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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6288826c95c1aaa448c2f28a9b76ac3443e60c4c7b35972e62d41441c04c21e4. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e31d0f1-8e2b-491b-b606-4613c7a30626.json and https://artists.proofprofile.net/proofs/artist/1e31d0f1-8e2b-491b-b606-4613c7a30626.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tous ces mots terribles (Hommage à François Béranger)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0157c0cb59c7a4d7562eee37a9a13aa554b437ad4e77e8fe6a36d569e7bd3cf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZGE0800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa185ff25e4830b552655478e867b811f1c99f07b2a5ba83d4fd9c7f9e3545070. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZGE0800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1d44a9f89aa05f2e10b6970385cb6f44953bd0bca8a358fa880ba01ff15dec. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRZGE0800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa13fccb9f7e1b5e8fe59dc5d40135c153ac3e1a22c3c0c147fca075980efc7f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRZGE0800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1788047363e5b0af083e2c58f4d843e8eac2c4ddacba1ea53a6af737bac976. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRZGE0800003.
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
Le fou du village - Version remasterisée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c0ebf0574db148db2d58db389054368467e57da718bbfe3cfdae09c2ee4efb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR19X1100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3dfccbf9494ba131abe07d78c1f6e155f4130d12e1f2fedcf3f9d8eff23856. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR19X1100068.
L'auberge du chat qui pète - Version remasterisée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8310c8c49e6390c88be157ec4bbdf6eaecc188b487b4eb49935d9ca7496d86b8. 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/FR19X1100081.
Pom pom pom frites - Version remasterisée
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8d4c56130bbd01adef4d6112306b645ee0471ec845949fbb0459a395fc947b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR19X1100082.
Supplique de deux frères claustrophobes - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffade557adccf80b334a830afd5a486a3632cf7cc8e1cf85882652857fdf15e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR6V81004268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9e7bfed36dbdfb357b85aec46189b3cc26e69681e26dfcf83d46a4a39ecf83. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FR6V81004278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2408e742ae5f22d6eae6f1272619c2aa313104eab3ed233fa0bcdaff3c7908. 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/FR19X0700070.
Des moustaches à la Nietzsche (en duo avec Emily loizeau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de55900db453b844aba26d9b421eb3885416c05b8baa3219ac3756da4e88a18. 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/FR19X0700076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d30a9c052fc1eb310054005b20f9a3cfa92d64156075f66c8d4e17df601bc7. 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/FR19X0700081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8bb26e3e7f51976036ce77cf938b314bef2d692b3dd4baf529703aa570fa66. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR19X0700069.