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 0x73a6189613b8b21ebb4a09c7eeb30216f68b5da31ffe54aeb30bfcfc763c950d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c928f7b7-d3bf-4885-bee7-fd0b94cdbc20.json and https://artists.proofprofile.net/proofs/artist/c928f7b7-d3bf-4885-bee7-fd0b94cdbc20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Échenle Alcohol con la Banda y Acordeón (En Vivo)
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 0x261434eb7f516c55ff025f6c037ae0d5de1053ea0fe0509af75ab496c05ff5b5. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZQMB2101604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd52c1117b0ae93abbec46f0840efc26aad0d2e7865718f224e4f0851729d5b4. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZQMB2101605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ca3fc3ed5d172b63416ab2c1f94ba65612aac3678e8402995120c5fdc68edc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZQMB2102005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9885fc7e117ab5969a3d6c8c4c53c6134f8d7a8420c2cff8c48f64fcd65ed3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZQMB2103989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0faedacbcc2a8b85ac5f3d0b3766af2b6bf324258194307232c4ac497ff49968. 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/QMFME2318075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77663f9a8a8b90fa2c6400af971c691501436b72468f2b92626283d0e81429a7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM4TW2422627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a267bfb2a291f71bd84b93e8c30e91f6adb9f4a01c1c3fa7674f35fa91b66d. 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/QMBZ92489659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bf2fe5b2d5c76f31f1b71ed5f5c59742d27b9c4cd4cfb1b44bd47745497cfa. 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/QMDA62444588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e558cf6b16f4acda68b4a38cf24dada374c787890717a5182d6c11372fe196e. 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/QMDA62444648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25ecf5b426526b16a0459c4c91b3d0f92a495f2ea8377378eb94c10ec87b713. 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/QMDA62444674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0359c2931eb861cdeee719c9a9b6666f308c6ac94ddd4a0954f22d527c2aa5b9. 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/QMDA62444690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25ecf5b426526b16a0459c4c91b3d0f92a495f2ea8377378eb94c10ec87b713. 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/QMDA62444674.
Échenle Alcohol con la Banda y Acordeón (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc34c143b1fef4a942db1122eff0ff3480ba0a4f16ac0e924c9a2badd35a8591. 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/QMANG2254830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223a7c043a7d7df3e998a75f968261f7e49d8cee32f0e3d02d4b78e2b14d0103. 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/QMSAV1105511.