Mario Reyes Castillo (1926–2017) was a Mexican printmaker, painter and sculptor best known for his work with the Taller Libre de Grabado Mario Reyes, which he founded in 1965. This workshop has collab
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 0x60e05820813c87e6eff5da577dd750b162a91ef85b1c63c106367a34447e5e39. 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/d1135b2d-2be8-40bc-a273-3db61baa5e98.json and https://artists.proofprofile.net/proofs/artist/d1135b2d-2be8-40bc-a273-3db61baa5e98.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 0x67b94902689032795c48902fdbaf9c9be533eaa34a3ccd11e0ac437abfc5befd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDQH2141292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bebad80d991e70cca227c03b9a712b383d555177abc56829c9a0e178998b8f8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZDQH2141294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4869f77b13649e0f22c51c6e48124438d4b26245a01a960563aa68749a3196e. 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/QZDQH2141295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a3d1e3cac2e59ffa0eb80c6a38f6f2ef2ccda6eb8209fd4fa32c3638f559b6. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZDQH2141296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fc57faace81c21e44dffe82b02e02b856864026fe7d24a50b443641017ca32. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:09:50Z), 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/QZDQH2141303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653908c09c74a46ff9ac0edc9a4e1ce786a108a56ae2c3b09c56f08b8264facd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDQH2141304.
The Gipsy Man Sings From The Middle East (India Edition)
The Gipsy Man Canta desde el Medio Oriente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c6d1f740e86125946dfbd3fec4302f6a1ab569ef7a722ff48017a8fdf660b5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR9W12148940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4eed0a9f934e83c116af1ae7e9a965b3b535e093051932b1fd148b4182969a. 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/FR9W12148942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7256179cc76eaec77dc817dd2b7739bdd8138b303536c8ffe716f4a2163226. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR9W12148944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480a0d752c6617521f9bdbed93e5951b3a3a3203bb9747d5eb650038bd6636f1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FR9W12148943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a8c63d479d7094e890019c87111a6aa3fcf2786f723892dcf43a9cc4184fe1. 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/FR9W12317186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26faf6c7ea64e1c8296cbf0adbca5165d00430e6f93b2692c7cb5b84c0c3ec15. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9W12148946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf51f1a1a27e64ab863c234039c1fa7fb87f0bdb1a95b9fe854b8ddb9397ab8. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:27Z), 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/FR9W12248067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f09484eaabb4d905efd1e322b3f9f6f85ac26bce2fdf9ba5e8c049710df5e4e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FR9W12248068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5008ff4698ddb1aecd2938c2beb5d698ab14fa16d96321820065fe8fc0b64e19. 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/ITZ040500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5008ff4698ddb1aecd2938c2beb5d698ab14fa16d96321820065fe8fc0b64e19. 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/ITZ040500140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5008ff4698ddb1aecd2938c2beb5d698ab14fa16d96321820065fe8fc0b64e19. 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/ITZ040500140.