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 0x8a29d4ed1206df9e1fdc054ee7dd71345ae286d7346b88e6d7419377a279b8f8. 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/a474a744-30de-48f3-8288-a5b62a34971f.json and https://artists.proofprofile.net/proofs/artist/a474a744-30de-48f3-8288-a5b62a34971f.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 0x9f0be816b2ebfee9f28ac22c44395fe6d9f21d2d0cb05c6f14c6e9106de208ca. 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/USASN1100660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3013fd0d15ceca82875845e0f16aa8752c7e62c84c9dab4b5f4f43104263b693. 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/USASN1100661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fba40b52bee20253fdcfeddcc27be475682fc00e0583b134c6c9f419f459df. 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/USASN1100662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0336a13bf928092d145f9e2fab8e18d369e4331d84b1bc83be9992bb86225ee. 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/USASN1100663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e151e997d4dda2c84785e6340d680131bf2ef9f2454527eaf2fa8eb4e1434. 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/USASN1100664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78e0ab58dfb7940f0d2d5372353207b492aef4683d86bd860199c3e239159d3. 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/USASN1100665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f59ffc3a0d1d46dc9cee61fc2d304730d690d3c49356bc79a55368cc9d68cd2. 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/USASN1100666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc125610c0c4916d1d14c307a38e565e2afdb77bfa06e0b0ac9276d4a3742b062. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USASN1100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f465f16ee38f7f10f44fce7682f03b25431c332d1ba58fee72d7c88c153f59. 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/USASN1100668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47afed6a13ac5b73b187135f248ce36bf8413cb684c2d46e180925187d21a82c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USASN1100669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c84f99bd07a718eeaa91c796756730e653bef9ad8a0a79730c2696a73469b80. 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/USASN1100649.
El Padre Antonio y el Monaguillo Andrés (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64cc53fdf8e45fef6462a1d4125edecfa17a7f375eff0668feee6d5b59353c1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USASN1100650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e7178f79b21336b1e6a6b55191589a98bf1d86204749a995ca3dec24998828. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USASN1100651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d97fca4084e6ae5acad0e2a5ecfc46bf92c8b0783bf5c2cb90548ba830d8af. 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/USASN1100652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9716239a44ee1d5f9aba1f9a70d15abb31e72fbd52c589fb55acaf68c99f326. 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/USASN1100653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da98d40da491dc0f77505f1092819e525c9c2990c91ea32e996db44fc276ad6. 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/USASN1100654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5bc04781d493dd11b92e8b81d747f8d9829c39c68eff8967a63c3f23819b5d. 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/USASN1100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fabde2a0a57c7a30a2d2e0e78f8795632c9a767a05272640e6885d1ce3c13c8. 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/USASN1100656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8897af18865d0a9457dd6f997562b9fcd4618ceaf7ce203bee6ce6356624e2. 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/USASN1100657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f845efd0db0a132eee62fc5361bfc4934a317ed2776a53c97c11a21310b56f. 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/USASN1100658.