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 0x2a8cf79474b03a7b84fd90295db37efe35db787d4572e5211acf084168750a6b. 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/102ab3fe-7a78-4296-b882-2e94da6e7718.json and https://artists.proofprofile.net/proofs/artist/102ab3fe-7a78-4296-b882-2e94da6e7718.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 0x81a283ca7ccae0326b2a32f1c96f52316219ca306ddf385ce89e9448c58d3680. 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/QZES82368798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22c420563badc2b1f40fd63ac455278f47ef780ad62c9b263a78f40ac5e7b41. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDD2384435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c44da3defd261bf98a4653eb71a481061fd3feedf5fef1526a98e6d787747e9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDD2384445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda6df09db7aa75e03c8aa5dc77c44349eddbacf2bbb3f8920fc157c536ea41. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHNA2399776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c84110b34a599b4c636f8f3048715dc31f152fbcedae427eaebee393723d87. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHNC2289360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56301797ac550daa4a64ca2f6dceb67ca4c2d2ace80b9010638c6265e9488243. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWS2286589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb02f915c4c3cf2392dda9514fac40590dcb8ee5ae7696b72acc0bfdc6b71d72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWY2231785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b552045fc35eaab88d61d6847644f3859a168efc31198072c91c0a04ccefd5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA62222530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ae2051765f6bfa96c4a97ee6743f9fe24e9a3625acc252ecfb0bf2fc9c9f42. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWU2139558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b61be0a80c4022e9b6cbec25da5058ef10695a105faa2ea28ba45ebf713a41c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA62222533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d1896dc444a49952417ad552d1447a28638055eb6ee5d0cc819dae2f3368f5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA62222534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d75ee3cbd3bfa195877b2160fe290a015191c7af1a1e091dc0bf2c23e56a0a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA62222535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9504c85179c4b45239e8dee4a98632c82f7bd39ebc473a47843aff52585eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USLZJ2569734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb76b7d90073776a7848b2018a84f00c4d72ee52ea4999b0b596b12c26deaf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZEB2421260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ad813fba8db088625c5ebbd46972d2b1647a1799fcc67d9e423fecfdba12d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ8B2454990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae0fddd936abe50c01b606fb26c4bb1b1a2f00a343f2e4ca5424937c55fdf20. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWDE2401468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b458360cf59c32dd35473639f2604387972dcac4fc1bc5996819b19c8dd3108. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWDD2488904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9387864d3eef56cccef48a133431532c76ca7c003aed081309a4946da55864f7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTV32479593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3c569376b3f7bc903930f0603ef95fd66ca2c5fb5564c57e00e0c2e3c43d97. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5FN2428539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bda6df09db7aa75e03c8aa5dc77c44349eddbacf2bbb3f8920fc157c536ea41. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNA2399776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c101c1daa860c22afc032579a1ea288a8c0c797e04844dca3086d23cf654d7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTBA2245880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54168801f06b22c7d17a1d15bef6f1609a8b237ba5f5de9dd47a09c97926166c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWS2286588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d993a1f108b1d9bfad69732557ecb6a221cd7afed977310b29efee5b43c004. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZNWS2286590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cec504fe818b158e1fade39eaf4939d7772a02c40d6aee9b558de585d62a74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN92224291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d473ddd35f0306b8699f45726e37a101ca1f5a68dc5a528167c6fe68d98f812. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAU2185526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ae2051765f6bfa96c4a97ee6743f9fe24e9a3625acc252ecfb0bf2fc9c9f42. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZNWU2139558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8650a45db8d6ba731014a1490dca866aaa3519be1f8067f5e4b666c464ab22b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN92178472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852497b30414f22b21b7345bfe9eab116d041f0d40e921f9710789a30c8f7f01. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ42148773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc3a0840064c77d3f3ee1fe89a73cd507cb73c1e5f6dada6fdf3f25a19138235. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWX2054716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7361f7fefc16a842af5a4513d0998cb5039e609845397749507421946ed3557c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6G2031671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e974a9eab7fb22a63425530ce77e2e68861ed7ed5bbf3eaef348349f6dda54. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNA2007369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f7fb9b1cb8f022fc325cdf165679c4822a6870b70c7c159c2bf1162c2a0c0c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHN32089773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd877aef9deb134458b887f0c6c0d064df0799a481f9246c81207f48caead8e2c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHNB1953040.