Man Ray (born Emmanuel Radnitzky; August 27, 1890 – November 18, 1976) was an American-born, French-naturalized visual artist who spent most of his career in Paris. He was a significant contributor to
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 0x1a713536abeec8e2687c959387d39c84e62cc15ff694324713ab82c3c35d5a82. 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/2b0c7824-f185-4d7e-8fbd-adab7ed83637.json and https://artists.proofprofile.net/proofs/artist/2b0c7824-f185-4d7e-8fbd-adab7ed83637.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 0x0478d464cbf5c7629acec8053cb62a9f15293bc78006959dda4257e2e646930b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARF100300794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4877dba9098ded713670b5415f0e9a417ee13169c1d7d0c4b5e30f225bdb9bc3. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/ARAQR1800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614bfbfc754640615c6b8cd0b121f2c321a6984644865c371d66a665f087ab6e. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ARAQR1800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb4561b15b002ebf6a8dae81a6ea3e8cef91d8e60fce9f4a9379cb42b597a35. 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/ARAQR1800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8daa69d2c49858c130e860aa386b5f4daa24bbd63919c39bd2a862c39d2fcf4. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/ARAQR1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fdb2c48488498346c7dc0245c075a3e619420069142a7367444283f1358f0f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ARAQR1800031.
Por Que No Me Mirás? - 2020 Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7168fe0b70f7ce7d7445308666933fa417445422a43c4591a15c9056fa3f3424. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ARAQR1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb32cf9f4a8105a559fcb047bc0d53c3cc00bda54076f42c0843b0f528c268ef. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/ARAQR1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5292890a2fa22535b32ad5f0f2d171c45cbd639db223a7068c0013c4e446a1d. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/ARF049501916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0622867881cc44efd9b2c9c88bc9d7ac71ca5d113223be029cb728a723b1532d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ARF049501927.
Aseguebú (Acústico en Vivo) (2020 Remasterizado)
Sola en los Bares (Acústico en Vivo) [2020 Remasterizado]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78ac07916b70534d5c1cd2f7b1668b0886da95b3609d9dae2072075ab554ee1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ARAQR1800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43541d9af2ca21a0f3938674e132e9e504fbccc77369b2544b2097325d66a5ce. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ARF049602888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d4c5b7b427dd01d6b3da7fec67b31f5dd776b526b48f3b753a57ee6c607d10. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/AR8TN2200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cea0a1e25b47e7f0d0244cbc89587d5edb41dc54199d321ddc0793d59f38e99. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/ARF109902784.
Cinco Décadas de Rock Argentino: Tercera Década 1986 - 1996
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe2892de49aacb1620b342d48dcd59acf73c45c2e5e6ba504c761ecaa7c7d72. 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/ARF109500365.