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 0x5980aa076f50ccfda68bf0b14837bd1daf407664a001ea00c250f327b7f228d8. Chain 2 (Bitcoin): anchored in block 953660 (2026-06-14T17:20:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/515b120a-4af3-4272-b3df-fa4596872bcd.json and https://artists.proofprofile.net/proofs/artist/515b120a-4af3-4272-b3df-fa4596872bcd.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 0x08484c213af90d937f3d4a52a44509be18cb550ba314c4864ed861bcc2db6b68. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJW2245516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1788f4bd1bc9eaaa1fe690571366b3f52347223eb76b59d246cf0fd0bfeb11. 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/GBLFP2215428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81fca608605b81ed1d55f03a70c508676f1a66a64e825dcb2ef8ee3affcf0bdb. 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/ES6081540306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086eb165e455de7811f1f1b380e43de28c564947db67852b7a3c75d69d41bf6e. 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/QZHN82058872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe781c16b37571469d04892c4e0f4db02249264798f4d3d7508fe4859612e73b5. 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/US6R21318114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c53da0b0bf0069c08fc6ef16713e431b5b7fcfe36ef32de0e2009a49fa8e43. 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/QMFMG1331730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c5023ed6f23aad4b605bab761b62d7f64e9a23b1d1179b8b3a811847c32479. 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/UKXN22224099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1788f4bd1bc9eaaa1fe690571366b3f52347223eb76b59d246cf0fd0bfeb11. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/GBLFP2215428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8026263f20eb66b9e0ceb4bf4500f56f9a0c4b726f44b47c7630fb20aa977e. 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/ES8242071702.
El Pez Que Se Muerde la Cola (feat. Teko)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c34b6711230d9667378589b1063d4a850a6d687669396ff1714582deda0970a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US6R21323547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85f8c774c7d55bd7e628825205336a35c5d050a61c61e8edeb93b27dd587134. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/UKXN22224100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b5bf4a03f01e34eea2f96649b71a7775fc845d329a3fab4ef319fd0070aa1f. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBLFP2261043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7d3f04f9967bd3dbf68d597ed456bcbb81785ff77e312b19d3c5a84af7e0fa. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US6R21323546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a9c7a0362480cfde7a9f53d5a16d806ee93c3af3fde1d6ce0feb76dd03dfbe. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBLFP2290902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a12cf0270f49a14a16c30d3ad4deaca2b89fb95862d6271039a984f9941ead. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/UKXN22224101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901bd4523b37bac21408663e7af373b6343a40912eea61d0839b72a15de6d1c5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USL4Q1738528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d224d34d778defe9aec6662d81591a7e9ec1ff29b8f2536853c3436c4754509. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GX3Q92351898.