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 0x38d9fe018ac2baad4495ce15e17cc523558fdcd8b3497a143e9cd6d8784a6a6e. 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/8274f8bf-7f55-42f9-a288-281cff1ac43a.json and https://artists.proofprofile.net/proofs/artist/8274f8bf-7f55-42f9-a288-281cff1ac43a.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 0xc87fc5411e0398e3ee237a07e6755ae3a96b0bf883a741c6ec43a9814f345220. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21981958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49666b72239122902b6f6d2d4f56e6a6eceac08b05a6d95a04d6ed4a21a1d173. 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/USHM21981959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1dddb4a6ce1c18c68e3f91ab02d42136dbd659000e176a1ed496399e89bd21. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM21981960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53fac4f14202827c8a6bca28de3430531e7d8b8fe3067c80067fb9e5b604a53. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM21981961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a1d49337349c775a21b5826f5a888b3e3b26b9c6940b144670cfb2acba2cda. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM21981963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a72bfd0d1a7f7b50ec831f93ffc26958ce5da56f0d2b147930de704ff8ba178. 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/USHM21981964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb4a68e703e3f5ba7197b39264f6ae62ef6379a335b4857a1fce09fac841492. 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/USHM21981965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0112337c240ee9ee4bed4c26778cd7c7ff9001dda0c78b5fa54d67566d82a0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM21981966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8315723c31e2498f055b9e2c760e7595581f6bce0f6fdc413217ca0be5ed8ca8. 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/USHM21981967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa97189d1c467b3c933b1c1945db34471d4ae131cb653e9cea78cb81d0916f82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21981968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9357902948e0d581e6554f75ce49c3d7fed7de1e4ec934f0fbc98b183f285554. 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/USHM21981969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dbd0052f3ad01481228feebbbe6ae401fe596f7df973c28c52e2d62b3f62a9. 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/USHM21981970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f8732a20051b63710ea8a8252ccda39cb35cf11452132e484739cee66257e6. 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/USHM21981971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02593c5d753d0fe0f2ae61fb65a9467d4ebf1d8bf01f2f20ff4daf3508da302. 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/USHM21981972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705ba692e6f0b09b30fa3f3990bf5a0c96ac861e0c5ff7c2ab4019b3a2017401. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/USHM21981962.
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 0xd53e253116cede117a4342de78fbf74810c213616858f1e7814d81838f3eb9fa. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USHM21981957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1b2fce04bbb35058e6adbd37863ab503615831b4828312898a4a7a2c84864f. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USHM21981973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3b7009f5150e7ccf998f1fa029fea9125eefcaa5041c3ca2b6b2c40a3bcad8. 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/USCGH1956450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322706978eaa8d34062f3b7ec072791c6d7d09bcd549382cd88ec3415bc58846. 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/USCGH1956451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfce52a8d7653f36643532f124f3df362dff189eb69f65ee7baafdc70f17be0eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH1956452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dd7b016a14ab272258b8e4587acf644b7ad34aa9e959e6886852bfe821386b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USCGH1956453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb3bd9a5a62a4308ba3eb3b2d034b33f9935d51b1b52585b4cf225c7cb0c5d6. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USCGH1956456.
Gucci Republic (feat. Nelson Nhachungue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048459f23f03021cd992cc602c736438c89667a528f24ebe48faff38197e8a76. 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/USCGH1956457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9330956a1b67b099e777d940bde04d9eda5040cfc50d5f1b58806aea1a05e6c2. 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/USCGH1956458.
Diário de um Txonado (feat. SG & Muzila)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf59577fdc488dce449e943e2822cc1563b4b90a4ebbc92d28374e42c0475fc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USCGH1956460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5ecf0115fc0d6911efa2ca9daa5c696f372427915f8aa637d7a769eced8f70. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/USCGH1956461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0301589d03b9c9269321210f1cb65abfa2e42e971e5d1ea344c90a625b1168b2. 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/USCGH1956462.
Kanimambo (feat. Mi-Mãe & Daisy Pereira)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bdeb8a84a0ec516f96aa626a731b3a9ade9e71e166baf43750b50441b172dd. 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/USCGH1956449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e43d66d5b3c9babca1c1d5da9054ea26d22b529dd3c07bf64a6214e4794703. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USCGH1956454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cc26e8109e7295dfbb576d57eaf01b487eaa32d6a0a460383dd41ee469bc11. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USCGH1956455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d13dedee13ba02107a1469e489eaad14bdff05897cb2909328135c863f5850. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USCGH1956459.
Celebrar (Bónus Track) [feat. Kalashnikov]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213f0e972ac523293c021e21209452c82436c92160bdae450629a8edf68a3ee. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USCGH1956463.