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 0xea1280bea85ec4de7da24b89ce83b09bb89c8d0bc8768274c0c0137fc6185772. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bfd1cfa5-2923-4acd-a064-5c7ec7b38cd4.json and https://artists.proofprofile.net/proofs/artist/bfd1cfa5-2923-4acd-a064-5c7ec7b38cd4.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 0xfb4ac3c44a6e5287e91a60a721005aa5242b987c48845211b3a85fbf212f8f44. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QMFME2306325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d945a4c2621e9075188cb76d0938f1ddf60673ec059283f3c7ac422093df929. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:40:45Z), 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/QMFME2338477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b896ca9dc2770b023330e9faae8df6635340709651f585228738cd8d92b4c45. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QMFME2338478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e3e30e7fbd7d7ba0322300eca547babd15b5820a82c5501d535283c0523f35. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QMFME2338480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3d238dafd612a81828ae50e65dc70330f1bc9b44687ce742b5e15d5f5fc88a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QMFME2338481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135d13fc480cdd4d743939a681d067b074ab76f041ab06e5cb227b6d3d5f3fc5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFME2338483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a3fa8d50bf09ac465efaa074c410e273913edd6fef03f1c42d0a9e5827bede. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:52:14Z), 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/QMFME2338486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d4c26a2822849a1c3aa4f985b1a12114251a427f3e323c1357dfc04b43913. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM4TW2566930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a7b4fe9add52ddd2c12868e8360653d4f12d6bcabeac83bb815250e9ce2e47. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QM4TX2578493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a7b4fe9add52ddd2c12868e8360653d4f12d6bcabeac83bb815250e9ce2e47. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QM4TX2578493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7591e212dc2c65792ac1769829b7d78dd3d07a60cf1ca55bd50c1a59aec331. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QM6MZ2591003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a511c3535e06c29178817a3f17334232a6db282807252b013876699bbd112. 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/QM6N22570765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afe78b10f7609e26269d2125f059ee2a2d8cee70cea78cbd52ad9e5196ba0a4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM6N22571186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946d4c26a2822849a1c3aa4f985b1a12114251a427f3e323c1357dfc04b43913. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM4TW2566930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54250cf8ef47e211a646efd125b7c9e00da56e5d0c1c734831d034deb261b479. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:21Z), 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/QM6N22571185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fabb79fd7e87a9c8ebc2c2b1c3aaf8a3efd72369f6649886e73601911914cd9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6N22571184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04f16b992efaf82d33b78443b401547820d561ebd38b51f64d9bdff19274da9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:26Z), 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/QMDA62544892.