Ray Perez (January 25, 1939 – March 12, 2013) was an American professional boxer who competed from 1958 to 1970. As an amateur, he competed in the men's flyweight event at the 1956 Summer Olympics. He
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 0x5bf0b752af872bab5d84e939e638d22d5c457ce8d0a867ade1dd5c5c69c4c4a6. 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/e6bc06d3-0fb4-4f2a-89d2-0ff59f6c3320.json and https://artists.proofprofile.net/proofs/artist/e6bc06d3-0fb4-4f2a-89d2-0ff59f6c3320.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 0x36b7da5330477d891e526cf55e32b04add614c0d5bf6b61b509ee3f07eb85fcd. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QMBZ92274890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37044c7c30d4368fd7daf59f8c90714ac2cc35f532dacd2d51d387b83ea0341a. 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/QM4TW2376050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bb069f1eeab5105e1155a6e532a6ddb08fc2056efd9c78e29b74e4e7ef8d9d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QMBZ92297516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641a7ccdab5638dff9351fb6608fd7609ddfc0de80b8e9e19c1d21c1bac72bd3. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QMBZ92273659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49916df26af007236e9f113325270e314b3df1f37f7f7274f090e5bce8118f8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QMBZ92274889.
Phidias Presenta a Ray Pérez y su Mae Mae
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc7e3d9db921f43877664fd321625a3faeb938c672a38267214c90b4e1e2a4d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QMBZ92297511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c3f13f31ac5285708095e48f59ffbbfce5245299a1694beccadec7c8f4bf14. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QMDA62202519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381f04762f1eba0bea2a2bd66e5e435f0c530478ca22b9dd029cb04889afbc31. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USZZR0912522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c38484dd2b7cccd3387e9b495493ad3426b4f7c1f82e4cc2186ac458da2041e. 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/USZZR0912528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ea34b65a6e76d9a530a3558a937bcf28330008cbd372d02f64817272c6c5b0. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USZZR0912506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3299c1ec6028164ded4587aaad81c99a6c92971d6f9e30609e76f4fae660f09e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/USZZR0912516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7695f58a3d4033c833566d49b85669c350911b696286cfcd9eaa0eb7ceab59. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/QMFME2380075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445fc62594d6f57f4cead35858d997b8127c521995f6bd60df50c2bea26eace3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/COC011530565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb773bf1e1b460de6a7ff31e1d49354c3b8172c2e7d5638040c3ee511c60a843c. 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/COC011530571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe704ac3b6b0c19dac3e3fa9bca80d9edea6ecedec915d184ed05bfc0da9d98b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QM4TX1885110.