Pierre Job known professionnally as Hector Zazou (11 July 1948 – 8 September 2008) was a French composer, arranger and record producer who collaborated with an international array of singers, inviting
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 0xd016dad2e4f5c1fadd7bd76129ff29f52315c059759b4898e3a6a1e5bcde9e05. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa135adc-2515-4aea-adc0-17632b82166a.json and https://artists.proofprofile.net/proofs/artist/aa135adc-2515-4aea-adc0-17632b82166a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Geographies (Made to Measure, Vol.5) [Remastered]
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 0x9d29827e14fec335e7a34f4a339ae6a19276cb7cf1094abf286a32926951089e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:24:10Z), 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/FRX220300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041c6c0b3950ea2bbf59f2ca41fcb1972aec9d1bf1a392b5988fe8cb14b06734. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:10:45Z), 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/FR05G0750050.
Geographies (Made to Measure, Vol. 5) [Remastered]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd535153e5bd79e2c86a62432d7999c59c6a0765f64d771623b84b20837c7f04b. 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/ITF700915101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2b047d5191212ee6199bee58ece4287aa93a9706d1202fe05053bfdd132e25. 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/ITF700915109.
Pladne Doyde (feat. Jivan Gasparyan, Daniel Spassov, Milen Ivanov, Janne Strömstedt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baf871fb886f372c6fc0c016c790581beea3271915b6d210b047875c5e2a410. 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/USQY51428638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b2e25b74a79195f624647971c6464712721ea85f43f17002d18e4629066381. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/DELM41306168.
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 0x138676c5cbe763867eb2c63de2748d0d8daed197091c1bb6377d37f3a5d0d0d1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CAOPL2390062.
Lazaritsa (feat. Carlos Nunez, Zoltan Lantos, Bill Frisell, Minna Raskinen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e690ea547126e882f0c5d38d516ef0f128b8c30d2ff162b2dd89ff2ac32e24. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USQY51428633.
Razvivay, Dobro (feat. Andrea Guzzoletti, Zoltan Lantos, Antoni Donchev, Diva Reka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18deb9d9b942e2c5ce7c9829543d43b3f8a15b48e8d190d3ec0e1e458a4fb942. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), 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/USQY51428634.
Balno Li Ti E, Sino Ljo (feat. Nils Petter Molvær, Ryuichi Sakamoto, Roberto Cechetto, Cecilia Chailly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb369f649040ebbd1cce903cf327608a468e19419000f0bed252fb3f40430c762. 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/USQY51428635.
Gospodi, Pomiluy (feat. Laurie Anderson, Kostadin Gentchev, Cecilia Chailly, Radosvet Kukudov)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3081a78abb02d2e09f8f4c9cd9570dbd31013113a63e3b6aa81c67f40f01e1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USQY51428636.
Dostoino Est (feat. Robert Fripp, Mehdi Haddab, Zoltan Lantos, Kaushiki Chakrabarty)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be6f2410cef42d5d0ac165971577d24d00d3a2e1f2c903347f7dd0ae04bbcd5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USQY51428639.
Minka (feat. Jivan Gasparyan, Zoltan Lantos, Antoni Donchev, Cecilia Chailly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263cbc14c031cf878eea85a3685b9cda6ad59ec4f91be7e1bcbd40c5425e65b8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USQY51428642.