Jacala, officially Jacala de Ledezma , is a town and one of the 84 municipalities of Hidalgo, in central-eastern Mexico. The town serves as the municipal seat for the surrounding municipality of the
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 0x934f67c10fa88f8c3158d60daf4490b3b78df2ef335e48c97ccb44522c484437. 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/71bc8dc9-9da5-4c01-ade1-889fc7d46592.json and https://artists.proofprofile.net/proofs/artist/71bc8dc9-9da5-4c01-ade1-889fc7d46592.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 0x293dfc79f36dff85262da00427067e33c112cc305bd1c785dd6dfca92f68d39f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM6P41991692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725e6dddebfe6906e9f970c97c970f7480e4bce460c57caa1caa9aecee7f5483. 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/NL2QC2100352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4b51e9e0d7137a597e4a19456f7d10be14f63c8f446b6f4aab80efd14f9584. 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/DES232200190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4b0883042f40b57f4250eb67c26c575816716f4ac3a2522a1f000a0f05967f. 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/QM6P42220623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b56e51d79361ba3303d6dfefe2091e33fbe797b52504696fcca0f9f19adee4. 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/DK4YA2281401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0136e139326449e4c64adb971ad369b575cfc77aa10b6336b14f98874968e50d. 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/QM4TX2208489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010bbc31aeb9cb9b7913fb752d81fd18c41a870b82ac80152256178c7cff9b73. 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/QM6N22234508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194acb696d9496422d4790f526fa824a90f97a6417ec25f3234309a31c50b18a. 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/QMFMF2106470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeec6d4e2a9405aad58dccedf9d37995b477a707deb2fba4da3af101cc680721. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMFMF2106472.