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 0x8c8bea28d3dac4d471b2abad8c395c9ac02e4b005c7c29940b7f7f0fda8f965b. 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/531e80b1-bda5-46fc-9932-5d1837776cb4.json and https://artists.proofprofile.net/proofs/artist/531e80b1-bda5-46fc-9932-5d1837776cb4.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 0xb4a530f62942ca26aef825e9bb3e9dee5037547515d0d6cce95b0708fc6b6939. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USUYG1163359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182fda4019a9fb01ede3ba50124fe673822f84f63ea91018da86b11721100883. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/CH7811113709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eef9d47307c71e6f78088e9aaa1dde8f74c489c2cfc3c42c9608f37392cd362. 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/USUYG1252815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843a17faa28f8e1f4a80d3ce806cb3f2b428a17ee7e22239e2f39e6b843e8c58. 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/USUYG1252821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c8b1d894d68397e8565e1f7d4a195db4af67b0cd7bbe63d658bfa63f472bb5. 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/USUYG1252822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ea1fb9b7671b981339045a6e31f905c5bba3f3b78d3f6a07b11d657a9559ade. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USUYG1252823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb211289f695869db5707e724af93fa2e3ccf457bb3651fc93fbb02f11cb91732. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USUYG1305051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ed3e7e147c3cf2ec061867574cf592e0d5b990e25e64806cf7149880cf2b44. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/USUYG1305053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0249b3c52a6a3dc7f1aed394582c6abe424c8e93cc22debee7451eab2ba41fa. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USUYG1305058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdf6e139ba68085897385b2cd87443e6cdb0e409e05881fd537ce0beb50bb93. 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/USUYG1354223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b1c9f423db10cf307dfe2b69c548f60d252e60b57c5870a0fc88dcb1ca4aac. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USUYG1354226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c318749fe3b9b7d27e45dd2dcb297be0aaa9e015ca5b856edd9c25a4105db7d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/CH7811106677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8de1cd1cdba7062254a935ab0cb0884dae9d7e30dd1b6c415f0718dd415ed3b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH7811106678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc2622f0c0023d3ad266c9f5f40730dbe05c483ddd764b55a1f449daa2c013b. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CH7811106680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76469539c7d4561467c840ee63088cb131ccc6cadf2cd4bb8031b164e7796cb4. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CH7811106682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599956b71f5e13b9412a68ab0f1ecddd683e92b69f14e0b6e3ddf37666ca4cee. 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/USUYG1528633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f532c2adf398282f640951053cde3b92fcce28bbde7f871ca91778be591e59. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/USUYG1528624.
Let Em Have It (feat. DaBoii, Yhung T.O., Slimmy B & Shoreline Mafia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc919a7343e2c47ee597b3c0fad88da2b00229d5b2dd01302b022fe5a4315f2b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1218295.
Intro (Gangin) (feat. DaBoii, Slimmy B, Yhung T.O. & Lul G)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f45192b6b0d99134039b1feaa25454c872990e919d863aa7c5c469e245c12ff. 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/USUYG1218290.
All Facts Not 1 Opinion (feat. Slimmy B & DaBoii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917fe77e2ad6194547c2b06b65cc3c90b13e9d3311e479eca13902c266038617. 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/USUYG1218293.
North Vallejo (feat. Yhung T.O., Slimmy B, DaBoii & Lul G)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3ae4e761572d1c5ed86a18141578be5961fa39583379277f0562e0094eee75. 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/USUYG1218292.
Leave The Streets Alone (feat. Slimmy B & Yhung T.O.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f033f27350dae7967c86340a773f22d76f2b6c23b6f6d9fea5fc7676cc8ef35. 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/USUYG1218301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d1cbb3800e70132508c7ab61c5341ecc6a72d6502cdc0715fe3b0dfc9d0954. 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/USUYG1212598.
Water Fountain (feat. Yhung T.O., Lul G & Slimmy B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ae12ea446470068e32d3c1c8e8c225b8ad79b76d7e556d168fc6cc07047a0c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1218300.
Hood Ballad (feat. Yhung T.O., Slimmy B, DaBoii & Lul G)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731f3cb1ba2c753e812cb02824d48bfd39df3b67cb8c6d6717952e1a331ae4f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1218291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5928ba41f19e3f4015c087543c652d0e0bb344ac270293c96cf6445e4ace5a35. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/ZZOPM1901544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9c0500c8f98c6fc24c45992049099e912b2614b3cb9633aa9d6c4ea5577c60. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE5BU2236211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bcef1ac4c086f0e5155e644d2335c938399e7603c14ceb5f1fdc5f736d748e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZOPM1901523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77291dcfad05ad7ab4fbab769680ecca5664bf93fb165eb679afcad55b42c9ec. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USUYG1300556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1189396da97aee494046b375d0f6179ed762e8371bb6f15cbdf5d7269f82c288. 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/USUYG1257504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d74ecd8cf7aca3f8e19243b5b3da11324a0dc8aeaa60124d482b5db6b9ddeb2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1138487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60a5a72365bfd3cd51452f03dae1781e3a753f017592c9a90224a15f54c682. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USUYG1413389.
Take Something (feat. Yid, Slimmy B & Lil Yee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc1671856929b920d40c4542eec1f996d8c3a5be039bdb70c8f06378709b9e9. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USUYG1187294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a36bf5de3dcd47af863fd45c87a0f53496d36891ae37c662cb33967adb32ecf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRC12004079.