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 0x1ef0a197245c135284411b2c6345ced68e15d228b5f3ef9c76ccf95bd392fad7. 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/dc80eb27-1474-4b18-b89b-91136d1126e3.json and https://artists.proofprofile.net/proofs/artist/dc80eb27-1474-4b18-b89b-91136d1126e3.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 0xb998b083c980ce646bc9083033b9a6b5086257b98fa0edd035f67360181b0f85. 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/QZL382229771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d59768ae3d9facf2a095b6f8e3bd5b48aa566ed42d5d5447ae76731f01141cc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:41:16Z), 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/QZL382229775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619dfc7de94a8c869c0f7cbf46a468cf706ce7822896dd381b04f08364d871cb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:24:23Z), 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/QZL382229776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4841dbd08ac2251a8c3742ac9d997907de3d8294c442487986eb35aadcda0419. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:34:52Z), 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/QZF8N2129661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc00a78b8d824e940334d5fa8209cff236e12bbfbe130c46b4a86f36e289a9f. 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/QZF8N2115310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2581add059b6eed0c517c613476cc86bbf5934b7bf44e1b6c0f1a38a976ca587. 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/QZHN42324682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8f5408f1af9cc7eda7fdae5a2ad9579a7affb12886ec37be2163171c6a399b. 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/QZJG51715178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb177fa771e3e878255f1c9089250816ad1259e4b18da42c9da5bd0d60158113. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:26:55Z), 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/QZNMZ2102752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e7ba03a62d0c2e578ff10f937765ab1f14abe8bf149f9f566bcf61c4b9c6e5. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZMEV2184392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9f4266ecd10f7d678f8c197ac0bb4da6ca4ec2d7f89d1ee6b15ded35062b2d. 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/QZNMT2280953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96067f532aa9aafcf10fcfc9a8e53d9a3e3fd37e4deef6e63c298eefebbe7f52. 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/QZNMT2280954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370f99a1e61d6bc466b170f773d3604e203ba27e407a5e22b597aa90ebaeb3a5. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:02:29Z), 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/QZNMT2280955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509344878e70d8c0c0b83ae9b4e421229482c3a61a75e162fd51e7f705c1cbcf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNMT2213479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca08e340399683963f49916f2f4a210aac211740fb9a5e1a0c189a688fdc276. 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/QZNWS2279435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18004a098981d54026bf9f41349bfb8c1e09a5fb8f6f341ebd86a061b7c3feae. 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/TLREW2223692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x849aa6c0dc4ff4e97bfefc4cd4551849e53ec7acdab51102c4db03e7960819dc. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:24Z), 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/QZMWW2275804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1752354bc08e6969ca5b512b4e829830778a31f8265cda994c0f7d75967163e8. 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/QZFZ42348665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff5ab2ecbab56e59e5470962c25e8e820fa12906e1625975eb72426547d86c2. 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/QZTLA2399282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d02243488f8b67cd38b8eb074f54dbe36e55a69fa8c8560ac795fb6dd0a8c5. 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/QZMEM2345381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62faf553ad1b7a7201e2be520266e549de9a69190c3705776d195bfdf9b9d95. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZNWY2357275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ec29f7196082bda0aced4706e3cfe07e5cb27e6d15556ed32ff466bbcd3707. 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/QZPLS2332252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae4c057b50771644794ad93d63f3989421f56f5a48ff86022f30a5b30626406. 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/QZWFR2368895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab9f395b71439d6017f832de44449d94d63ebc21d5cfd9eca6c8f13ad44b318. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:12Z), 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/QZDA72409677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c6fae437ed1da66d48210bb86ba6e2f644025d75f317b1e4eaeddd66eb4df2. 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/QZMEN2416237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fa4b5dd2de944eb9e2788edd3b98bf3755af579108c387485813a6d96a6cce. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZNWR2425271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d78923c7c53564fcca7a2bf4ba74fc51b443065bda6a82b431ce90cc9af33a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTAX2449614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e4b5180bf580f5159da25c75413ca8178ad6fe51b9795a51a5d3428c5265ba. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZTBD2417544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fa478f793b276ffd10913dba24691829b8b471262c75b221c9a2d4d5dd6b2e. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZTBD2417545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d78923c7c53564fcca7a2bf4ba74fc51b443065bda6a82b431ce90cc9af33a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:49:40Z), 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/QZTAX2449614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64d8bf55ce8528e4dec47abe2228c81b1ceb06b48423dd6ce5dfb77b2e06735. 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/QZTBD2417546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fa4b5dd2de944eb9e2788edd3b98bf3755af579108c387485813a6d96a6cce. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:42:21Z), 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/QZNWR2425271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b83bed8e964b6e9e482a9cfda975ade7245b74d7ffd3a09d1a12e684513bf3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:30Z), 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/QZTBD2417547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c6fae437ed1da66d48210bb86ba6e2f644025d75f317b1e4eaeddd66eb4df2. 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/QZMEN2416237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d068efc38a84488e1b2af723a30c2444a730369f99bd05a2f6d6c5b7ba45ef7. 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/QZMEN2516798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d764e66ac7255e0826d4825adb3a53393758e2d9f5a0d6ce1b62a0ad4cfa77. 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/QZZ7R2570676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5084a56febdec0cac464e41692b3ff9b747857d613cc2af20235880528ee4a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:55Z), 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/QZZ7R2570677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cde4aba7d54204906cf860a14b51c7a2aaeea8b42306db621b6818df47775b2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ7R2570678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f5f9b0ff8e355eb939214f63c62cd8d7c1c4b2908c26688959c755334d880a. 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/QZZ7R2570679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf632d64608fbea8b418d04ecad2357d79fa9003b9eae15f25017b631eacb5c5b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZZ7R2570680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84671f3ae3b7c5eb96229e534bb559c11bb892a95f4211ad7ab684ddefd44bb. 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/QZZ7R2570681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce408c3960cec44795b659db7b48ebdf0f9d631a6714fe765b5f925fb530c17a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZZ7R2570682.