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 0xb21ab4f2565fd511b943e126ec3b8fa922d7a8ce6dc37b05aaca60835c665e5f. 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/5d4724e4-b02d-490b-8b8f-428e9f9a961c.json and https://artists.proofprofile.net/proofs/artist/5d4724e4-b02d-490b-8b8f-428e9f9a961c.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 0x98a3318f67ab6b9a57b3d8ed2785c770131af22c9189cf3890f44d4e65f600dc. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:50Z), 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/USCGJ2092959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dc3d2bb873aa501ea186c490121913aae769405ab2b6959026bb4c8a5badbf. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USCGJ2092960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf26ebe5bd1a8460164d39baceb1688f2918d944acf204e59318614020ac1e01. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USCGJ2092962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfca2f295295a5d677d1ff538ba4dae874f1441d0989f745cb236e7cd618d140. 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/USCGJ2092963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e05dfcf7988a9412c6e5522296a02a593c771081660557732aead7aa8aaee98. 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/USCGJ2092964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb792d93db95b102ebf920ba35052def519afa19cf66b0e353d29e77694b23745. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USHM92036745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179bcedc40a31f35952227708ebc79de70acce95cf3cb2fb9772df7942cf68a4. 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/USHM92036747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae4bf7fee10415a649a3a47aaee2109545ab6761bb05162d94f0036a3d3e691. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:21Z), 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/USHM92036749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18076d069b33d35b67fb715dea721b4f946472b65ec2d2e2f0ee2ad871969eec. 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/USHM92036751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015b2506d560e97298127ac3c579494b16c95ea3876e02e08cc360f0f7e29f8f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USHM92036752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff80a246af602e86a3804544ff687f184ee8e9000afbead7fcd018474d80a3af. 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/USHM92036753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a92d8b19baa60d75f15ab331d46387fb4b6362c3e983476e93dfd81f70de37. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:26:34Z), 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/USDY42111151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x369e0f180b8a46bb8b25465085f90f3f2610c37ab9d2647b16ea470ecb6efa17. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:44:15Z), 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/USDY42111152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cc0f0cd55a95562ae575fef95715f38db89c1dfa8a1b231db9bbb2761115f8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDY42111153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d3001bd9fcbcd31b798e36457ce994f2a94f7a8ec8a44c0767e61e6313f1d0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USDY42111154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8b03c384adac153fec15ae3d42bbb82f86cf464d661d2443c6af6da932f9e5. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/USDY42111155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdb382ea62c0da7483abf65ccf205bb31baeadcc0adee705b2b9dc58c72819a. 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/USDY42111156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d2bedfb83c0adf62f7f9bd0dab8c159049c81304e6f66acd90750b4476923b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:08:35Z), 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/USDY42111157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f43333479c6b2f79a14cea92d344fde9aafa6da32286f59e95a4e37e83763. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/USDY42111158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7802485f0c1b7260c5f28319b78c0b8b55a35a7ba547ee8dabfdd222f6f263. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/FRX452292174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1331b586b6fbf3873a10a6d4bfc2517ff56ab3943f334393ffb815bd23938730. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FRX872258681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25cd787cbadba5c23517ee772fe83c5daa175e42856e55b5d1b582a5b5b5026. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:00:37Z), 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/DGA072289118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a8293eb6f10199e2f2adc46f936aeb4cb789df7098d1cf155a3547fbbbc863. 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/DGA072289119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb89dfe95d04d42b8670609604978a7eab96f383591a90cb64b98706f7b927e5. 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/DGA072289120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b68d05e5a851ab018341b364815777542b4ca156aa0ca856168fa19781c57ed. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA072289121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17692aa05fda7a7e35f29693e9e085ffc0327a0651014b01f8a949b0a4c033a1. 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/DGA072289122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17a6b6a2d89b04f8787ddcb28e658f7840bf8111f6dba42cbd341218abe5d8a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/DGA0H2447820.