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 0xbe818d0468a2634032471afb9ba6c1d18fa375dab7a89cffe36de6ef92f1cc1d. 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/31a73dbd-443b-420e-90eb-08e1ac984479.json and https://artists.proofprofile.net/proofs/artist/31a73dbd-443b-420e-90eb-08e1ac984479.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 0xb26c87cbdb0c895aa858c5711c9686fbc83f16e05d224f4326848ffcbc355702. 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/JPH492401040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752ffe9ad21d58db77cef5110ee88ab1387cc0d1681d6d6bea13290bd4f177db. 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/JPP302400545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f4f06d7fa37f48897fffee7358716cdced5823ff139acd80b287feb9b61c14. 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/JPH492401024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d90ad04d4240ad40b707f8c06afa71ca7b1b555a1fc21e44b3c29864f935fe. 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/JPP302400388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964e476357d4125ec75b1663174d9aec61615dd2a2c7957d573fa2385fa25156. 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/JPH492401013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13539e6dc3207aeaf033603f9115ca6b08f5384417a9258a4894d81db60be49. 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/JPH492401003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x228d3ac4fc6d9d554905a2bf1579e748f536389c4c25ca2d4088ede040c58f39. 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/JPH492301087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc680e75c42aa500196554b8252aca09d682b8103190f5ad1b52ce1783fa11306. 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/JPH492301076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec071e04c083cc8474ce6ea2cadde37cd7c6f7dda79156e9739a7dcf3cac44df. 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/JPH492301064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e29eedbd7c9c108b2d35161827b823cc815805ee6af9551ece82c1af804fb1. 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/JPH492301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67156a3efee228211d980144a70e8406400701ee0f1eeb22037e59e40495c892. 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/JPH492301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacb0fb9e1ba1e11981a166ab82c0c769028ea2ed3230b8155f44980d5e38a44. 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/JPH492301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e044717f82a80995d12fafe6055dec1ba0417f2d8ad5131907618b5d2e2c1a. 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/JPH492201238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fd6adc00862554cb1f9cb3b4affe6599e00edeb8c739774a855aea166f277b. 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/JPH492201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3913e165f1a53e8ecc61fd5f6fa388ac07b77d929bc83f9b041a83c7fce0e6. 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/JPH492201195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1680691c300a67ba42baf5f7343f6d1d36793e8e9914285d12ce7a3cedcd47e. 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/JPH492201124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d045ffa6696847593012f18d0ad001ba56f213b56f43e2811ff2b6167904a5. 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/JPH492201084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7369f50d711c790295eae14cb0e2eb821fffbcde9b61bd1bf4ca11ace8d9aae. 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/JPH492201036.