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 0x5bd50780d596b595c32860c59437fc2c9071b5fb301cffea31c28d4b55194abd. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5611ac56-2fe4-4e58-b6a9-e75e23eee9c0.json and https://artists.proofprofile.net/proofs/artist/5611ac56-2fe4-4e58-b6a9-e75e23eee9c0.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 0x1c0e6de1febe2619785c859ac3e8a6687ce5dfaa5be9df7ea83680e4626995b1. 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/AR0982480009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafed15ad52b20e59144344dca444a4fd107a273e90489ced1792a6386e1719e0. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/AR0982480007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe02bc50856634a3da37a58c4e63482d82b537c75170925c6d0eff3d74e8efaa. 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/AR0982480006.
Facundo Grandío - Festi La Sala (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc3e1e61486c95aabdc8b0525be6f9abb368c232a5cd054ca12b89da7ef44bb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/AR0982380045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879cbd8185b3324283de6192197c4e78f08099b55667631e8f19a0cf3a2964e8. 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/AR0982380046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb318f69b07d0e1f55bb9d1460e83edd64c6397b88b6ad2610d6ff9c4ab3e5fd7. 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/AR0982380043.
por que me dejas? / lleve traiga - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35fad685dade47fcc9812e1337b6bdf174d2ad7fae3bf366333e9e4e25ee2c7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AR0982380044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda98a125e0cc107f9ee07fd00340a9b9fb14385e8f16d531340871fe0d52e2. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/AR0982380014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3141f6167c7646a033462a404e6eb2dababaedfa3a5fb2ba56645761b96700. 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/AR0982380004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f50fa4c9105f99bbefaef691c88ab0c14a194d6433a35f7d35d41b7d8a90fec. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZW9K2475757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2afb55fb8347f49b1f97af131a64fd53f372f878d2f3d13a51739a5eca2bc10. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QZW9K2475758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44c1898ffa8639154349b50f5f5feca7ad1892c5d276f1972379c194926e1ff. 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/QZW9K2430742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e263bd5f2803022b90e38d3d69f9940cb0b1f1f7b9804d7e351a6173ed86de. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QZW9K2430743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d0fe3fe2692938e7b562e3974c45119fb1b1ee1fe41195424428883be55f6d. 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/QZW9K2430744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a388e3704c85df8e57f2774a51b0b47ca575aa07c4d9c15fcad3d8e8187645. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZTPX2465247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9c475d571d95302ca1ddf186b6e2bace69ad19b65c0acea136d9268b5f19a4. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTPX2404188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c67b23cf03420e1f1955fc789f90d52ed3d76ec9f7708275a7154e61db9209. 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/QZTPX2404189.