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 0xc0dae11ba31e3ac60f9ab5928330a508136d54d23b66121b2c66cec5227506ab. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0306b98-d832-46a9-a06b-b9bf7a88f092.json and https://artists.proofprofile.net/proofs/artist/f0306b98-d832-46a9-a06b-b9bf7a88f092.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 0x5e3f7eeb83c072ef693e50b27989b9940a7aa756dffb6a2418f6942dad3a1fb2. 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/GBLLT2300099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814ffbd51e481bafd87651d1fd55ea188107a606af490813928abf376ea6af36. 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/GBLLT2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01510ca054cf1fdcc5db2430421ae350e7b023a64c410d1f00c40d4b37144ed9. 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/DGA0P2396912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94acb15ce99fe51ac09720e32665f8a0b339bf58f885e17ce5f09c7254e1210c. 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/GBLLT2353343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346e4f6db0c536307ee8441d5ebd47a80e745bf4fbf312f0bf199fa51637a4ea. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QMFME2397750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207bcff1bc6f7dc792979531c8bd165557176dfe07ec812f8cfc55559133bc8e. 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/GBLLT2231245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6249989c502bbc5e244c3d1636e201687d86369e678b23e43169a6ccf7e34c92. 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/GBLLT2223170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cfca4e99bf92e42358a789b2b3445a3d42ce0a5c27dd4a31f8a37ea1449a62. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/INR831900908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb60b0db473f9aa32fd154d333b4b57ab548425a1920dfb487b9077b2f24aa27. 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/INR831900909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12406183efc7ea4a6f805504f9ebcaed1cca2c3b7cd20235d61c9e788922421a. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/INR831900910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af31c17b2e8e0691cf1e025834a213361abe8c439ce1c46517d0b671af429f5. 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/INR831900911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acc1323d6124d9ad81e340a2600edf6e81e5597931b4df197fb53b87bcc7bde. 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/QM24S2006878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b07dd20deada03b8b9cb2ab13d977566da0cf9c87d0031b7973bb9a99ac0810. 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/QM24S1928084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a029001a7cecaad7585fde543b400d7ab7195e5ae8890233736fb22f560799f. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:31Z), 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/QM24S1925556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c63b67e8482cde83b25019098dbe9e4090c298dee18feface16f2cb7b62747. 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/QM24S2006879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012a2acf455cc554c3964a959600525010f0465f953fe39fc4e74afedbcf29d1. 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/GBYPD1000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c842f80478a05d825ac4071708c12f8bd2f1ce5e73cdc45d193deceb1c9b39. 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/QM24S2006881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85fa64a2588afdfda2ce34e96883824b3e8d919e8a1a39711af72e87f317a2f. 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/QM24S2006884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06a946c013392753a534c9b5846a236a558aff9980785eddcd9a694a08e1792. 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/QM24S1846241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee83becf41ae70cc230bc95a45112b0e387d466fb128b8e9ebd461eb993b8b95. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6M2215021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cae07aa8921cc38b31cd20c29a58b911afedd75f911aaa168cd24918afe95b0. 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/QZK6M2215022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3e63542ea1da431cfa8d8aea1506f19f7e7ca2c8dc8576bebdde0803fd7346. 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/QZK6M2215023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04458fef832e2c86f9c5f0cfb3dd4b86b460942692a217554c9fe0ef7c0dc220. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6M2215024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e6efe057efd8a9be675016ac41583513ec9b2afb9df44166a4156e2bfe3933. 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/QZK6M2215025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787729b0960d48dc8faf234aed966d95b233d4eeefd50cd46a6c2c92cdf0b0c1. 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/QZK6M2215027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b39d36bcdb764d76227859f042cac0ec9abf21a6251dbfc751cdc3a19fff8b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZK6M2215028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbaae06e4d855d8ba1800ce1a24363064fed6c1bd5e0dcb559390a776d1e636. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6M2215029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c04c341596de91c7a1259c2940587d57f07b0b9cf363835a3bf9b2fc4d61ef0. 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/QZK6M2215031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df777681609655d698e98f8ea92d5f10c9925b2bc5d29e26a49f3392a3f7e5e. 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/INR831900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0691c4f6a1fc1d0fb75f22e4da05f9b099c6cb0f7384ac6198c13850592f163d. 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/INR831900414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fc562ce8b50db95033194a25304911dca25d5a1597d88c3ad0e9b749ecb0db. 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/INR831900415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3475b24f726da21e539b9134467b4f74afb675eea27ef12939f351a4577d35. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INR831900408.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7358c543e35626651363cfe9dc2b6575933abdad9247fa6b3bcb4e37344b1fb5. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/INR831900409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a8d033106d12a09d0db9df203336127b72fb957ef1155e9de1045d0d2a05b4. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/INR831900411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58823286bc6ed2bac58e8399a7cbd3fc82d49cc33677bc947cc7e140bacad8a. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/INR831900412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb49bfdfcfab9212619ee14e2a766d892a4fc47405c484d6cd1e31caa192e6d7. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/INR831900413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797ffa944918f1cc1cf15140a665b24c9f891c967f2b6a439be6f1b9b3acbd8e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR10S2578757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335edf36b2a183b8f54fe31901f9e9b55f6fd9a13dcbf5fa5f0c924cf4d3c42a. 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/AUMEV2511474.