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 0xd17d7f090d341d5b5814c5fb0c6b687fc6aad6e28dbd6e6f536db6ac09f66dca. 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/aac99423-b2b0-4881-88e7-a93371ab0cfe.json and https://artists.proofprofile.net/proofs/artist/aac99423-b2b0-4881-88e7-a93371ab0cfe.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 0x6440fc00856a9e9609b1885a5c8e284f557d60a466507972e85974e4b351b41a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/TCAFB2070642.
Berlusconi (feat. Jake La Furia, Nitro & Speranza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6929cfe30433f4f676edff49902fb0aebfde9fc1963970908538d9a4b08371. 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/QMEU32118134.
Soldi in Black (feat. Emis Killa & Dylan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee978a257c17f036dbde783c8e389e0bc555709b17fcd6ecd2ed530754a69708. 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/QMEU32118135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e0253ab18c6eaf6efa07338e8cd3a861c92e044674acf468fb57287fee70ad. 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/QMEU32118136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa314cf36c560bc76c61d9118aebb3847d59bef5993aefb321ac179b2d3e96486. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/QMEU32118137.
Ready Battle Fight (feat. Gemitaiz & Arlissa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf30f18d0b4be587fbb87f5445158de7a0e4f632bdbc9ad3343e57cc338f75c9. 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/QMEU32118139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb634ce536d266d077d2045c87f3ca817d9f5755c81afb0e63a76fe17b5cdcf2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QMEU32118140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf33671d06a96d68571db5e3bf0ae7aed6757f2941dcd591708b3130ba47f5a. 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/QMEU32118142.
Mike Tyson (feat. Tony Effe & Kelvyn Colt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b783466bc33f4a4fcbfdeeb64060f21ad3b675d8861e70905b522117319096f. 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/QMEU32118143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b05f965395c6ba71b93625bfc75e5039c3dda56c22911c19527c86a5c6cdb2. 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/QMEU32118144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf463a80ecbe544d26fc96ea1322ac28982c43a4ccf546177b74fc4b46d14fcbe. 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/QMEU32118145.
Mai Più (feat. Nicola Siciliano & Wayne Santana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53beecaa8586396d55c81f1ef0108bc2a9f1ec204523a74a2e90b663d008a9b4. 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/QMEU32118146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87fb3a9ef97363fa091c9a95fc112825bff211f66711f91accd92a8f568829e. 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/QMEU32118147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d09bb8fcf3104b03d6456202cf213a68661d9a0dd8df3c0f561ae0adf3ac60. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMEU32118148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462e1c15c8e321fec80fd0881d4bbb72ffdaf24d644325cac4e91fdd0bfcdffe. 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/QMEU32108753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32140e3d61442c6f5863432211c2a5c876f52d4a74b1f2243933abe31677eb86. 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/QMEU32118150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec987cd23f06e8a770e2747b4664677fe1c963e9417e1227742e87f3f30a3a9. 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/ITYG92300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d4507003af9d49116554c5b1260d4a284e358dbc0a4b7e1a15205c90146a84. 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/ITB002200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb32cbf3fabf729ab9c462ba0460e2a9dc750c78489eab864d9ddcf290205c8. 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/ITB002200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec987cd23f06e8a770e2747b4664677fe1c963e9417e1227742e87f3f30a3a9. 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/ITYG92300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cea92794f1b687da6204ff49fcada100d21b5aa47127d12fbb2f193f2e6521. 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/ITK191900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b13b9329f5597db00db7fdf4dcfa083cc1fbd0104d86b7ed3f7e2d26fdbfd2b. 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/DEE861904421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f18dd5488142b53801130f72f92c4b473a617e46cc1410f2b1da7a31dab49b4. 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/ITC6Q2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97aa296327dedc17ec6c16efb2bc62015a4f9b5b7a6ab58d28ce696f843aae11. 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/ITC6Q2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4044df615e540a266223595bfd2aee7a40708e9580c55b727007cf5651ba9041. 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/ITGGO2300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e547c784de4ee49587aad91444ed3f6d81e1cf0962961bdeb9fd95c478178c. 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/ITGGO2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfb841199ee6829ce5a916f597c1a81f588d61eba99bbe6eb89d1acbd6cc4f2. 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/ITGGO2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4026ec161ddc3b5a8096d26d120f339a8c8b81e8e4f9fe0e3ff70fe58d74aca1. 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/ITGGO2300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fda86f07103f4271b0e5d06ffb209050e780f67894b405cdb4f6ef299a3b1e. 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/ITB002400784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1864c069cb6f544d203a96d96d40b6f73a0ad1aae168795bf66be3a9fee584a. 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/ITGGO2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888806fb29c062e5ac5f6770b76fc7e288c20445093b955e394642e76bc70f51. 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/QM6N22089714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62437a3fc857d4c1366d08862f17c983c059e62b9a0904874a8ef05b6fc2271. 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/ITZRF2400075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b6c49ed516f29b2da0ec1d5e61d8751711b45c962d15c0c09bffd9b0d2f951. 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/ITUM72000298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b6c49ed516f29b2da0ec1d5e61d8751711b45c962d15c0c09bffd9b0d2f951. 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/ITUM72000298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0fc298f8c6ae7ae6c3e71cb363b1ab1fef6d699a6e4f03204296082cf7c62b. 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/ITUM72100136.