thumb|right|Panchito Riset in the 1950s. Francisco Hilario Riser Rincón (1910–1988), better known as Panchito Riset, was a Cuban singer, highly regarded for his interpretation of boleros in the pre-wa
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 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 0x51290b7eb9ab28320233110f97c3370755bab1fd54bf1d4e3a32af54155e4a40. 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/50907e96-172a-43f0-86fd-a8d5fda48273.json and https://artists.proofprofile.net/proofs/artist/50907e96-172a-43f0-86fd-a8d5fda48273.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 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 0xcbfc294e214c5612ed378f4a402f8fef9896d6a301be81d7e52d1910b869a4c3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEXO42491484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bebbeafc8d692bdbf7505fc2b801ca2f3a5ad2a5ca45c315e6201b1cd2ec4b6. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DEXO42491485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429c0fd17f531c43cb8d2b8d625dd225444a0812fbf2d239f6298b0c256c50d9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/DEXO42491486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4fceade451ce39202e90742d9cb6fc1bd643dd3c18f81b7aa9e1926b81de8a. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/DEXO42491491.
Vintage Cuba Nº19 - EPs Collectors "Panchito Riset Co Luis Lija Ortíz Y Su Orquesta"
Con sus Mas Lindas Canciones- Serie Para Coleccionistas
Exitos de la Sonora Matancera Con Panchito Riset
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f573842c62380f14246e9162b2fc0053578aed3d055f9f455bf88a88ac36634. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USJE61702353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e9a9fa71906b738a8c334ac6c7f87090e5abe44f0af6da46aa89914926f7b4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USJE61702357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d281bb0ddf8e3d5fc7a8e99fc9b5be1c73c82e02178026dc54b2ef243de83e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USJE61702358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c867801ec29bf6ac70d93b30f84164c718f3a76f1d25afa2ff2a510f7d64db7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/BGA261838308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fc21f69ff1e502b68871d8dd4667be81b065f44446db769e46398da43a002c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BGA261838316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd0058aefb4a4be6421838f3ff1fbd06959aa3fdb440920302015e6ee130b70. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USDY42030780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1247e364fa2d0d3b8582372b1ce2811a377df97e522d534e619f8ee9fba41ae. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USDY42030784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf802a401b6aa9628af5d65c0f6205abdeedacbc1503fed7c5d8e21cd3d8acd85. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USDY42030786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb56410e1b1440338e02b4517c5376ccd8d17dd0b2467e24253d8147c9411771. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/ES6602004147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc67674105f5ef3b3b59451b5be9eaef06e365127ec4e20e71e7169d02b0d9a4. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ESA012140356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9168d59d67f424fee5b0713b3ac8f63b120a1e8696746e900a96415385861984. 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/ESA012140357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8fb1d3ec0038b03f0bff4f7e3c9c1eb856961bbeb4995842428d08759caef9. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ESA012140358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8802f8d1b351ba0135c143e3f0950d0775e662afb7ae23d88586762ece6fc27e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ESA012140362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5127e24d186dc6f11a7572cd01dcb029f73095df7d175a1337e40208d2a3217f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ESA012140364.
Essential Classics, Vol. 1103: Panchito Riset