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 0xf9a6d6f5d253df7949a54f11cb74a9592fda053a6601b029cdaace5177836f5e. 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/0c10c547-1803-446d-9f1b-ae4eec74149f.json and https://artists.proofprofile.net/proofs/artist/0c10c547-1803-446d-9f1b-ae4eec74149f.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 0xe02b8f58396aa4a83687052d2955ad0f9cc55f9ef18c290dc335c30fa2756ad6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR6V82301383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bc132a7e641cebcfa382f55bb6409a6e275a3907fb0abeb78e71a4625dc3a1. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/FR6V82301387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd14394a7fbf220cc470de660aa3d86f532630576a5bfaf9321f950621452bb2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR6V82301395.
Estando Contigo (Contiene el Exito Batman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e6684b141d75ff78cae6c714d05a705a9757038cb6149eb2f299857f5fa39e. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/FR96X1611607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089a188051836a080d732f7543ad858b25effb11f94409ef3a863087788eff23. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X1611611.
Guillermo Tell: Obertura "El Llanero Solitario"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1320bcab6c908d7f3766794b587f04538a037a538ddb1ae575354ea10f0ae61. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:40Z), 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/FR2X41666788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2e09fb7cf84ad02b4437a8c48d043f154047b45a2184152b54dd5b22e78d6b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:21:35Z), 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/FR2X41666794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615fdb800d7e8af9518a6820c9d5dec351ab75f590369f2c44f2901e9f6ea935. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR2X41666795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe796e8c9096b7aeeecf1de846b7e00350e06fe2c1192b234d6a77310dff19132. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR2X41670223.
El Llanero Solitario (Feat. Montez De Durango)
Popurrí De Sones: El Huitzuqueño / Gusto a Tlapehuala / El Zopilotito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7218252da44ef7707c2235d3887235f07868aaa9dae4ebf9a88304b37c5081a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR2X42559983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d0258a0081ba849d16c40ff07a4760807d90475b323c561950c6675b09a14e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRX202565928.