26b287ba525e46695b61. 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/TCABL1342371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b56655d381fa586f3829e464ac2531f7aed4b293237506a24589a5bc7c37c3. 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/TCABL1342373.
Don't You Worry Bot (feat. Brother Blake)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86363d0ad3205d1ce2b24d73f73d1a29ba5f80da62b4126479f2e4216df95495. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/TCABQ1390110.