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 0x43e46a032bdab7989ba5a41aa74a9151fdb76625ea9859a4da21592f19090633. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9457daf2-c890-4713-8a58-13f55bd52163.json and https://artists.proofprofile.net/proofs/artist/9457daf2-c890-4713-8a58-13f55bd52163.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 0x15f2edec82a8f3a266f9e988ef478bbd8d5009d325cdc2b0d77e7ad072186216. 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/ESA011591964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82f009c10f4d187fb9bab2fd520d658b512714b69446dd74674193924dd254. 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/ESA011591965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd984ff07cac13e6c9db7bdcbb1a7e1263feea1405a37d3f4302533791387a4. 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/ESA011591967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3889f09ba897f950e7eab9697b6203ba5c808bfd91ba8072b35625ae398ad6. 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/ESA011591969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76eb8fbca3c58226f77a07801527074adf7061902dcac974d7275483563ecc6c. 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/ESA011591972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4765c195c99b67bf0e56927839b27fa6ec5c15a5aa10d88594c065cdca390856. 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/ESA011591978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6911fe7387feea37c948b940ed30aa6deda82f54650cd9c888885210afddb753. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ESA011591968.
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 0xe8568f6e7d9cff1b2df8226ef2499960314c954a87fa908d5529e083061a8fcc. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ESA011591971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196111221a159a2986621519423701cc7c21936ef249e11aef03dc17be26d4ba. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ESA011591973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c0445d901894f5233ae8d247ee9727bc834bfd1ee51d7b986c18741d1e4872. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ESA011591975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed4f954a60851e1d802973f8e1ef99cd4db11d2d0fe7fa75ec43ddaebca3c45. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:10:55Z), 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/ES6102426602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0497f00c0d4ce9eaccdaab305aed327e974499ee928201f497e71c8e485ebd96. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ES6102500319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e11b21d89776dc6c9996695977883a272c32c34246bb1be31c28158896ccf23. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ES6102526603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2071e1f774655881f204740b7072a90f19a5a56361e0ca8a4ae9eec8274488ae. 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/ES6102500300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd4a9c7a85ef242e504caa374ecdf746ff7afaee79d988117ff5a1c002a24a1c. 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/ES6102500320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da0c9c425a1c5ceed3f49a37e365df8d760208d1eb90bcc3e5dfc7c182d8c0b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES6102500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca74367984ab2f2457d1cd93c1390732d49e57b7a93e70d5a1902249d58a00dc. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES6102500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7acddd785a54c3d3511b468f316b2cca3c7941e335eea3c2ca4b7a085f3a6120. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES6102500326.
El País de los Imbéciles - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda73e584e2163114f8b25748fabf4fcf694f2c381ab1631c787cdb101a3efcb3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES6102500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b927de0a53560faca4d8b62f1750119c7509001833bf527b9c7434a7f81cce. 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/ES6102500328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bb3e0ccbb7675273cad8855d419911da94c955e5c6e2ed699f5c632036dfe5. 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/ES6102500329.