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 0x9ad52105ab40599231ab62a67ed4b5975153fdd91e9448d078220e69aedc8dc2. 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/b78d2607-f66e-471e-8ff7-22e177267968.json and https://artists.proofprofile.net/proofs/artist/b78d2607-f66e-471e-8ff7-22e177267968.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 0x845f846036603b87fc7152b03f3d8f223cd8f3738cd2b0234298464767bd2821. 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/QZNWY2397851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218de38f290bf415341de4e5fb5f006d5edf3cc2d8037b4c108e08543d4143bd. 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/QZW9K2306240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255ff609a97f62174237ca7b7de56c21928a25f81c5baf4b49ec419f3300dbca. 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/USNPW2300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11326de368a3d4ef401394fb8559979d74392977392afb22a1af205977ec9790. 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/QZTPX2196866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dec71fd81e12271e100a5ea1dbf2f3c5f7eda4aac53e269b04ebf4d0bb62fb. 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/QZNJW2252258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda0ffa5c4055495314b727c88305aa286b3f659ec94035cb0e85d77726722cd. 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/QZ7R42052769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd3deded4e440857651a7e19a96f262aadf32fb85ac89fa44aff24515a05b6e. 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/USQY51769506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a152234e2af2d4e25da46f794f8091a8856e74941104c1f9680d71516c0476. 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/CH9181400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a26c6a78599be3a52b40f581b6a4192d265f1fdc1657ba36c15628939ed4ced. 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/USCGH1634925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5c60d6388f91f2d7d892357a1fc197c6f219c062a1ee9fde664f31c8f2c3a2. 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/CH9181601201.
Latin Hits 2017 Club Edition (50 Latin Music Hits - Reggaeton, Urban, Salsa, Bachata, Dembow, Merengue, Timba, Cubaton, Kuduro, Latin Fitness)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4a17b7c2d6cd9bcfb5223e705820a396ff8804334edfd0d134f5c62f9b736a. 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/USNPW1600229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7a2ad9a835e4689e918d4eff243014b2052070e2fba59b9e7264ccc1bdecb8. 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/QZNJY2255323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4c9f15b6c44f0a3b0d380333d184ceba05b7931cd99fd9fec2c7b60ca11820. 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/USSD11900137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6d52f68afc07655ed6d0649b118609eb82f144707a09533406cd9ead447f1. 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/QMDA62106931.
GUACHINEO (Cubaton - Cuban Reggaeton 2015 - Lo Que Mas Suena En Cuba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4abe18caf84d10889686fa7782daccb2610cbc74bb930b28cfded4ed7d763be. 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/CH9181100294.