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 0xc51e4aa7614f357c07bdfafa2a630a79ffa2400110d007c7a2e08717323b4205. 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/2c1397d4-034c-4af7-8a25-008582cbb136.json and https://artists.proofprofile.net/proofs/artist/2c1397d4-034c-4af7-8a25-008582cbb136.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 0xbc60fd513834a8948a044b73993d508c6db072b232102e9ddda867ebba287ea4. 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/QZDQH1833574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820d703bbf979eb8eb80cd7c0eafba95a5126ee1be1ed2ffac61f8b7f82b5e33. 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/QZDQH2414168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e3cb3482e4c30d26cc6957ff3396922fa4a806eabdcdc5109f127adfc9535e. 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/QZDQH2354269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00c9fdadd1aa12569bf1825ba37a5ffd8683ce33137f58fc5b0066da5d9493f. 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/QZDQH2269445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03ed64534981f98280f7fe1802e080d2da4faaa8a0d7fb0ace14acbcfd6a9b4. 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/QZDQH2269447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a977a572884ab4721d1a9afd90ce01411074d81bdf4f73790a05a8aa151a96d. 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/TCAFD2049543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcad204c6712be8fa0f0ddf8a4647c75f7eef55ca13103d3ee818ed8f28e761. 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/USMH92333054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aabcfc4edf8ceebbe39bd9c72b4da51fb95b9656d51d00702fe9bb9d380103. 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/QZDQH2425932.
Popurri: Estrellas y Diamantes / A Cada Instante - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cb31e36ff54e04aa7a94722cfa2c37b0dfb2e32a1c7de28ed7d590697a9d86. 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/QZ7HP2420911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f843439ff8ae25ad8ba0e62c027487abe3d4525ae876bd9a9c2d28a76a33f0. 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/USDXS1806079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b677a63127116edb87c75bfc4491a6356390397a446f7263ce3ec55ddd9b43. 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/QZ9QQ2400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef4d93a56df8c9a8f6b8eacfc631e5c19a4f38981d7a8f79aab28e3c9a808be. 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/QM4TW2412707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5bc7b160a272d43511f6c78809c0e3ab9e2ab82189fcb4badda91fbd5ff3ad. 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/QZ7HP2300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44bc4172623bcc39c8fa8e1a30a15bab3a3b2d162e9f0e3b4ff1138bb90044c1. 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/QZDQH1910288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c05434719b69099209b69b92e68e8b2cdbf6e9c905f0865c7f9730ba0f9f8c5. 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/BK4DA2465100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7370daee0470691120c00a442b3701258fb7e3fb3a33165f1f7da8e792d4ff. 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/QZ9QQ2500100.