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 0xd4986594b105cf9a874ff1022eb39ad5681503888cc39a5958761a202512446b. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2efb3a78-3d49-4ede-861d-e9f26b7165c5.json and https://artists.proofprofile.net/proofs/artist/2efb3a78-3d49-4ede-861d-e9f26b7165c5.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 0xc40254e2e4f166ca80849ccc48e8d52ea8297b87584df536bb422013326323ae. 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/AR1CG2400030.
Dime Quien Me Lo Robó - En Vivo y Sinfonico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dc07b47d7bedac7d6f113ebc68f6cf185658b42d5c934d54cf8bf811d0ba27. 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/AR1CG2400031.
Canción Para Mi Muerte - En Vivo y Sinfonico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec80730bb214300a4d026f43c439cc7186045dd2736d84b76b4cf9a7724ea0fd. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/AR1CG2400029.
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 0xe7cd8d83d48255c26eac0977afdf540b0b66dc659fe846580ec0578219b73526. 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/AR1CG2400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d286d7f7e1829ccbcfdf1e53adedf9a451e20b487ce0c6f8aa293f647b72ede. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/AR1CG2400033.
Natalio Ruiz, El Hombrecito del Sombrerito Gris - En Vivo y Sinfonico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf1c807ee740134a1c03637aa9d6af96174f92af6796da1e55175f21326caf6. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/AR1CG2400034.
Mariel y El Capitán - En Vivo y Sinfonico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d45a831cf7bfcaa7606e7ad7c60b7f389a440169db3efaf85b51c64535ef1e. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/AR1CG2400035.
Amigo Vuelve a Casa Pronto - En Vivo y Sinfonico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc792cfd82aac74a0d44c684af82fad4ad00c6e0ed64c4d1c1cadd6be62d60bcd. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/AR1CG2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e536c94f3f3d43eb8f13af88dc9416985a2d77c7b799d15c6b837de3f8c5b11. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/AR1CG2400037.
Cuando Comenzamos a Nacer - En Vivo y Sinfonico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ebf1758c3f6c8199c26c651579f2271a82722c2ccf35f77751e96e89bf818a. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/AR1CG2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262c2c1f2d1def4ee34a89bd99d007c59126c4612ae233c1902cc6b43dec4254. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/AR1CG2400039.