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 0xc51b118a0de3cc7247a4a780adb008ed290f75ba23ead471771f1ab50ccdb91a. 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/894b326b-88eb-4e25-aad0-f133b9d6a28c.json and https://artists.proofprofile.net/proofs/artist/894b326b-88eb-4e25-aad0-f133b9d6a28c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
23 minutes spécial X-Men (Mixed by DJ Mel-A)
The Spot presents: Visual EP Series Number Two
#Rap nouvelle frappe (La playlist 100% Rap français)
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 0x32abb9b9a161acbae44e67bd8fa85dfc004e538d42b79ff0b398b5d132bbc6dc. 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/FRX871564741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5982d935226817fd60b2db4a3c9d47bcc67c7744aef00e2dac27363b527b04d. 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/FR8GV1600580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36f57a90040cc8a840fd6a9e8dde127c81a799b1810ea653658ff18c37da618. 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/FR8GV1600660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a173753cee7680c8e222bd61d0652f05c98ef248255ac2da329711ded09451. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FR8GV1600590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2182f0e0b05094ce395dfea900cb65990a326c3fbc994b0aa8790647fccca83d. 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/FR8GV1600630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d61a1887bf6167a90d13d7021982b4b30e42c31b054e09ee0947046276f3b2. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/FR8GV1600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab79e822c0e53ed23b3e51ba6c4a8e6a0a52119e2911063aaaf54f9b1c5ddd6. 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/FRX871564742.
Classics radio spécial rap français, Vol. 1 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef3efb6a79f395c50acb1c531cc7d67be08576357ba249f8ba2d426920087d2. 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/FR8GV1922820.
Freestyle original bombattak 1997 - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d897945696dad3b335f59e5ba362d06928a8e02e41ff1e1974a09aff45c164. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FR8GV1922830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf7b054bba415c05793f03138b6c16bf1f4845d29f62a675b2ef2819e158add. 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/FR8GV1922840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860e2771a7eed9d73f280313c8a9bd2375fa968cd122b430fbd9af33292e6642. 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/FR8GV1922910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7c2809c42564c1ee48bf6041c762c1c7d0737565c106815fcf0bb2c67dd284. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/FR8GV1600690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d9a7229c2b518b08ecb3036c922c234a42d7ddaae12929ec3dead30b16cf3. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FR8GV1600560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7c2809c42564c1ee48bf6041c762c1c7d0737565c106815fcf0bb2c67dd284. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/FR8GV1600690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d9a7229c2b518b08ecb3036c922c234a42d7ddaae12929ec3dead30b16cf3. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/FR8GV1600560.