The Touré-Raichel Collective was a musical group led by Malian singer and guitarist Vieux Farka Touré and Israeli singer and pianist Idan Raichel. The group's debut album, The Tel Aviv Session, was re
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 0x47b415a5211eb07ea5085375e6f53e958df595742fdbc9f5094990ff429e849e. 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/b0ee5fa8-f630-4dd5-b520-b326d8f087e9.json and https://artists.proofprofile.net/proofs/artist/b0ee5fa8-f630-4dd5-b520-b326d8f087e9.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 0x1fe14f40dbf9e7c32a23b5cac3c11e49c642a4b7f2057f97eb8ec3e193bdd110. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GB5CD1202202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ec5bcc5fe3463fbbf2ac190d2029bc40accd227a4080d82826f2a503f6f0ad. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GB5CD1202206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe14f40dbf9e7c32a23b5cac3c11e49c642a4b7f2057f97eb8ec3e193bdd110. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GB5CD1202202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b562ce6f2f4ac513f78049077a675e8ed927b45d76d0625a45aaeab6d801dd. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GB5CD1202208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989a5be8f047a09d99ad2ee52f297a7e887e51e1815297cececa41a5ccee181e. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GB5CD1202210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f9df08ee0bf382886830d6e53d3e5c4ebc45885fd8036fdba3ca9b292ed6c8. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/GB5CD1202211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfc13653c0d3b2ed610093102af88c16615015fa5ff0bf29e3e09e003683758. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GB5CD1403206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b943438e710a65d475f486d80e3105625b97f4a3fbadd11440e8788329c706. 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/GB5CD1403208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a146849cc8186dc6d5897b7a1ac82c714f4af47c78428b00107157ea275931. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GB5CD1403210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c0e13415f80568a1fe385ae5ed6817aa1185b43290b7802f82594930f50014. 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/GB5CD1403212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55968f3bc791aa75cb6f3dc066050528920349a2c0d8162c72bcfb4f376e8b8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB5CD1403214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b7b3320f397ade183049a51969d40af059db7008ef0e8b65262f6b5f01525b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB5CD1403201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc72c95479697f120d0099db3211e916056eb657df2761baa3a1f3d9bfa7c4e9. 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/GB5CD1403203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019ba28c3c9fdda992f22c17dfcf0ae1c4c15db3c47a631dce5055fe33040187. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GB5CD1403209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6edbe3895362888ab4045c9247ea93dd7f6d9a88ae750ce10870bf89406c5b. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GB5CD1403211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b8cbe8ea80214d0cf87a530db1d8cc27ff3e0786fc134b16958fbb1107b27. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GB5CD1403213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b7b3320f397ade183049a51969d40af059db7008ef0e8b65262f6b5f01525b. 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/GB5CD1403201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5873d5c90b694064bfbee0fea2f3eb8274a7ac07633a567577ed29497b0afa1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GB5CD1403204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb38adbcbd59f0419fa181e599b811383c95730dadd2c4d663d9c4dfb058e33f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB5CD1403207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6edbe3895362888ab4045c9247ea93dd7f6d9a88ae750ce10870bf89406c5b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GB5CD1403211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30b8cbe8ea80214d0cf87a530db1d8cc27ff3e0786fc134b16958fbb1107b27. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GB5CD1403213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb38adbcbd59f0419fa181e599b811383c95730dadd2c4d663d9c4dfb058e33f. 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/GB5CD1403207.