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 0x97c7c5f669efdd90b4f9420e79608b140f1b53e9cb74faa7d1adfe265a868336. 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/f74a12bf-af0c-493c-8d80-990c7c449a7f.json and https://artists.proofprofile.net/proofs/artist/f74a12bf-af0c-493c-8d80-990c7c449a7f.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 0x8e0ee039d6983be5dd08ba2c0b0451be396993bbdc6d5aa48107e27435eb4f84. Chain 2 (Bitcoin): anchored in block 957626 (2026-07-11T23:22:04Z), 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/GBSMU7561610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55f21a2a7c9ff3274f9f09e3919425e0ca99fbdd18d10181d034683e9f1edbe. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/GBSMU8119559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e9966a9f06ec9be89db4e708b82bdd531b74e587a6c9d6bf6b3e4b1f9dc8b. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CLKT22003395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0ee039d6983be5dd08ba2c0b0451be396993bbdc6d5aa48107e27435eb4f84. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GBSMU7561610.
Confío En Tus Amigos Conoce A Estoy Bien
Confío en Tus Amigos Conoce a Estoy Bien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d53a150b7e6bbe14a50570776597178565469b0a43697c3d77732d8cc7ef2f. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/CLKT22103930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f5a26300b6a7a73eca912d13e027ae4d1308579ea22f164e338571e13c5171. 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/CLKT22103929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc213edb14251aa63904392f27cd46098ba638e80673e2bd6a6fcf04fdfc17cbb. 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/CLKT22103928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b39cef7e604ed1e15d64f1eb071d3853f26ec34831d0e1b957dc4a74e2c2e1. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/CLKT22103927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f3d32f0d3c05039ab37408ab173fe476713b774d689e9be43e997c9a85fa08. 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/CLKT22103924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9298127a8b51362dfb5156c1ed84002263a038c574ea6717d61449e9d08547f8. 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/CLKT22103931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db98fe26a6eb72da72365627662dbfe330b0a1a165142a69dc0daa4183bb924. 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/QMFMF2314899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf490d2fa491442d8586231edf6b9ad97a01510fe7da0613ed99eb639184352d4. 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/QMFMF2314904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f198db75b28e876c968ce51ad16d59d4f862489d6de434f05f6359b1d74ffc. 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/QM4TW2350569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d19659795f4524ceb1f5aa46bab17e3150a4370cc1cd3ee27050b9057a748. 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/QM4TW2350595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95eec082076069d84bb4ee68993dd78b0c55617f28391162c71e3a7d59cc9ac. 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/QMDA72352386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188a7197913b24e537266cb5ad2f15f0cd6666eb10fe14009b3b6f98ceaa88ea. 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/QMDA72352401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadaf626df87665d81616799976f8c6244f007da6b02096996e4db41fe587db00. 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/QMFMF2314908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1153039fcf2796886845f2cd85b2c2eeb74fb6ea16527464ca50f98c6e626226. 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/QMFMF2314914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4de26966c3e4b50bbeaa0e9ac7560236ca92f9d3498ea2991e18184f6fe22c0. 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/QMFMF2314916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330e33823dd196c43cdc976a284adabd10ca42b18e613899ed64afc376d8780. 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/QMFMF2314918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d195778754e6dfcf76e36eec5f24e4439978a1a1095952c891bc0fd37fff3d0. 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/QMFMF2314920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a89bc413ed9a8f2312250130f180721c1e279259c3d01cba906f21650f92b09. 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/QM6P42377870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76230eb0815b863530a363ca8aa7231871de7e7fffed66031875f5949da2629a. 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/QM6P42377875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96bd2d6bae4a405cd05ab794e0f3cb506bda4807a714a4e91583369bfa01b62. 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/QMFMF2314929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d437667a5d6711e0ad9ec681fcec6dd19820dea3c3bc6b05343d52a8df0d01. 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/QMFMF2314932.