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 0xc3fdbc505076c61e9a605f09080db23cfb40d39dc5b732adfec47af6662717e7. 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/027cb9c9-892b-4e0e-b92b-2796f1873aa3.json and https://artists.proofprofile.net/proofs/artist/027cb9c9-892b-4e0e-b92b-2796f1873aa3.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 0x933132f05c73b726127a078f3b3b023844958cb1389c8c745cc3bc94e3d493db. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/FR0IW0300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c470204d7f74c80377a24549fed58b8a20d421597f180e36a44080030093004. 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/FR0IW0500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff92f06d248896f108b9a3c83ca6b04a54cbb5311043d0956852b003060e3af. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/FR0IW0500040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9623136a4af751ac49becce1df20c12e2de31af736b7cf2b91413e6f65490eb7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S1522681.
Peyo (feat. Anaïs Kaël, Olivia Kryger) [Conte musical]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9b5a4c0458dabf3c1e25c415da258fc377e9376b1b411cc8b7704590393781. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR0IW1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d87398e7ad438853e0e1fc980a448654d9eb3d70d31f6ed1913b880320a7be. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/FR0IW1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9b5a4c0458dabf3c1e25c415da258fc377e9376b1b411cc8b7704590393781. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/FR0IW1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7b0a88dcbf00ac289a7ebbf69e5c8e8895956e175015525bcc575fc552960c. 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/FR0IW1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01396d87fb7b60606cd7de66a7054f14db77344147a564a3aa9eeab49810545d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR0IW1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da5cb05eaaa5076245e2a91315d94a6312f70a95a28c3675ce670d1f5de77d6. 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/FR0IW1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa2b52a538f7e35eb640c07c1c12b3bf093fedf6155089eb49906820bb60e19. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR0IW2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea872c8089b367e08145ad307ec1e809651df5ff67b3e002d5dd57b97b1b557b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/FR0IW2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b81805f081efeecc60687623cfcf7acaafd97b0ca2750a7818a5f2cc21550c. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FR0IW2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41cfcf7664e206720c6c752d688337ed19595efe2060734d01f85a3e82588a4. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/FR59R2557161.