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 0x5b28147db282cc817473623cddc0501f92a7a58b2775247817279cc0e5a6f950. 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/4ee33581-5b26-49d9-b8fb-f283f88864a5.json and https://artists.proofprofile.net/proofs/artist/4ee33581-5b26-49d9-b8fb-f283f88864a5.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 0xe39b4444af852135c2e0ec46be956d2346124f32a9ca5c268ead5c4d03f3ab9b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAGY2386669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a01883696a4cb45a7a46f49ce708e294879d9ddd3515c4ac319aab5ce948f0b. 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/INUM72300588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9883ccb29cabc11096ceff4e28fca02bebf21ce9032cad7e03944540b2c3b1. 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/INT132300559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312e8a37c32c302cd2ad8ab9f7c8961fffa20e2329dee85c889765cd3269bcbf. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMG2362515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd933ca59e9b952fa0a6fd92794d5696dfaf1ff3fe1fdb1fa4b016c4d12782be9. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/INH102404347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4c591ea07498990898dc247ecbe56df0c3f1122be22168036c16e5255ce2f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INUM72400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7ca1949f58850b55f07d6bf0847e0899498f264e035fb4253a0324b03eb2c7. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QMBZ92447916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1fefc00243f95bbead03c2792eb0bb9f8b4a0f362db882eb5d625a8b607c2b. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMBZ92447917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989ff7d638e917162a94ca3177e44352d057ed09bb517bbdb5f479c8010ae860. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/INH102412657.
Ade Hudugana Mele Matte Matte Preethi (From "31 Days") (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1fb47cd09c3cd306d17ba57748b6393e4d215a78981d772471ead240bd13a7. 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/INH102501814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44048a3aedc05603f0c2ecdcd0a1d2331581724b274720fdd7bf1bc227a7ba6c. 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/GBBPP2263265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20b57c2f48a9b79887c3ee3016f7a716d0a184e3cbd48682f2ae30612676a1b. 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/GBBPP2263267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84afda2ad4a3be2cec814ec3437668e4caf1adc52413e62ca5d7133324fbfb8. 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/GBBPP2263269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340fe1c3766d0c9e6ba13851d709f26e0ba02182a4306a29dfd6f2072028f94a. 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/GBBPP2263271.
Attack (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca6e13619efdd402c06d751b17199b9ae8e12302f281d64cfe9a79c52d0e428. 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/INZ031410409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe269d0af979bceabbedce5a32e8f1a63d57a954064ab7ebd038c070c38c08174. 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/INZ031410410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfda0b8e850cedc6d518dabc7bc7c27bfe49cf5df18583e28171791e522f6f8. 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/INZ031410458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e38597950bec0572aeb01c5bf89be507b9dd28d1b1278ffabbf83c9e86c656. 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/FRX202131743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4542e4d24a040c920fa3bd4457a37b2d7bb12c96998d698100741b4da2ae1ca9. 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/INUM72400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e76d9f04910d21d7fe68c2b722b861cc94ee284ab837c17c458135490d8deb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/INS172307383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404758be87c5dd4356b5ebda09c7a13b68e75f3f7804923b99b1072306026fcb. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/NL8RL2423580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32fe632585bfa1012e83028d0ebe6036d3d86112de2edca5cddf10f16eb8bd22. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBLFP2440581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0a72b883ed308cd6abe5c11a874268ed728f55e28deeb70501836158425a88. 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/FR10S2439213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce32a47d6285efbced93922012e2f925f67d50a3ba9cb4bc3de4fd0adbda79b. 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/QMBZ92470072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4105c38420fcc9135cd4f53a373263b85dddf64d50465c196a9d109ce57e70. 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/QM6MZ2483135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d700bd53c6f7635e7137571052bcb1514f440d1e522d885813177e6a214df4. 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/QM6MZ2483136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8606e241d561d6c20ec831ec1ba81df60e14c1249fd6265bd86380708aa8383. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QM6MZ2483137.