thumb|right|200px|José Catire Carpio José Catire Carpio, (born José Algimiro Carpio Velásquez; December 19, 1940 – June 26, 2006), born in Guárico State to Venezuela, was a Venezuelan llanera music s
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 0x7fbeaeb25e925f05ae5633d0438189dd9c6c8c64f7fdca09a9fb586015cb2635. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e0acd76-4361-431d-96e2-8a50a76f5257.json and https://artists.proofprofile.net/proofs/artist/8e0acd76-4361-431d-96e2-8a50a76f5257.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 0x9d98d7535f1c71b6a8ae51b7ae34e21eb5ad38a7ed7c697adaa23d31d0cb31e4. 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/VED019100867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1d4233a54f4fa552c6599a38d863b98acfa9057f0eb475479cfdaa09e64f3c. 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/VED019400263.
Por Los Caminos Del Llano Vol.9 (Tributo Al Llano)
Exitos De Ayer, De Hoy Y De Siempre En Venezuela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152f70e730900122e442b718e5fee7177220b6947222a9409c69aa31ba0fc14e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/VED017500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45859991eb1d3b132f169e60475ec194c2a470f821876e87e9fc750ec68015a6. 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/USZZR1207703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbee7db7b2d4d2706e9d12b659162eed8bb1613d8f8e2ef9be3f16f396ab0604. 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/COA6W2100662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f615f4aae4fa4e4193251bef7e60da4dfde279183b6a06c2087c1e87d9674a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMBZ91630373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7e51bf391fd135c93d080c1ed534adc31674a5833c708e96f981a3ef7517c7. 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/USZZR1012419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa941b020b0d9fb1be72e62df404cab57f614fca69445c15aa911517cb005196f. 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/USZZR1012421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb785c0146947b980e0186f7525eb0e657e0aa9ab6f7aefe1852aabb0bbe7762. 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/USZZR1012426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c9ab72251f85ac41d42b93fd8b9ef46cf856e7e3351945273baa2b10641db3. 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/USZZR1012430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36feab6db505388a9150922b01d7421125156b50d1849feab8a192f975d3dae0. 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/USZZR1012431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a763674635fe7a3a236e6923b59f92a252b0e8cfd8a5cb4de5c3fd931f1576. 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/USZZR0912039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb582f178ad1909a7c1fffef104b497835470cd8317a51f6f4f6f494eb574bd3f. 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/USZZR0912040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd36ff1253aa28cfd043067ea997c29afc47a130311798e721dbc91f09f5b5. 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/USZZR0912042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf925009074c85e45234ef464e0ed942857c77bc00fe228c32158fed8f9f5be3a. 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/USZZR0912048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e5ce6d1371e423b1e91a899e093e6804457621623fef7f5248d4d9449bc0c1. 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/QMDA61595518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe422dc9897e494e72fd5dc601c110d944b5c0424dcb5c93caf6b00615f4b55eb. 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/FR10S1657684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bf2b012cd18168256f9ba30092339fd30803b2b8d37ebd0feb7b9aeff998a4. 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/FR10S1657685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a75e677247fbb40935a6d98eda2638a9b1a50241a0d0d94adf84d4cd5aa506b. 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/FR10S1657691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992fc079d56c353afa65a64a1ba727b10bfb3fb3fd3b88961ac4757876a98e5c. 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/QMDA71503747.