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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b87649d9628f0af0a4b7610b34ed1e5e0f71296e8f8c990766e1758a471a77f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d366158b-ee1e-4eff-8bd1-a220f3093792.json and https://artists.proofprofile.net/proofs/artist/d366158b-ee1e-4eff-8bd1-a220f3093792.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e158b47351ac40bddbcceb3d39a1a21fcb5beca0c0afae569557a84f979fe2. 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/BK4DA2315158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f51c684e32ea5e9ad4e64e3296b2d3e1c1b0692560b6ba9932115524bf6a358. 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/BK4DA2315159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c1f7d90aaeb4a248fea95b4ec061df686c6cde6d8f8d168a4e8c87c8c881f8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BK4DA2315161.
Si algún dia te vas (feat. Juan Battista)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83166b3925055cc83c7aa8f6b49e84dea8c02b3000a8cb9314700511efa84690. 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/BK4DA2315164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa92ddb6267d1171e9557b2994ced3af446e98a1791194da2a5e7042004a46dd. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BK4DA2315165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4791bfa16b4c84a4e9750772416e5e683fce073c45f8c20a436df5d75f713228. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BK4DA2315160.
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 0x3fd34c5f2e152675d0de418a09a3bdda2f338286b859cc28bf64ac6a3f11bfc5. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/BK4DA2315162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40051c312110e2740204c5155974052841a13b954dcbfba81eb4bee39e92d1f7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BK4DA2315163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a83e0353f137276f03b322c241fb4c71dcd4cff78649fccb1aa68cb9388a43. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BK4DA2308362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d81a3dc4abf72fca097b4ab478d9e128ed4cccbc140c19e5f02bd157a5587c7. 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/BK4DA2300911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0312619f5fffe6eb87969c5bb2080bbbf441b75d1ae2d06889b8bed119603d3. 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/BK4DA2215287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa465b312e25279aa78d4a1b1a530b5bc7d6c5fccdb730cf57e6db3521c04a82. 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/ES71G2246841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d49e8eec8c06f8f7ebd0a29649d26f5b99a8f3659452e965ebe5db427b14b02. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BK4DA2212944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd47cec0f733e965f91d005456dfed90640bd669f25cbdae561ff74bf8ae9af. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2204135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242bfc7cfd915be2a0f3670054bed5a2037c3fc4216382820ecab6dec671feeb. 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/ZZOPM2238515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b335d9f25734f30c8342b3d5b02799435e0d22ad28b9fb7f1cc368f925c337a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZZOPM2231537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb539843682c4dbb9058a9f2ec2890d7e9a148a3d1ae866c758801424fedd060a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZZOPM2225932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6860a76d741ec5082f31a64c4522887326080f527c611d525a0775ee38ff0cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZZOPM2223456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65aa05a62b6cf19f2bd84acfdc0237e2060e518e976c20cfdf1a5d734b609245. 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/ZZOPM2119248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c4d5fa7f3fb8dcc89b54001fe7db092267d90bd7af5b9e6a5491075ad4f99a. 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/QZK6M2130193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e0f1a86f7ef88f10a85c30f46f3837c3283bf8db6a9fe20d867e18684b2681. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEM2150438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf427a0dcab2565c518f0effe1fdf1fc177fed90768dcad305887c98e39885e1. 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/QZHN92127985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1092fe5d7cde2a850aa8539333e00d8ca6de19838a7229983a6ca311955b135a. 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/QZES52119023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f44414d51bb1d166412b7dad5921401680077fa3a90fe2b43ebee8f728e53a5. 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/QZDA42183663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb77c1c63c252d07a6e8b0c8a8766d371d72866db23bd984754d80df205a439f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ72116105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7767a354441d6a13f04562229988f9deb88d63dd098580fc24dca8834e2dbe. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZES72139508.