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 0xca6a16b4d32dddc0f1ca22a9f954b6226a7be84ae27a7446f8842e25f309a408. 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/e4e96394-7c84-4725-97ea-3c10c21c2a07.json and https://artists.proofprofile.net/proofs/artist/e4e96394-7c84-4725-97ea-3c10c21c2a07.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 0xc15d415a4b2268369e10a79bb887823e7badb6979d5861ec4ddf010bca8f9439. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBUM70910628.
Zimmer: "Gladiator" - Music from the Motion Picture: The Battle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d36887dffb48f769e3694ccdb31b34a6473ef4ac26304bf6809c04db88c30a. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GBUM70910636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dd0f9013b6aa3e3a2ae7e62a7bd896db575bb68b5b0503fddc6923249c8186. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBUM70910638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12493c3bbb0a2c3bf4fe9b6b0017091accac7e5ee57c1288bf0d87f2a1b117e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBUM70910640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d14a55e7080c7e2b55c7d0de716555f1a3e587eade1c7ceeaca0aa4aa6f098b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBUM71101132.
God Save The King (British National Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1744cd2f65b4de7e2cadad46e52f0414e1575cbe2d1803074f77ad65bcede2. 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/GBUM71101219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000aa2512783c7f1f10f1a776f129623a48d5fa57ded80500c95354709f5223. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GBUM71101220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d14a55e7080c7e2b55c7d0de716555f1a3e587eade1c7ceeaca0aa4aa6f098b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBUM71101132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1744cd2f65b4de7e2cadad46e52f0414e1575cbe2d1803074f77ad65bcede2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBUM71101219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550690c21ad681afe09ab37f68ab229dcc45b3e12710e1dffb67087a3ce3e98f. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GB8XC1418691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d6526b13b2b6ee0d5d38bfd06cb85d749963159a6307bc21ce835ce4659059. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GB8XC1418699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2663f165f5b29dc2fb44ef906983b49b8750d950e20c98596766ca4bd3795f69. 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/GB8XC1418700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bc3eeabdbd0a3a67531966e8f6c611bdb486e4f0c8d2e30b339f1ba7951449. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GB8XC1418709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e0587c0e6f4fdbce891cf33cc34bf124eeaef4fa12929a0309750f945e99d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GB8XC1418717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65991a69e5e93c4203c340aed32fdda5ba0db48cfd11135b58f771b1d659703. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GB8XC1418718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da6f411b8b1a51006b6b0b34f7d5137c0edaf087eecdac4ea05e5e647cf9a91. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/GBUM70910635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe759f199070e673074db9186e49f6ab21bd9433ef417c377fb1d1232c25a9cfe. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/GBUM71101216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7a75b0264ae437dad492e2582ceabb182ef37e731f45395888288481f9c9ba. 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/GBUM70910631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1744cd2f65b4de7e2cadad46e52f0414e1575cbe2d1803074f77ad65bcede2. 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/GBUM71101219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a257ce792844f3bd113087bc89c0e441979c6ad60a6a447b1f7b9a857a70478. 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/GBUM70910633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d74c55731b6127ea681e49070291e5812f6dc3ec42dbf105f53ff7c8d87b0e. 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/GBUM71101224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12493c3bbb0a2c3bf4fe9b6b0017091accac7e5ee57c1288bf0d87f2a1b117e. 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/GBUM70910640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8000aa2512783c7f1f10f1a776f129623a48d5fa57ded80500c95354709f5223. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBUM71101220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b0cc118f070c870f34b34f19fbcf0c59843570d2fbaf965802ea36fd49d2bf. 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/GBUM71101223.
Music for the Royal Fireworks: La Réjouissance
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af6c148bbdc9c58a08e7ef14896410d7676e98a35f9ba5a448178fb7550e2b0. 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/GBUM71101134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020aacb3f3c6894d578f1d26323bc49c3e3308ecf587c4493590ad0a4c21cf6c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBUM71101000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d14a55e7080c7e2b55c7d0de716555f1a3e587eade1c7ceeaca0aa4aa6f098b. 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/GBUM71101132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12493c3bbb0a2c3bf4fe9b6b0017091accac7e5ee57c1288bf0d87f2a1b117e. 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/GBUM70910640.
Music for the Royal Fireworks: Suite HWV 351 - Arr. Eyton: La Réjouissance