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 0x399e76c75b368882644d804ecf890bdfb70df86ad8a4261e9b94555250db4480. 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/fc72dd39-50de-4b53-979d-041dc26dfd53.json and https://artists.proofprofile.net/proofs/artist/fc72dd39-50de-4b53-979d-041dc26dfd53.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 0x88524f583ab228c12cf3783aff7aa6e8d39cc9dd8592ea79e6afb23bcc8c8f9a. 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/QZHN61935931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b762cccfc349399589c49024abd20b1c0e4311cb1cf4dbf0a9fc920fb4192e. 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/QZHN61935932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3bc590d710d4a27f3289d9dab54490057b98af5a05a05de503acfb0391d7e7. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZHN61935933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84bfe4c75fd7d6ddc568e74fbeca887e71085224f3bf4ae81e709602a6cbc23. 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/QZHN61935934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4213b8ee9efee780f29bd56fcaa2e4e49771edbd41c24f248c652bbe54dd4b9. 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/QZHN61935937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6cf58bea3ba75ec8600786fd2e271e4a8d111a174fb87c6a4aa104eea397f9. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZHN61935938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75814b842540dbc062ae05ec3f039b6f1ab758f0990b38bc4f78141d98a6d29. 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/QZFZ72001310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce912eb9c80eb282c07741a569d7562332f57953f30aa7982643212b5fdcb11b. 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/QZFZ72001316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9931543dd2981ac3e6f382e305252d635f98cc01c3a3ded738379f705ee704b4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZFZ72001322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd0341f54abf988f5b28aa75854151087e01a35908c5adbd6707929430d9262. 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/QZES62035007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487efef3c10e6393c273bd8259eba39ed57d70839e9c5b2b6ac16308a0288396. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZPLS2031698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72579cab7fd0b994ca6f0e9da56d52f35abfc5f2f9df4d093e1d9c55bf7103e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/USUYG1520295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b17edd3312cde4eabdf77b123b04c55b7305884cad549eb73de031f70c35a1. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USUYG1524105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bd7c06166cc380ad5882f007818ebfabc8885f8ba95ceb25ecb3218eadaf53. 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/USUYG1524106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5c59ddcf9644b096678010398d28bbc96dd0803140ef8466c09ce6afb7b2ff. 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/USUYG1524107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff937efc90b33f170289fffa1bacbc7b30dc080f86c3f56a1b7d5c054780dac4. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USUYG1524108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3290a8ce323017383911deac3cd7c98d118623d4886ffb5a4d6d730914d5c0. 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/USUYG1524111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aa91604a37eeade5611a65d3a6f9ef819f7487d76a9c9b620de758025321b2. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/USUYG1524114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ddda3275a84bb842f0e7010369e925f7d8c137ba068c296331c55372a6bc41. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USUYG1524116.
Pray 4 The Weak (feat. Auntie Stephanie)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd990840e993e2b8025a1b7b75f376bc34d90e101517289902ac967c58e919c. 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/USUYG1529000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2560b66a205cf21d0dcba312d470cdbc80de4fdd518288e58d6a03d79efea6b0. 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/USUYG1529001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355104eb2f481399dccab91c70b844f048122f348b52b1f613eaa6b1cb6c2a95. 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/USUYG1529002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2713597336cc975c861fdc3bf6e7a368cec6e2ca93031837951c0d63ac34c66. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USUYG1529004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b2fcec1957b2df2299c7195cdaa2506c60a0b972ac364182ff87c2d7c4aa4c. 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/USUYG1529005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9857ba6a8be5b458bec235cd1699b9456d99973f84ec0644e6f588a8554349. 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/USUYG1497229.
Coney Island (feat. Los & Nutty, Bandgang Javar, AK Bandamont, Glockboyz Teejaee, KrispyLife Kidd & Nuk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2b5c0b4fb4604b2430365792ad24255a5067b9951dc80edec485551f7dae5a. 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/USUYG1509885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28af6dc2f47230c059e1a6462db5b755d1cc05d7dce313398af275d40cad9be. 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/QZMEQ2172816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731d97abe32baf18140586a838b96d84650afa01115d93d2daafcbaa109fbb83. 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/CA5KR2467097.