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 0x2e533e5af1dd16ea7dc857e3868cedf3b4bb9a5811ca1163a7c79bb7d5b45f00. 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/484f8285-5275-488c-9221-ce7b06f6b71c.json and https://artists.proofprofile.net/proofs/artist/484f8285-5275-488c-9221-ce7b06f6b71c.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 0x1fe1e741c757508667b3c5d1af9d329de79f08ed7333f0a856f6b725a294d5b1. 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/TWBW51802201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10aed420acde657f1a7ea6e6199ff369d5195cc963cc15592c5ddd849a2b59f0. 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/TWBW51802204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f2b7deb5b3a384aba3e63864d1e4a31ae8d2730993556d6585b2dde0da83c1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWBW51802205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bb2bfab2db6fd1f1237c61a117ffcc324808a634fb077cf5325ceb70023cb0. 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/TWBW51802206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142ccc32f8fbbfae7a171b337ba4cdabfc8ab7d7d5ebbb529dbb042077126553. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWO132011802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab1ae16559bf14a4cc7b001c480a786c8241d720c49ce7ba96c4b31671f0984. 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/TWO132011804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ab4df007022ce4c168ffe882ddc5a4c494d247dfa97ecfc4994a7d424e647. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWA532400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267cf6938e67667ba92dcf018bcbbec8ff2552049602cd4ae3525b8c1d238499. 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/TWA532400779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27ab4df007022ce4c168ffe882ddc5a4c494d247dfa97ecfc4994a7d424e647. 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/TWA532400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5395b508fd1fbdc61c683312f5e993512b0779313a92c7748f5344c38ce10c. 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/TWJD32300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784a179244633d2f9f57734d313102e6bb0baafd03e4fd7a23f6163aa18361d. 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/TWCC32201232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4542ec6707f69d5d1b3f91da443bec6de2f1c5927d16ecb916904dbd3c826b. 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/TWK971301101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0696f1492602ab7974133ef89d9aabf15764b6125af6c075097d73416b69764. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TWO471600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb9b5fa977d894971c20922d2fee8e73e5edb677a6fd71e5e8b10a0f6db56f9. 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/TWO471600204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c05a916b69b46cf67931e7b25ce6f59d0a167c7dfde252decc8894010e5dd5. 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/TWO471600206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e57ad4d39eb48c57e6cca4ff63c18d91baa9a2a0dfd8744501ebf940c221f64. 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/TWO471600209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef283ddd93796316a8643c87bb3fae3620a82ab0a6e669462481e26c6a34d0f4. 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/TWO471600213.