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 0xa71ef8c8e3bdcc18109e9793094f560350b4a9ab07d48831cdd94be82ae7f49e. 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/9e4b7248-0448-4de5-8c12-31a719af220c.json and https://artists.proofprofile.net/proofs/artist/9e4b7248-0448-4de5-8c12-31a719af220c.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 0xb99c462a5f2a9b27f929551f38c4305ecfa627a1ce5cb85f24006c55d489bc7f. 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/TCJPI1999782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c773b6891cd232ab2078b04ca221853010f87d090ceee357f6da645ee470a8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPI1999783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957cb7deac4997043082eb84c38d12fbb421127a9337ab864853f4c119208c49. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:30:01Z), 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/TCJPI1999798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecf55f817786e76e0edd19179afc00fddfa1ef20d2804c76fc6c9b48e9297b2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:18Z), 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/TCJPI1999800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99c462a5f2a9b27f929551f38c4305ecfa627a1ce5cb85f24006c55d489bc7f. 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/TCJPI1999782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08fb3e632ab502a13370f9ac14d38a04239989ac828b949f33afeeaeeb66547. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:21:26Z), 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/TCJPI1999784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ab8bbfd9a411c27c0110bede6625bc76a429864c49b840d44f8be79166084c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCJPI1999788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957cb7deac4997043082eb84c38d12fbb421127a9337ab864853f4c119208c49. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/TCJPI1999798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcbdf5e98024d1571d913eb6b00a7f82d67e446539d8290225f4b477246eecb. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:44:33Z), 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/JPCO00329480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0b7eb04e28953b2d2b2dfb89d29c7c952f159b1b32b469bd394572aaa2239a. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:23:44Z), 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/TCJPI1992796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb1d99d58bf1a2f6975df99518c6152f3cfc92cc69b4d7b26cc9b8c1b00a4ce. 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/JPCO00412470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa171b318daa0f3ab3ce876a297417fc4ff06f58ef7f79b5929bcc42d7f58ea09. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:39:54Z), 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/JPCO00412520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5235308b62d95cd0599df4bc9888a2178b61234c3af0b5e23618cb57c4f884d1. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/JPCO00412580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77d50464b0ee2b90c32b01c61bb94d3af278502e39715524c2433922d738765. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCJPI1992888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20000d1dba68401d6c337b46acf5e279f68d819d080ef81a585164f7c443068e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPI1992889.
Nitro Microphone Underground (feat. BIGZAM, DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS, DELI & GORE-TEX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34bfd7947039f24af46653934f2ab99afb22aedd9d5bbb2fc8c743e72678950. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCJPI1992879.
Live 09 (feat. BIGZAM, DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS, DELI & GORE-TEX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce89868de6d67718a1691b8ee54ed173593ce9e94d5a9d06b25c11945793e82e. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TCJPI1992865.
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
Straight from the Underground (feat. BIGZAM, DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS, DELI & GORE-TEX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540075c37a1ff5d0a0b95a6b5bd5f7a635b5e90b0ea36c29623240e4660075f7. 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/TCJPI1992869.
Special Force (feat. BIGZAM, DABO, GORE-TEX, MACKA-CHIN, SUIKEN, S-WORD, XBS & DELI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c433cc993db3ee3d6a289fed1ddbd29b5070ab0e00f4fd9a8b3c6c546c2a49a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCJPI1992875.
Watack (feat. BIGZAM, DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS & DELI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b92fd97f9ad549da2a2ff137ada6b5bf9a40a15e88c39e6861f100c56d04464. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/TCJPI1992877.
Nitrich (feat. BIGZAM, DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS, DELI & GORE-TEX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f0444a0ccdaa99689db8bc5060689489533d23301c85791e0c2a87cd14e4334. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/TCJPI1992882.
The Chronicle (feat. BIGZAM, DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS, DELI & GORE-TEX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f4153421f45eb25c7ab8eb0a84ec9dbc7f2e1fcecafd3f9fa69ed6ae5f50e1. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TCJPI1992887.
Uprising (feat. DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS & DELI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02169a6c98bd4216bc3f76ca82a28dd4ae939dc19e53967295851c9026ac40b4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPI1992874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34bfd7947039f24af46653934f2ab99afb22aedd9d5bbb2fc8c743e72678950. 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/TCJPI1992879.
Still Shinin' (feat. BIGZAM, DABO, MACKA-CHIN, SUIKEN, S-WORD, XBS, DELI & GORE-TEX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f363c1a84de5cdc1d0af5fcfce34b5964e1370bdf5ebda19f35e07625eb3d95. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCJPI1992883.
The Present 4 Real (feat. S-WORD, XBS, GORE-TEX & SUIKEN)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7430cf79df5963dff037b04870587245bbd9d38ed4349bebb500307d14f79629. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCJPI1992886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5028e2e92cb3950cc865ae5f48bace9fff47819fd518661563c1522701ce2e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPI1992916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4650ab92bdb934e7a14740c0407175253c632f4491a89816c83c81965e3a9d18. 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/TCJPI1992917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9395959002a66a43ea542ec8b0cb9b3bbd809288b8a94bd1567b15062f5595b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPI1992918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce00404b188818264816cfcdfa0453a2b9ad330d744af24837051a15745e6464. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:07Z), 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/TCJPI1992919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35daca365bdc13caf9d2c0cbec92d3054d9f54de8dabb4b1a48a8dbb0ae353cd. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:56:48Z), 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/TCJPI1992927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3f5b80f8056b90ab66193abb303bf4fd6914a296509063e967814178f506d3. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPK1924463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aeb349c130ec35b16e5c8c36178ec805fc0ea41c7cfe0114d8f2274d1af411. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCJPT2255472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e988e5cb560629963278d9fb76831b585de7d21dca6ea5705a2ba5db0e528eb. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/TCJPM2007422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b83ea798bc15bb950df5262c5f9f311b03d68f6ffbe5d2bb9575f8a5f4e530. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCJPQ2146027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f253686696a29306cf54d90500da7abf8b8c3d5222b3c699d37c5d834cfb80. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPT2271837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7b1acbd26a033ed62db2ea841bab4408636801071c234b3caee41d98f71256. 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/TCJPU2200737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07a19a647efb885956e930b502d1138ac116770d56c0a15199d01600869cbe6. 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/JPWP02400343.