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 0xac01492b325011870b2a72a314eb23090fc6fadb7e91cbe069494fd67b071785. 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/5538b206-1951-4e23-ac5f-e4db323e7591.json and https://artists.proofprofile.net/proofs/artist/5538b206-1951-4e23-ac5f-e4db323e7591.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 0x446e5b1ad4142a6cb700a78db885e7f99b5936d81b02d37dfb7a1174b4e3d1f4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAGK2266569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f97e482e8a4f32aaca5bbb773dd796b32eea563fb360a5b896afbc9a2f7476. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TCAGK2266585.
Speedlist - Artlist Slowed & Reverb Songs Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b992e82207c06d35bf0de7541e46407cf5358d47ad2eca822a99cc66f27033. 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/IL6652306715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e556237c970808944c25462cdd4670328638ee0ca934f6c7483ee3e68e9c88b. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/IL6652306716.
Hamefakedet - Dismissed (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71695dba63fe325df5766567796e4326b524b615ffa9ac6eed50c2c371e7b26. 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/IL7112102212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa491b350afa3bcbc2469f982da2dc93ac054c100b5a8a9ab2bf1988c9f4b698a. 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/IL7112102213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccc982875e89bb47cc08f1fd0e63fd6c051a29b2c0cb05192d96d42db212e2e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/IL7112102214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fd7b842d90f7e4a2985b2e087c2cf618e239476b677f79e7d6f411487ea226. 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/IL7112102137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73740aa28f595f06a4b78de4ab2c9d3716b45d8d3e84685077d89f19b10e5d3. 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/IL7112102216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae89f01eda252b5001021da0df103f80059f440d0d8e82060586db388655a678. 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/IL7112102217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56c81605c6e853b07395d2d523b04df2f185ec77845aaa8de5e094bece6ef3a. 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/IL7112102218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347c5dcafc60be154b4d279c3e5a7e6021699cbffff5b43fbeac7877fcab72c5. 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/IL7112102219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6782d55630002b102adda5b84f4b5a014f2605bd11e2c5b821b69dc6e3a02e3b. 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/IL7112102220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c792aba4c3f3b37091ce8d1f1940daf40a9019a8af51c8f220a8b5050c20db. 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/IL7112102221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b0032597d90c61f72a43835ab30719e44de4f1f15d5b29a364452d553ef8d6. 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/IL7112102222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096034939ff5fde8536aed1ca37927dfbc676afb6004571772e606ad85e17e2d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/IL7112102477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fd7b842d90f7e4a2985b2e087c2cf618e239476b677f79e7d6f411487ea226. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/IL7112102137.