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 0xae05d21178d1a71de770ad201e40c1c49b9232d3c14c91dd90e3891862b2a524. 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/18ad3a73-676f-43b0-b9e5-ff5c862ee2af.json and https://artists.proofprofile.net/proofs/artist/18ad3a73-676f-43b0-b9e5-ff5c862ee2af.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 0x9cada3b4885062d38847b4cf479aa817e9bcbd3ac9bb61c86684ebef16bf9b10. 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/ITZ4H2100015.
Mustang (Cambiare car è una scelta di vita)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc83ddae8ebc7d854ee32cf4432af1acd260d54ec8ae147c057ecca064ab1d15. 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/ITZ4H2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dac04fad455ad7f9851f76c6bc8b9b630f89a82f2e11a86a6fc35163948a1f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ITZ4H2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec67cc6a7e759318f6950996e06738b1f337f6b7212fd514d14c6e1403557a7d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ITZ4H2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff899377c91e391513c4639854bd33788a84d91981828a246dfa5d161f854dd6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZRP42259463.
Gli USA un giorno guardando quel che accade negli USA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3164d8d62536a8051f6b1c27eddca6bcc3348f406b22b0c113a4b8ce61aaa382. 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/ITZ4H2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d8dae6aa0a178ef40caae1781ebdbac2f759dc1eee22f4e48a0b37e042349c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITZ4H2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267fd56d7fa312f8657484661e96af40a2c8af5fa528a4eb22f96a792aaa0ed5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/ITZ4H2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fddac98cae89f3fe4ab1d013d163585f19aabf1f93fb18102bf010e1a75d0a9. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/ITZ4H2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb6393f44b50cb735d51555da99f506db228364eb4c53b6e5d2df070d127e84. 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/ITZ4H2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a7186c572ffe4b8a3d4e951f0a7086489451a7b0d66ac1cb6437381d17c7c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX452536076.