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 0x15f81fc9c56d4b8b7b49e6ebf25a153f7d86c00324ae73aa0431e6817cf312ea. 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/b7989afb-46d3-4c70-a10f-2a3ad2fb8294.json and https://artists.proofprofile.net/proofs/artist/b7989afb-46d3-4c70-a10f-2a3ad2fb8294.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 0x8fecb14dfc6c53220e328b3fe781e68f16871dbe7ccf40b95fe28bfc1b8a86f0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4TX1778509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dcfe387c8a9ffb702214ba3f8030a4b4581470664b227826d379d0cd539284. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QM4TX1778510.
Mix Grandes Éxitos: Con la Tierra Encima / Flor de las Flores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b286fdae3e00893eafcb89436d1ebedaac483b18a05a643d87379c230bcf78. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TX1778512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48de100c86b235f208166688df3c2f1eb9bd23567fcd1e7e62cd5669a8bfb990. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:46:58Z), 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/QM4TX1778513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7500e409022c2a2634892bac1c953b87694a2ca14c6a4660db162c6444e55b1b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QM4TX1778514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761e597e6c67c2732b5a266d75af31dfa4e6fdf6ccca127d3e763ede22367978. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM4TX1778515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3870d27db46b8598738952b6b16a23555bbde90e54ba4d63cc15570c3d190d02. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QM4TX1778517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a10b3a53d18ed2cbb81e592e8e03964d20acd15866779b44ba932922a747be2. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QM4TX1778518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc1fa1a4a957ecdadbd51ac1dce3e870394a4d1a2fcd972517f87e79584b29f. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:06:42Z), 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/QM4TX1778521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c0cc8a1fce951e0aba04c743f1fe281794b4e4ae0a88e4eef6d8fe996b6a86. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM4TX1778522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35212b8359f12b27e8af41694b4251939d84883a7337d9f2f5c35cb32f608884. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:56:41Z), 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/QM6MZ1803437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d859b1023e06eafe965111fdccbedb555395afb3de1f9d934eee7bb94995471. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM6MZ1803438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a5aeff90b9d79607e14c20185485217e61b3a26b30f6e84553505de3db1fe5. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QM6MZ1803439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb71e6ded9813fa10c5612c33e45eb3c24393a3bfb43c972f3b7982514e46c22. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QMFMF2007945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1beb285cf5873eb58c50e971c1f964de6d98958611edd164f06fd4f5341a1ef1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QMDA72192747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc4f2e670dca2646741321709e4bb4a2aa47ff0165bae36c87640f4b7908d23. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM7282545480.