Don Cheto (born 1980 in the Municipality of Zamora de Hidalgo, as "El Hombre del Vozarrón" ("the loud-voiced man"), is a fictional Mexican American radio and television personality widely known in Mex
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 0xf963341944b28a7b0eb66111063ee2f5d771d37e65f6684b74963818a8e74a0b. 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/5e23b8c9-afda-413a-ba45-96319fb58b08.json and https://artists.proofprofile.net/proofs/artist/5e23b8c9-afda-413a-ba45-96319fb58b08.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 0x0c73af432d00f2bd54514566cbbe524c61ac5c18eb5c4a93ed4f5e17ea2edfbf. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:33:57Z), 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/US9CY1000333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bd699173a005c671e96dc3f8e83ae206fd09bba9048234fdc2922b34daec48. 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/US9CY1000334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb202644414a65ae963c5b258ee27e10326e9fff9793672a80c7d6f3c46b7f0be. 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/US9CY1000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7858415b6b85b69e9b494bda1d4ca84686704d9038ed5dd137e63ba4056771de. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US9CY1000336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4396286bfb5acb1ec9ec3ea8bb7a1f3de97b43c575570d00c37dd9d5420de07d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US9CY1400648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2384093f0030331296ce4a624d5ef1dd9a6e72897dd29696962f53eafd47079e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US9CY1400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e66c6ffd69cf4aeb225f227dd6d4cc796982e483154779b2b9f2088f0d57c44. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/US9CY1400980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b17e185d4e6adcbf83ed906e19350c91fc61d0a060772e6cf6dad392f5059ec. 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/US9CY1500994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618a39abf5a57ae756da95b3a9af44db224f953c5708d725a9d6aa00fb2f1845. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US9CY2200573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d245d7dc5378780b24f75f5848a261beacc5961187a7bef19f2e4965553705. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:03:22Z), 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/US9CY1600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd723eb1af8fa3b328892a8999fe328a872a77a443e8036c84e6cab31a43a38. 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/US9CY1600156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487ab08423725140ec3a53d30c4160947a097ebea50f769b968516753d359701. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US9CY1600157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad673e99286311ef74b8112abe0e495a5b8f65ce4931f38e8791d64a6ae7f4d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:59:33Z), 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/US9CY1600158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e4867739bd089269650bf0401d7fc97687c764b05d71e86ca58574d9a3d697. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/US9CY1600164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe3cff91d16c929701977d06d7a884c815fb8c6687e32b56f9abe79ee6cb492. 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/US9CY1600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45143d542a3d758514ff0c806110ee4a640292964d94238a49cae0f42d830d63. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/US9CY1600169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89385be335be36977e3bb2941194fe405c85f4a40d807b4edec21db3d60e3238. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:16Z), 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/US9CY1600172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfedf470aba820264931d8c904e6d5e032f48aaef8ff998bb6ed2f952dad243a1. 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/US4H30600288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a3a24538c2412a75a395988a9f8b35af4b62277af36aed1415ba1cc1cc0ca3. 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/QZNJX2432046.
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