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 0x4da6cee085570a179723339a4d486f3e933b6bedce6bb7d405687813bfb1cd34. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0daaa1a0-7dbe-4ff1-a03d-4a89c94fb1db.json and https://artists.proofprofile.net/proofs/artist/0daaa1a0-7dbe-4ff1-a03d-4a89c94fb1db.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 0xff50bbd7834d48b594b6ecc29f42cb113e9dd67578fef79593bc6d505262994d. 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/ZBHBI2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372b0522357dfebb8261c842c7807a54df4dc0786da03384637ed03ff22ae6b4. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/ZBHBI2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c37fa391cea8b8463340ce7788db316f1427161ee65266d8bbbac3b83c03bf. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/UKXN22376546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a761830d26a8d9aa527ee99421b909bb3ca9ef355cda9339f60cf2b7746734. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/UKXN22376549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a46e4d1a0cc8cfe27b9c4aa4537bda4b87444559de94125679af9d955ef149c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/UKXN22383136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a0f75856e4bfe459a2a5a02a74cd2eb9a3f9f05c02d97db99fc3cfbec7baf5. 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/UKXN22383137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b15bcd801fb3a5034631f57892b26a7a6a6a9cfc74904a247562b6380067bd. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/UKXN22383138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ae3390d05de8f6888a82a5617fd8d7b95aba05d4ccb0bed12825dd271ba3c9. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:08:24Z), 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/UKXN22383139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ce56bde826c5f1c885cdb053420363ab1711e7c12daa6943adcb974c6c36ba. 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/UKXN22383142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fce18f5c1c8d3a3cb3d60b9c2983b8ddbcf1c13ac3518c0a801f57364c3e92. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/UKXN22383143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5c1947270a81d9b61992267c080195da8a36a5a71e3cb731b78b53075dd470. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKXN22383145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3f6aeca622c12bf273d383e63dff397aa4bcbe7eea4a04d64eb8449f091bcc. 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/UKXN22383147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2e9165ccff25724fdcb28c8d85bdb41048f598f6dedcc7177ef4ade6212e68. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22383149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dec099c82d3b74e62d5fe602a8f44fce5fd2da1fa0b027753cf46869fc080a. 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/UKXN22383150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cf0e84ad98a12cc72ef594fbc1f030d060763b9b43a497e9e2dd6c037cc20f. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/UKXN22383967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf1f2e12b4299475ded41a66762c10f67c4e9a033b8095b8dc4f5d175eb898a. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/UKXN22383977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0892f738f34c0050a3f8e225e1e28e1174cdff332f32cfb73497a5404986db1f. 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/UKXN22383979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afb078622998c798d60cd4c7f9dfe3e8b8a848bc0369cdfaca07a8dadbfb74d. 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/UKXN22383980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9735e41ff13b0b69973f713d903f86aa2d63596c60e1404a66acbf0476e02b6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKXN22383981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996285daeeddf2a32c0834ea94889ef09631bb8bbe2c28025d48858b9dfb1a9b. 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/UKXN22383982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a44f4109f7cdc57e32843ddf86ad939ff475cd22d6b1c56c3c28c420faed283. 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/UKXN22383987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bbcce6d1c9e346789b5a903f5248471f2aa9ab368688a64005d64d85694539. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFE2426854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dc71a8d719c9a97474e5d7625a5c3c04844c09dff0c64063b1b32edcde48fc. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZWFE2426857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5c144fb81df740bef3d85ea5d081e4ded9159dda3246e39a88611c01d47d83. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXH2J2593602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef1d28075ebfa59b93242ffb4e574c9d8567b536f10b1fbcb13fb92533c5600. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:13Z), 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/GXH2J2593603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa527d1e821576311579c615492279e3084b5c7b9fbe473ee96f9fd201c18949. 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/GXH2J2593606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844b46f1aae34e71a904aa7231e96fce1f968b1d2b347ccd34f70756566edf1d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXH2J2593607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60974dac22e598ce845451bd07460bf2fea47e9fc11f977bba4dad39361fcc56. 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/GXH2J2593609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a175842deb7d129dc0146b87e322a30ad1fb4783d1edcc979b16bc73d2d642. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXH2J2593611.