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 0x542336d1ec0d3859fd105da0aa72e3170cee9f3592ed47eb013b1a84153c904e. 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/a20d9641-1c77-4b6a-8aa2-aa066c1ca32b.json and https://artists.proofprofile.net/proofs/artist/a20d9641-1c77-4b6a-8aa2-aa066c1ca32b.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 0xb878e37a0e32852fbc116b8b1d5a78a1f465842e78e7c29d626a0f90bf947ee8. 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/FR6Z72200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f3e41057ba072c81a640f6d02e90d167a3054f87831a19ea325c7330b69934. 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/FR6Z71800196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fdf825b2a15f4f20e66d092f560306b66837756e62a7aebf11fa74247e7cb2. 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/FR6Z71800215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465155020e342a657c5dfd6eb32cff634a1acd583af83d23f7645608fc9ca3d2. 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/FR6Z71800217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af60915204ecc93cb317a49506e51922ff10612575f3250105a26120676d8a4. 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/FR6Z71800219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5616b604f5a5e6a2b37119b4d8a347e1087c08f9fd734b50ab81e92a47ca6b42. 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/FR6Z71800225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77db16e651967941ae794afbf3a310d5b672e1c4e67e3ad116f6207e2b21e19e. 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/FR6Z71600138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf5031e9bc0daff251ac730b151c88c3c766a749144442dc4b5d74a03ef6643. 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/FR6Z72000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f3e41057ba072c81a640f6d02e90d167a3054f87831a19ea325c7330b69934. 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/FR6Z71800196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77abda90a583e5e76c943a3fbc48f20f7f8111c838e65ed3b783d7ffb41675ee. 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/FR4EO2200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ea0bd00e01c106ab6ab286c4a15672de1a981589906b36d42379ae1485b0e7. 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/FR4EO2200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6518f93f151d828cf60a6a777c47b5f1087ea61d5e75e44c3a76ab30552a719. 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/FR4EO2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ed30fc14373bacb3375e72d29fcf0f4bf1aa38cae03b703caa45737cdda280. 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/FR4EO2200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd262724c399c152d2e2575ae36070054a6a2db909983eedb211f32c157c879d. 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/FR4EO2200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb07bb16020fc523d341977bdaab3829b66f8d07785bb06758367b1c935f93. 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/FR4EO2200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa864a6457c7df7ee3095ee6de55763808dbd5e0ed9ca2302d73829843de7dd06. 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/FR4EO1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95395d5607beeb058db0ede647553e9b32c6ba9c82d48d9a657bb3e165e6c6ce. 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/FR4EO1900028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af8d37c6ad87ad12ded5c47ce587f3a773316e2b37a97ca315038797a1193a5. 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/FR4EO1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc448b2fe32ec93026d443b53b88a6d1811f21030fb9b315a58dec7443dcd8ce5. 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/FR4EO1900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf78661e06709bb4ba595f33e2d749c53da7df5bdb3886da2cc5145133cd1256. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR4EO1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f54a6fd2a633872b6364541cd6b7b6b16192cbf681a82010f9b80d18a437bae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR4EO1900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc03f6722a13b83456cf4cb71d7ba6610f6d72dcca7e8b141553cf2ca7897cbe. 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/FR4EO1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9f12f7be031f8c7157ff344e2c9deb4c8288f8c408ea754de219ffa126a92c. 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/GBUM72206147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e4e94f5ec78a9b55cd7d9d926d81074132e77c8eefeacaea91f53fc143493a. 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/GBUM72207519.
La vie est belle (A Tony Allen Celebration)
Emile Omar présente Brassens et les copains d'accords
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18d9d1b558536ace328dc2e42cf1e654d10618776d02423b0971b292d47cfb9. 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/DEZ651012332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18de908ff0fa6954e232129cbc785c2a49e6db7bd61a25c738356876e7b0f3e7. 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/FR4EO2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225e091474c19d09729cb93a234e56a66008f3027b00e6d2d03d24b2e099bb53. 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/FR4EO2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f679329392f09f2e055f79cda37e9d818b730bf5d0c408972a70f4bc214f6af. 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/FR4EO1700076.
De l'air dans les mots (Chansons pour pas grands)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7ec8f525a9e249521fbac785bc9a4dd7701417d95c4bea5fb4804edf7e70a1. 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/FR05P2300412.
Bwè Dlo - Djeuhdjoah & Lieutenant Nicholson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558d15e37e27e61d96ca4fb17ef82677b01c1b4a56384f542d60c2560fe43aca. 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/FR4EO2000081.
Heavenly Sweetness 15th Anniversary - Tropical
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b053794dc09921be1ede38f754c794f843cd77bb60435d995d841c8bcb3bce7. 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/FR4EO1600054.