Pedro Leal may refer to: Pedro Leal (footballer) (born 1989), Costa Rican football player Pedro Leal (rugby union) (born 1984), Portuguese rugby player Pedro Rosso Leal, ambassador of Cuba to Angol
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 0x5d5da95671414a525cfc54b456c0c06bb551bf041da2f18e7e43ba2583d8dfc6. 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/87a04a6e-0dbe-437f-8558-ffa2af62028d.json and https://artists.proofprofile.net/proofs/artist/87a04a6e-0dbe-437f-8558-ffa2af62028d.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 0x73be10692eaea8feb03f7e02e013ac3e706291abf5997be1f541f11f5676ab15. 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/BXNT62205084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7059a380592842af0477cbccab9c7790564c646c4e9f2b72099617683a1d152. 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/GBRKQ2047149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d492f30d3a8c57d21f1e920717b29b7e8767dcef8ea28a0ee82c3dd60fbc1e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXNT62205082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c2c1e34c7a32b6d81496698111f27f03f84d87c9684fdcd0469f0222953ab6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBRKQ2104647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784ada678cbf42d04acbfae20214d0c74b31f7ccca2d82b13c42b30b82be9c4d. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/BXNT62205083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0d5e447078d6a2ca3c1cea940c0cfaaf9c2084c0deb84bf1f93866e281920c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXNT62205078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be06f2355d20257af4738669b413320ef5485d8c7c0bd7760114dbf3398732a. 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/BXNT62205079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ec57552c6f6cda8c1dc05a1e8bc7fdd54f59d196c05920574c584694329b83. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BXNT62205080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bd5966c4165eb9aaa58d7aa48b718d92a83e8593e1c2c6c77c6c636d5ae86d. 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/QZNJY2295124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b64d821c135c43d6a526179e1bfc3ea1d8c87904fe580ca1fd5ad9f0e8f474. 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/BXNT62205003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f665ecee237e8c8422f54752cf6c992c57bfdbdd4a86f6a881eac34c8979a82. 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/BXNT62205018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a53dacafa5149bf74c514ce3b325d8326ef46fa29e68b4ebb20280a947b7e4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXNT62205057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561451f0355bac5952ee46fe5087743f2295239bf860550597bc915b87a8b9fb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXNT62205013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ff0844fca0d97883b8140fa7776576a93c8e6f67ea4ff3ba725ef7f76dc738. 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/BXNT62205142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04cdb51f8a529cb505d5ecd83ca0a65f33f505b283ae91e3d388569986250b0c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHZ32080598.