Erwan Séguillon (; born 1974), better known as R.wan (a derivative of his given name), is a French singer, songwriterRFI: R.Wan, paisible pirate du rap France-Culture: R. Wan met Paris en bouteille a
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 0xd08506c1d13cdd1dfff9314c995e5ac6edb8248c0b5b87fcd3ebbba2e88ae942. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/240fdcb1-f898-4a95-be40-47c6ce78d127.json and https://artists.proofprofile.net/proofs/artist/240fdcb1-f898-4a95-be40-47c6ce78d127.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0156c6010f1952d19bf4a0d64c2bc3c2edf2e81ee4b36e85f3aef477881d68f4. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/FR5R00911582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437ac7d15909be03fe98f5e85fcc07554d07598e10e7d0b8f71332e72fefda1d. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/FR9W10800347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb687f66fc5bd434b19837a5badd146cf326814a3c0d1d65a237bb895981dd7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W10800351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7249c3580e499a687f707ed27661fd8c9f164f4ca1cbefaef7328b1fd4c753. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR6F31101530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7e2cc9cb06664bd281260b33c5feb9f05f9b5f83d171414f1ffe685367939a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR5R00911343.
Les 4 Accords Toltèques (DJ Tagada Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e841ed6b01ab2b137be54722f38d28903afaac8534ee56289a7c17f59142aa9. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR5R02500582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfe70af7cc228e8b4f6dbf9a4986e4c26594018e2af99a639ee90b4dde89d8b. 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/FR9W10911144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3009ca3f1f133cabc9435553a6865d08fd1c581f7c65b3912a3bef6084bc2b. 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/FR9W10911145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f679cb67b01366333ba11aefb2f0572ddf52c00fa0fb9ab265df2f91228ccc0. 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/FR9W10911146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0bb1cc3e59048e0fb7bdc641e2cbd187c7bb69a32d9aa96d2ca48e2e2c415. 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/FR9W10911147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3241fe3e468837258c565121ff1ed3a41f6f5bff9bc18451849d38bf7e1f48f7. 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/FR9W10911148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f93154aa0aaf99b7431632bd28b6610e7a04f8312b05cf8eeacca51b0a467a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR9W10911152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79549fa75b224e57aad826509e08aa39a1ec4e926066ce444f26110d6c082a23. 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/FR9W10911153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28599af22f2f1d0b180c21b55fd289309013bfc911bbdfa28e61a7ca2e191aff. 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/FR9W10911155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8854514ea3b9cb95e47782550ce24ac8588dd693b13c1f49c4dfef1d164c5b. 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/FR9W10911156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ccbe88ba9a80fc2fd22c65fc37911d753d783ce1b598d1f6ab253280f56e50. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W10911157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1a4879c62574b2d8783dd1dedf2ab48da105fc1932ea94986e70b68f0e466c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FR9W10911158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eb4a4d4b6b7244bff53dd1aae4ce360ea9f67fb6def5743e7076ecaf16fd1c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FR9W10911151.
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 0x5bf4137a5c78fd96d5cd86019e827a57d7e66977e06269b9d07d9b758811a44f. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FR9W10911149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b614ec6a2da6148eb24097afb48844a121ccf3c7243fb09e6acf056146f95a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/FR9W10911150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd92c13e995e4fdc57cf6fa0b983a30611733d2b597ee57ecc2dd36a911fb3e1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR9W10911154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8262ce28f67b125d940586199f021e823185a98127227171feb064ca79d9b1. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR9W10911159.