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 0x8656143e84ebc5930b5a7643c3b33235ea8c6cee62b24794331d1ccb59488f63. 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/ba1783e3-1f83-4bbd-b910-b2d72bec0600.json and https://artists.proofprofile.net/proofs/artist/ba1783e3-1f83-4bbd-b910-b2d72bec0600.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 0x5166d0e8802d875e2f94874997e66bbff568352877bce37380c83c7059c99e32. 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/QZWFL2315909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262628a9909534f856a35cf1b8b740918c9f07c7845b8552e1cd0970d824a597. 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/QZWFP2387298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a157117f3c58ae7a996a49d2c9db9c0d7de5fde34813d59ba46b28d6291efa. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZFYY2413215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e19d7f18d1c42ac5233927707710dd2bb55239438c7d3a1d306f4411a6aebb1. 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/QZFZ22419050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf697c5e8eec464b0639c35b632c7fd4be087e45cce682c30dca22a01cbdd931e. 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/QZDA42492638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db1357f129970e8ffc844f660cd7d22e4d4af9e4007a5645568c88265f9e461. 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/QZDA82498563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a763b34ea064febda8dec5bc8da4c2180d64a36bb884ed456dbec73c07cde2c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZES82441612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367fc35a01caa92da06c5380b6bc5e5c6359a9e1c0c890528844f633f3d38f7. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZK6P2421969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee47d9ed981a297786a293a7e817e83876a5f87be59d89bf641f3de5d294957. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:18:30Z), 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/QZK6K2461938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ec3a63a955b0e3de3d18b144874f4d852c9856dca70b7e2aefc7a0e423634f. 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/QZK6F2467110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc35f46923a6aed257cddfc5d0bdac97bb83155e7dc5aee4b97edd12af4cf2b. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZMER2442647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c513a870a96715b115b66992c41e7c716d0d0076eb081fde1c321f701f086ee. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZNWW2497000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e36b824ded562b719b2665f673701ae798efa69c504763b31cc808c8e658aa7. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:05:46Z), 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/QZNWY2451157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d188f73330cedf5aa89d53db620f644949608b8b89584354d6d58308f9d2fc. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWZ2457107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3613abec017a6c7954094b938c2d2359f431cefa1b119c901970456f73ffb3b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZPLR2402603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2f8b561e8bd2305cabde7b54389770954f3384195c52fd9a36c5872c2ac276. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTAW2499756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5720785e513cc1a7bb7a3c1f8b5887c755d23660afe123415f6d8a924f18f4fd. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZTAZ2435252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2943a465433d54a37f258aedc69755490e3859ed7342b8b267f588790945b5b9. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZTB32470821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d3166d838557daafd65f830ade0f9ab051ae73cb1f56c977382bd5d82c9c1a. 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/QZTB72477382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ebaa885d580331b58674f7bbea2df8f92c09451b90b5e413af2f5bb4485d02. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTBB2401536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135fc46f1b38a49198ade8bd126d71401f477a84d2421fbae68ec7cebed73b1c. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:02:45Z), 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/QZTBC2498232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aa74c031daaa92a1f2302467968e25b2d15b2c1ff8a01f39242ee403a68d04. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:09:34Z), 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/QZTBF2472393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11113d713cd848cc33551e0db6b3fd2135407bbc6d5d679a52a8213285609ac. 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/QZWFG2419457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507ba579cbeafcd88b8b8672cf88a0a4822e4c9e03f88fbaeacec8c73318bfaf. 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/QZWFL2468823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf491a7c5106362dd7ffa8e540333728c4824bd735cc560cb506b7d0c8f99ed7a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZWFP2415716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0728235c05cacc3326c8fdb739771d74884ae64ab775b1a166bb1ab0acf62b. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:04:17Z), 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/QZWFW2475312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6e4e07748135eeded9c539a248eb38192810ee4a8602851ce9525cb34ee395. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:24:18Z), 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/QZZ772406456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98f27ba0b0aea9ffd94d975122c3d29f3836fe69f8298287d36f9c0a119ca4d. 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/QZZ792455372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d63940e38ecb69f4c3e8e67582996370a9b6f5cd31ce17b298288357de70e7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZZ7K2475548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808449c93f7b4e8ba295643a0aa92c302958090a30abb1884ec20275b7077337. 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/QZZ7T2511101.