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 0x6d3afebe19974c944a1066bfb429f6210550dc9c2cbb472bc735e6938706bb22. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/504a2874-9db0-4170-b671-a5314e6bf89b.json and https://artists.proofprofile.net/proofs/artist/504a2874-9db0-4170-b671-a5314e6bf89b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bien De Aca: 10 Años De Rocanrol Nacional
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 0xa239490a23c361cd866ab7af495a81281c2ec72b7a3421b1f46cd9797f45740e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/UYB142122501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdaef3542539360c3c2145558abdb8f2c86cd739e1ac09bc5d26b29a77131e8. 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/UYB142122502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725412c9f4bfbe6262050b88a9ffe5a4252f18f337f90e19de8a736f07ec08c9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UYB140709901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49746a836d46c1432949a7270633e375b7e1b61509daa3dc3779c516170ef234. 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/UYB142122506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bb382a8faa233c1cdda537e06c5f5cd61ef42fa0465ce1c2e04641c9930611. 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/UYB142122512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a2364781b66b9c223b0eccb40b33a63166a1e5bcb4be5339141b38627f887d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UYB142122513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06187782ea37225a57fc701a5a5a0726605c6432343ca271936f686156765b05. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:35:50Z), 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/UYB142122507.
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 0x35971008f5578e240569960e24a6aa7f0bb9766054384f1ae5d8b2b7e4e70264. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/UYB142122503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9adf787cb4183522c5c50b474213930bbb668233e41b229746b898e5faecfb. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/UYB142122504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b67bde2c06b2164b1a776f91f67dd3ae289a1c66ce5cd58e4565e9f97e5466. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/UYB142122505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94f1367201b4d8d067756f0d39e92257384e3b578a15c5fbed9f7ef2ecbaf5d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/UYB142122508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82eaf6eb6da215c7ea416b695f9a1d24af0662aa0b3420a9586e04e4b80cb0ca. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/UYB142122509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81e0fbb02e0dc7ac607f3bc3d1d9757aeb4ea05a30a106dba4ef200b77780db. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/UYB140709907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb21294e5dbadc0f2def6946dcd47675678efef43ce36708b125573e573f01b. 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/UYB142122510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fc7f461f2cdf3509bf2782ec518b246b2ddb1501e87517be0cd79f1a551fce. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/UYB142122511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b45838d0526082bcf5b8f7478311247d967c0fb9dae90793bd4556deaeec263. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/UYB142122514.