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 0xed5ebfcc39da98c0d56b9fac34739f0f7777e8b37826330aa3d7a2a34ff3dc4d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/973e5467-887b-4091-b993-1eb80fd37027.json and https://artists.proofprofile.net/proofs/artist/973e5467-887b-4091-b993-1eb80fd37027.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 0xea2334968096b6fee86a933ab2afbc65890f7e48811d55005cd2fe41e1821477. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:29:33Z), 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/SE5BU2171940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e016ab0ed29500b4930d757cb20ebdf68e6c6b836ce98facf7f197c39c98fb4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6I32230499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1866237e0175178b5c78cff175ad63d79fcb5686e912d289e0a547c8e2cb3bb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:11:57Z), 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/SE6XW2273130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1032ab97e22e510ddf2f2a9fadd87cc2ad4384f157fa91f9f57a56abe9bcc07. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SE62M2211612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbd4c483d49e4658a3b19e521d8db188690aa1f9705992001fa197aec9e745b. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SE5752375059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21d1a2d428f20f660daecbd9d27f52dede4b276bb16a09ea9b9c1c1bfbd125d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SE6I32419704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57447ce465f8984c6d691614f807efdeb4d211d23e1ac7289c9d4bb7fa9e014. 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/SE62M2386989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fda3893bea65abd0d5776b53927330583f032da61a7c475259ccaf69c9ba9d. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:41:26Z), 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/SE6TI2358886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6aac39e84e71192690c84fa7e42736ceff7164454bcdbfe3d12c186d0ff7c88. 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/SE6XW2351773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372c6df0578f3b4c454551dfc9312fba75f8ad747308da88488f397e7dc764ac. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE5752425216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ba53633cca8f9abca7fca6b2da64143f9cb374c1a2ec474b42cd704e890ddf. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/AUBEC2500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbe6d796c087f51ff2ee3313d3132c29abfd55594b0bf71edf624e8eb7dc4db. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/AUBEC2500215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4addce32331d9c3e31cf970b3a04c6d6a70e3c1a8ef482129f38c096f80cd5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T19:54:02Z), 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/AUBEC2512322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395ef69d23ea6d3d0053d2651fe6142ecae0d62364cf95ea4602c69405e38ae5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:54:34Z), 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/GX53U2521775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023998889c469e19df8eb71f019047f2a1594927c9e4f8d0afa3d781095fa777. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:26:33Z), 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/GXHND2549224.