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 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 0x39209765d45732e3f51aaf097f7f42096c435e3763108aad818394539aa8861f. 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/ddd0c49d-0b3e-4333-8b0b-0b43b4276186.json and https://artists.proofprofile.net/proofs/artist/ddd0c49d-0b3e-4333-8b0b-0b43b4276186.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 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 0xfb729d1742e2bd23f1023f6d7ec333e7e7a86f4123ef2567b06d7802121f73e1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QMUJD1303703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12008aa05b8b0a48672a76aa006d5a3a52fa3b378fa46077d8747a57d86ebf3. 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/QMUJD1303704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45942c5932e461ce1c2b9d3b8ebc89e87edb3e61784b74bf9ae15d75a4fda5c. 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/QMUJD1303706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7aa66237867a7ba56f4c104fa9e50a957f3b57026225ba7c08fcc83d202ca. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QMUJD1303707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6cb463b1daa7f8032bdfdc24c6e0f4d8c5083130f7f46f93ac8c3bd5b3c606. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QMUJD1303708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd19346411208ec6a659f74332ab47c681983252c39c3ef5224b2cf4dc6eabdc. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QMUJD1303709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ab6ed8578ec748a083d3204337a96cbf9ca8c8dac6ae1469045ef1d0c9f0bf. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QMUJD1303711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c6dee25a00591fb674aaa44180e6cc2f548078dbc15380540c8102910b8ac4. 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/USYBL1401145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136aa91e88fa7094aca119e83b808a0a91cf055d4b6693d9640b354baf4215b5. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USYBL1500670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c6a582a66e830e190109b6770bc2cea623bee57878f03f27de107025dd8382. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USYBL1500671.
For Those Of You Who Have Never (And Also Those Who Have)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bed0b047d9f89a13f9c919fc9a880c33a5000abbf96ca7d6747cc15e7acbff6. 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/USYBL1600457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00b9b60b2e51f385d04ad0a2a681edde54ab519d4a3bb5c811a78dd9af965b6. 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/USYBL1600459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505d8db357e38bd0f88b72eaa660c32bcd83ee7cf472cbee170d8c113bbec356. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USYBL2101621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bff092ecc4e3d4915cc6a27a0f579a5fceccdd57db465378ef62e72fcefa449. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/USYBL2101622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8cf836807ff667f226f96477ac9309153c2f7a26d307b63279d3fdab5315f6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USYBL2101623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365ef81783230fea72564ac6ba88362aa24a17dbb0d3b2aa5139e7ba4650ccac. 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/USYBL2101624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cbdb58efbe7fa211283a60755ef884752d441b3898cc4706ce16e631474a74. 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/USYBL2101626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb362289b0dac0ea6328c5e4b058465c58763dd39c7b21ba1d9e568f1279d13b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/USYBL2101628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69210dcdbe8aafb5a04bf3f2f04e6db095e9045148153df6c87f38f8cf891dfa. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/USYBL2101630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c18a10c9b5a7952427707e74e6ec63798ad6278e8b80b5f9ff4aad3c5148b5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB7CH2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef00b21886e55f064639d6495308fed81ab516ebc9358a44de5d4bf19297dfa. 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/GB7CH2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa575f076b1671e33668cfd24050c5337d149286ebf8c71e4ad81afd31c56b026. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USV291447241.
Air Texture VIII Anthony Naples + DJ Python
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9756c5cf1a5e1a2e8a177e067b158d084448777ef1431faec43bcb4a009b28. 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/USYBL2201094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c18a10c9b5a7952427707e74e6ec63798ad6278e8b80b5f9ff4aad3c5148b5. 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/GB7CH2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c18a10c9b5a7952427707e74e6ec63798ad6278e8b80b5f9ff4aad3c5148b5. 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/GB7CH2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9520a3028507e3b10875e7716c563f57115e0872e090f4a6c4a57166f38a6b7. 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/DEX262100281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd40f4db8741c8491c2f9bf5654e7dda24039e964efca33434e016f497d15c09. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEX262100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0251ec6a22982da06ceb6555cc971388d6743b2ed0e828621a68f50f079df7b. 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/DEX262100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9f81f58edc7f90813a1da68f56f6a05bb29454954398a89f514b04e2c6218d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEX262100285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8882ea6c02ea291dc152056b0975a0fef04b1046b70780999d21c33055ad9c94. 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/GBNG21300004.