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 0x4bdfa03e8cd2c12ded780bb941575180fedeedaffc9cf0937271154a05f73a1d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d346c170-dcac-4476-ad97-0d8666aa9a73.json and https://artists.proofprofile.net/proofs/artist/d346c170-dcac-4476-ad97-0d8666aa9a73.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 0xc932950e3f72e3f017660f400cd73e4e1ab959bee5d1c4c90451621283f3e868. 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/QZTAU2281341.
Desde La Marina En Vivo. Vol. I (En vivo)
Popurri De Cumbias: Cumbia Del Sol / La Catrina / Poquito a Poco / El Venado / Besame Morenita / Pavido Navido (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5cf968e3641c360ce390ae07af73d858865d3677f20e07241926edff7d26c5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNWY2373241.
Desde La Marin En Vivo. Vol. I (En vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4721ec582bdc785ef4c0722da2a6fbec2403f15d42b8eba202d18883d458d0c5. 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/QZK6L2241652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf501360c16943d2e867ff7b06d9a96ffa968a436615df0435d87d9ba3b35d8. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/QZK6L2241650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4721ec582bdc785ef4c0722da2a6fbec2403f15d42b8eba202d18883d458d0c5. 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/QZK6L2241652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9b49410cc01a1f10dd22517534fdb946b100cdc65709b6467466ccdc3e06cc. 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/QZK6L2241654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ad1568b40e93138b4bfab7764606593f278e41e97319c9996d3304266b937b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6L2241655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7b148178fed0f1038453f6c6d532c623f4a830e16aff50ad4c52bfa81c4153. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/QZTB82385424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120ddb5cbbfd1b47a320c4f19033019326e8a215599712cf964fba60405b713e. 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/QZTB82385426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d2c74d65040d2767fe427727004f4f1a206ee1eb449c890162476600fbfd90. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZWFE2369683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d2c74d65040d2767fe427727004f4f1a206ee1eb449c890162476600fbfd90. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/QZWFE2369683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce34b4835564e524f9a442a9a734eb177080c1bcc1d8637219019c5abfb7654e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZWFJ2393824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36413a20eb7ac623637f72b951e1a86e9563849bc10b7b5a28a2cd7c973bc19. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZMER2469973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbace299c84f4c3a406d07c8828f8def24d8073b1dc3ebf9f7ffd1f1f95531b1b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZMER2469974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035b6b6e35ef7d287bf235d2952f10969b299c318ce9db0fb88496e6b7dbd9ed. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZMER2469977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7240d445a8f7fc6060e5d37a2d80786abf3fe58d1c013a3a3dc0a64466bf02a7. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMER2469978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8f967567cc15db26db4a0556f6f5a3087014cdd8b70582ddb87dd183447e35. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZMER2469980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757f3e13136d1ca068e1dd601edc9c89237c1a0b35b7a7937f0d245d494ed3db. 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/QZMER2469972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36413a20eb7ac623637f72b951e1a86e9563849bc10b7b5a28a2cd7c973bc19. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZMER2469973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbace299c84f4c3a406d07c8828f8def24d8073b1dc3ebf9f7ffd1f1f95531b1b. 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/QZMER2469974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281b9547105bfee29033698c915d0e4dbd08fc1f021cbb541706bb8392c9a529. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZMER2469975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95871b3d34ebf1a10df98074b1197fec96a662378435586e264a4875736a6991. 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/QZMER2469976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035b6b6e35ef7d287bf235d2952f10969b299c318ce9db0fb88496e6b7dbd9ed. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZMER2469977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbbeb90ea5e4edaa702b5f0bd8c67095b338b2f2a4a480e691c93cec24f2dc9. 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/QZMER2469979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8f967567cc15db26db4a0556f6f5a3087014cdd8b70582ddb87dd183447e35. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZMER2469980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9bc9057718d353830bb083f77906942d77046cf83b398352024c275e081d32. 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/QZMER2469981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41805b027695eab366de2046af691479c314ca285187c068630030581b1bb78b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZMER2469982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323981c23ce8a70afdf7bb2434312d9a3e792087b7199995be5f1f0543e965f1. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/QZNWU2471817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e5d769088855771733f6d4ee4398f96cb9242985a859ef5afb8802760bdaf. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/QZZ7M2447906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d7086ef843b383ad0ff3302ec88ce4d48e8f87e6de89860bbcf4f00829e5a7. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZDA72511210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4a33299fc306ecbee2be7118a8d57500b49a5381e036ba8b044c19cf4ff8c5. 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/QZS7J2599931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e54d1dc1360cd3587229db921ce464f97a622f775dbe4217d90809601d5e0. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZS7J2559250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df7e3d8ac1201929028a03ec1271a0746a73fe50890e512d011e6425773bc70. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZS7J2548798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44637141896efd210482c31414d148cc8d2832107da784738bcd56f96abefde. 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/QZS7J2597495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1956670c35196ca549fbb489870867564e17a53a9dee0abc62d67d264314548f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZS7J2552838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f42a3f6d72f4ed96e7e1a36390293f54035fc97651bc99a7697c8c7f595815. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZS7J2590898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7a20dd9fbd4971971f3ddf15f020e8d05c7399ef27d3c007af2fe64dede12c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZS7J2539610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8423dc1d65117fb571a406709a87e963caaa5e87ce6ca4c1f37638e6d586cd96. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZS7J2534045.