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 0x7cd01d04945c72b2a43beea3fddad68263fbbe6ce317650b40bc1e507c68cd23. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b1194fa-98c0-489d-be87-13f6cb34d184.json and https://artists.proofprofile.net/proofs/artist/8b1194fa-98c0-489d-be87-13f6cb34d184.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 0xe206e6aaa9ed4fb81f0b33349d3989f449f94e015ce8f9e02af5ca87dff8a998. 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/QZWFV2526647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bff8ed27ae1ae5a042a4019a73bbc2ea948c7e87a31c2b5297b4638ce49ec40. 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/QZWFV2526648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd592bb8227f55408fcbbc57dc0c8d44778abac4a53fe725abc0daf92806a5ed6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZWFV2526649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695359f10b92a08d82f1b2584a4ebd8b618ae145f72340e831449b82c5361fa0. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:38:07Z), 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/QZWFV2526650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ffa78c9998d36b93b14155e8db05b77f9e41b74224530c0f6482c7c6cb5633. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZWFV2526651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049500fdd5a108045d80707aaa25f9f3104def6899bf328660efacc011708bab. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:40:22Z), 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/QZWFV2526653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4379d93a73ae457fe1b8b164695e6243c4923204f7eee3732d2a1d823ac42e3. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZWFV2526654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf620c06705488ec1ca832a2d18e78a0c7982591d4f4183822597d2624996a93b. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZWFV2526655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d277f6f2ac05dc488ea84a1caf676ea877a4ce6d00b17587ca6f2c4b5182c25. 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/QZWFV2526532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de832d9cfee04d7e44ac5486e47cac78b63f2a53db2dd0f6b88b7092c878a4. 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/QZWFV2585770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd594ecbd6c9a28e2595180dd9264e3d8cd6171d36754814e68a5b500f06899d7. 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/QZZ7W2554467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320f0cc7030f3305b1a1fc502aa64a81d18acd19918206ec290bbe9d6d94bb8b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7W2554468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecd96be0b5c7ddbef97086c79c58b33abca9686cb1224f59c6303f92e53c14c. 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/QZZ7W2554469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66d9b6a35cd68aab5ed2911ef1232d04306c335cf23f5de7cd46563e68b150d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ7W2554470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ddf31e2f74831c95dde745c58f14848d261c541f299e05a6e90a3b2cdb8577. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7W2554471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f0b9f14d7bfba840b3c8c8a77055f196658535588b6323b3a2358e0ecaaa6f. 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/QZZ7W2554472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7de6056cb2721121653ef8a3a2d318522cc8c058123de871dad4a8aca76c209. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZZ7W2554473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e33089a47cfc3c441ed532f8bb70ddf130026f8b5ee3bfd26de1451b27eec1. 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/QZZ7W2554474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bd73e8af6f038d81ae0279ba489cd7d0af5f895befa987fe07e8f2c7755edd. 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/QZZ7W2554475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfccf310a69f5169555d7d5479dbbbb42032a129beb10e5692f600781f11a5d. 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/QZZ7W2554476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e20537bc66a6840313bead679131c9fa4af120c75e36b00db79fc5f31279a89. 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/QZZ7W2554477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc963631133a1845b19119d4520edadbca9bc1102fe67953da746d13b2d688801. 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/QT3FA2595570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e27b63f62c80469ca856602243d9f0d999042e56d249c4b3f197304afcb156f. 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/QT3FA2595571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bb3b53c700f3ab417fa55042303b905e72a637aa68cdd7f65c342b37004139. 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/QT3FA2595572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6041e38f5af844c1d7dbc4429e2bbdab333b8c5cebf01c7aea8887d6b26249. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3FA2595573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293e6f47cbefd8bcf1807538bfc99e0a84e03b6a59188f34815590bd493c4f79. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QT3FA2595574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b4582a5aaee2c53fb2b2e377a6bbe51c0057b6762bb8df9bf690f559e62fbd. 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/QT3FA2595575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276131c58fe2db5f3f28533a3484a66aa3d34a320d9b27c81cb48ce6681ab81c. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QT3FA2595576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8129e470f4ec86d1cfc63a28b854c39434fd8d801fddb0ad650b7ff0382a04b8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:25Z), 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/QT3FA2595578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b72509e1174a4c07722fd9b74b3cb3d24a53604b0d078c4bfb2c8f0411526. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:58:19Z), 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/QT3FA2595579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c57f3ae220cad5f47eb045b632d412fb00ac2016cad5682c84ee283e35e386. 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/QT3FA2595580.