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 0xe3f8fdc11f5bb8d147708255036eea0f8bcc6844d4245228cb154b9fe6e48aca. 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/19a5d100-decd-4442-968c-6d2f9effc40e.json and https://artists.proofprofile.net/proofs/artist/19a5d100-decd-4442-968c-6d2f9effc40e.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 0xe03c317b460983914e507caf0bc44e1c07b2156d3ec80e594003b5be43f75fb5. 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/ARC571702923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb406ce19f48204a00d62c5619bfd85077d68df1d0f4189c37f0e558b8c20907c. 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/ARC571702924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6bfbc738714c54352a5c8c4cabee9203255b64590b4c9926e2ded804319d3f. 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/ARC571702925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dc8932d87f3b5fd3a3ece9d835d708f4d7cf39ae7ac120864be7cacbcfbf4a. 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/ARC571702926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278936d936bbfe76ccbf44d2b6a3a86fdabf644fb12a8627b61ca6ec9ae0802d. 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/ARC571702927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b62e318f41a91c7d8df4539b07976f489408c835dbc0684d714b89f591e2f7. 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/ARC571702928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc59439c0bc9e4c1d7588c5c56d5bf8df92a2d9764c5080c02de46d825e1821b. 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/ARC571702929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34948b248fad0ba1c7820e65fa72e836383d7a6fcdcf9a741f054dd2fda159a5. 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/ARC571702930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d59024a9769ece8b0b810d6a5fbe6af76bb533bb3b25dda28f2473108f7f88. 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/ARC571702931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373d45c876761c3582aa4f9da4b9f7ced19528346c13c7c6fd8a3af587c191e0. 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/ARC571702932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b0cb726dec917d3704e605b37a20b128780b68dca15087ff45f48df18f81e2. 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/ARC571702933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64b08dc4e622bbda9cf5bad9ed5ff55e4c40a30cb41f09e86cfaf62156f4306. 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/QM4TW1643115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab688847a3631f2b8594165bd72a32110fc483b3142844aae4aa548fbf6bf5. 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/QM4TW1643121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c243e52338e5ed68988c879c7c34620965fbe50940a13ef214870e1ddaf4d17. 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/UYB140706401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9cc8b404d8e44f7de7b74688ad6e4d461f1f65a86ef676bbcd6e18b6b0145c. 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/UYB140706404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe08a691457665f4c602ab4047069d98b574601857a76dc56073b1d23d01c034. 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/UYB140706408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8589e4fae50f44e6d81e0abfcd81a9d6cee14b8508ff2a16e4f7132f48581c. 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/UYB140706416.
Nunca Más A Mi Lado (Versión 10°. Aniversario)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72af59a94702773d6c6ca249fbf2a58c711cdefb82fb9dca5cddb9ac7ba8f59a. 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/UYH122100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121054d51bfe195fffc3ed6205184ea583a2f9c89565c313ced79798b1f9051a. 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/BRM311500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612588cbb7ff18e56bf7d5d71bc5472456b6681fb8aeca18a75a9d04b96fccb. 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/UYB262300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf418f339498ade8502f6afdedcc404b1056c80cacd1dd3a122b236fd73a45. 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/UYM121800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718b0dd3d318690be2e193d71c775c84e8dcb02c5ea48fb2373df0a504d1f1df. 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/QZES92349722.