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 0x852dc2ed35f1c19ea06edda82b6cd72dbf9be3bd4919e9b26a0b7c6cb9a99eba. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5829f1e5-ac41-46d9-ab60-5b26adced2db.json and https://artists.proofprofile.net/proofs/artist/5829f1e5-ac41-46d9-ab60-5b26adced2db.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 0x951339bb322ea69b5244254d8117d4769335f6564c5949ad9e37bd0230cf7ecc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZC62206813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff47a18823e4b7f3bc5bf68af00ce95607d26ae3b0e432d1b3fcecc5ea0fd5. 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/DEZC62213895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e01dcf7e25b0e16fd90b257c26a2a2bf1695e8dfb36759a44461e8d69f929db. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:50:20Z), 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/DEZC62336362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142c73bbcbf34bb14eb7eb24a151586bd7d1c6dfd472c397f187c879937798d2. 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/DEZC62352928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998e865a620062c9bc18f77a728d2730cdb10edcdd9a32777ed4479795fd9964. 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/DEZC62369404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ff1b2532fdc61040d2e4400d1ac9953412f8c4bdc0b685353e87d603f5cf1. 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/DEZC62385395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301dd43adb0ed27d2066198c6475c38d386d62598ace387ceaa0432426f3c9d7. 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/DEZC62385399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01930d57507a12cf07089f0286715060eeed57408c32c8658d4e68049a807269. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/DEZC62408724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c31dae3115ce54fe3fed85ba5805020d4affb190e774ded2c84a4c758932b3f. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/DEZC62438537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea1028cdc8bf8cf8ccd8f0f7715c86b2738c078a7eac543ac35a8af6c07a19f. 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/DEZC62455763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689fb88f9742c73181486bc3f6709a33207d42c81f615c1a3344ad4b213128e2. 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/DEZC62464427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2ccfd250bccb70bdbcbe09e7df51c0522cb6c5e2a937b4cdca845de5e657b2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZC62464484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbfacc38c957b067398dce894b5f3805b7e3575062e7f0f30a3dbe250184947. 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/DEZC62464485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aaf0f3976ab464132d4f30926aa8c9311ef64e159f816470b4905e7f55dc1b. 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/DEZC62464489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0422dd177b858b551e7111d04c14e9f8a038216df6a2bb7a57f16890954e628. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEZC62464429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872cbb0a2c20528c69ee682fe2817b53e060a0ac211c1b60f2d566c1e7891466. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEZC62572566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc075c59b2c620e18e2d63b1e60c303782c8df924bf337a1f286a20c46cc9719. 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/QZES92547096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7d1993aedb22a76bf820612a32375f18914a534296efb6a326da2dbbff13cc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNA2516594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0bd787ddf5d566ef287fb42bf89cfbe8fdc62739db2856fffcb3e93ecb3828. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2510710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bf75cf140eb4658b87d225c034ea2c539db597e4b6b03143686a9ac6e54261. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:06:06Z), 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/QZNWY2568347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048d8c94bbe0f17dcd755191f942e2fec6337ecace121552d0bcb348ebae6d0b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTAS2598798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab4b46ad0096567ee875baa10c492694108f2b873e22ef509084cc48bf7d0fe. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTAW2597409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed13297a81397f29b76996b9ccdb9000f52d19830e9633d35539d49dbd882fe1. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZTBE2585869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1f0df0beeec000b70108066bc7ecf9f3b6b1ad5f8c6697a5f55de90863071c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZWFG2511283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d83bcfe0b01b414fd2cc662d095627adcb658eba38fa8453f4cbdb89c78ee2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZWFK2563003.