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 0xb8af13162ce647ab3e89a09d968cd45688f485b7abbdb296c689c6dbd1b9c4a9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82f3f926-dc99-40b6-8054-3e82c99988a3.json and https://artists.proofprofile.net/proofs/artist/82f3f926-dc99-40b6-8054-3e82c99988a3.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 0xd5eaeb101f9ce91ac1f9daca95f5efeaaf6838d90e68a0fed90a64ab0560c54c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCADR1801710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5293ba578ee1d902912b46a99e0ef52aa4677dbe645fbf3a08ec837fe20490a1. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCADR1801953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fc42b3708e65b9fbf6481511b2139c3aa715524407f7718aade2a9cb2dc3c9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCADR1801955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e81283c0f0e9ad2bb9b57a1a8a5a961f420aaaa58df8f5a1ac3d9b788235c0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCADR1801956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d91d6b22f814efbe67bd4714dab802207ccf28b898192e3ae65d4b3434a9097. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCADR1801958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ce0a6e14f9587c20d3268a304147d06f6939af9dc86dbf218ee3e6e9de9ea8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCADR1801960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e504b149533cea8b9cf0c80ed48c084e59e9ebafd9d2e74ef4122317fb919af. 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/TCADR1801962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7bcd7b90d8de3882775e8a605cdf3b9db46eb62d765d7b4a90a287d360736d. 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/TCADR1801963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66627400c9deff0430f0e12c4f45af96133caba7af7bb6894f164b8e9f7c849. 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/TCADR1801964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349395f363fa5270171901cdd83a518bfeaafa37ab3831c28a32470acfe4995f. 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/TCADR1801969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304e5a149a444efbc5c13fc4d14f93de795c340407c471bb8547cf28ce0b7906. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAEJ1958280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc985495936b04642155e9d5fcd991396b341c12d7da4a9ca19d0052c14b5e29f. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T21:01:51Z), 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/TCAET2046825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec76cc38ec3110a2bea835a0547b1625ee7e12332db2dbe6df0842b6bf5fb1c. 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/TCAET2046833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aed35a69642db5c981e0e4d3b15924482bea834323b374cb0471c7a15fab7e4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:43:27Z), 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/TCAET2046835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fecb32dede998a84e05965e4b1567f6ea590b1ff1574909e61455a17d2566d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAET2046839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4645cc6cfa7b9a740ec7221b5eda9cf78841efc0d8d840cff41d2c21fad1914. 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/TCAET2046841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea6736323102d5b1bce42608d1a2ec0d68288e615cf34009bd67ad9a8a0243e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAET2046844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9fc8ebc2630f52c3afa6a9e9f39386f2f3680e04f2ebdb6eae23e66b0104ed. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:01:51Z), 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/TCAET2046854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6af54f0577fdc48fef86d215376b28b120b8f59ab5ee6f3292afbd0fa5adac5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAET2046856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb000d58b87873240de2662359c127ebb20c4c5ccb047bcbde717bd18133223. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:57Z), 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/TCAET2046858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6db7ff0398a16e8ce79624f3feb4c7fc278238a10515d5d8e67f54627a09c9a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAET2046874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed5ae75f6a22002c0a0957c3a83d8946aa91c5940c9a1295541c10ccfb6e563. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/TCAET2046877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca5ca83dabf1c6af3ab0df5b46aac75734267899c822b1cf661b430d3974222. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAET2046883.