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 0xa2b4149f47b8739f6cabc3115b4f30021735f164e79bef52b393ffc5bbe98671. 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/ebde3e7b-e61c-42ce-b168-4c1b21f13830.json and https://artists.proofprofile.net/proofs/artist/ebde3e7b-e61c-42ce-b168-4c1b21f13830.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 0xd82564d40505d5c8bd82c0b77a9b83ed5675289750e06511817d3566b02d4686. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QMFMF2393562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6cfc3f2113eaebbc85d04ced294a58bd497c4fd1eed555d6069e647b8d9093. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGI2291319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff65e6fd50fe1c35ad1166983d422b289d6717b8019c5bffeb18d27f9739141. 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/ZZOPM2236101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ad5f909e1b6e291ff3b3eabaabc85af6ff23640c85db502db9802225ae7676. 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/QMPAQ2100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da285106e03c01db288817c0096ef8f098c16b8aad6340491e5ba25c0866966. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZMZ92094648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc713e807ac434ec304d1354cea4342c5d326f57dffe61b73e4cffb52e37b6066. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/JMA272008915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1a4993364e8ca78bc062ad23d25fc6577b4a77bd0d638a8c777846b96c2d2e. 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/JMA272008916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a42b101d51de14ab656da7d8d99e76d6dae088e5fedced6b7b72bc77a49255. 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/QM6MZ2048120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f37b66310ca23df2bae8774db3971b4f51cc25a1e2ff5f35e4eba3b19cb8368. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/JMA272001202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d475e71c507d61c9acebefd1f20716d13e40f1dc5f28e6cbdea4be59ba2060. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZHZ31976244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d95fbe1949ced8adb032556f1164c162fe85ad145f608c9f883f293631e075. 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/JMA271905541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93837cc230055abbb3419db95d16dd04aae4568310a6d28a8497db964a4de41. 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/JMA271905124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c10a8cd38efcbe8fcf679c88e52fb37ff72c532a414e2363c07a4cd4c167f6c. 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/JMA271902783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6579a26ce5979c822de3de9146476f0c5a86be78608e0618c45edc0b115ccf60. 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/QZHZ42091117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9a91100e62b6b69df1af8eba6b860b5cc09e89ec43fda2a4e1046654f52624. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCAEG1956053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31716eeae6c36c7790e8769bc6915f983a990506b39953888428b5e30f416217. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/JMA271902386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e67df779474c8bfdeb1c2dc11568c3e492d30cb094ddf5219834b016a296fb. 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/JMA271902387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1872033cd494e6c2807b569bb2bdd4111a2aa695aaf48247cf612644dd2ab1c. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JMA271807115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749dd782b7f141db2cca3bcd0d8727e6306224a0d075e6ebd92307567783aefb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JMA271802989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2e8d0dec9aa1b17f894a107d27657733878ab003189f7506a4ee2ed1949cda. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QMDA71865840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30095a07e5508dd23564748a44ab448c8fd9c1a54082e43a25bcc37cc49873b5. 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/JMA271800587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc2720c261eba76d5b5cba56876270b2f74b0c70f4b8256d661c7b856c900a8. 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/JMA271705648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc32ab45c011d1e6c9d8ce2b47ae890e1664dd552571c9c24fe081a3a498847. 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/USQY51796472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134899b56cfe0051bc3c720c4bddcaa1b6bb72dfbe1843effa8fc1318f96bc1. 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/JMA271705417.
Know How fi Dress (Produced by ZJ Chrome)
Dancehall Tide Riddim (Produced by ZJ Chrome)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1312536b5e571db5c350dd1504aa4362b7157a447d2096376b569c1a92081fbd. 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/USQY51790866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e10cc21a66bb1c23c831c9f608fc53efde36a8651eb83eecbd73a3e1a7f5cbd. 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/USQY51790867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12473bacf62512e30e30b0d0541a5d854f555bae2f342616a610c1bbf1c38d9. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USQY51790868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388c8c463349b6e7d49e55f4060aa90ebd776caed17cd406acca2840fe9e38f9. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/USQY51790869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f686daf375592231fe7116e18952d21913fecbff663a207a6d7982c97e640b. 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/USQY51790870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3160b4b7bc838582ecc9b844148621cfeb8d48fd54ad64b3596b159feffcd8. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/QMLD61402306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e08e083c2092246fb249aa44ea7c422734456cea7e73669633398ade0773570. 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/USQY51756050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6e881499418840315a60801623c6accb35b6138e6c709495e1b9b263e2dc86. 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/QMPAQ1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d74ffe435819c2fe725971a92480d8557a950a730f6d7566885b0007de10211. 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/USQY51618443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c6b5dc3a744414dab08c834a8a5e629c508134e10749d94bdd69530b207596. 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/USQY51618444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83a10472b188e3502ea23dfbdca82ef1aefd7f9ffc659ce12945caed7cf3e3d. 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/USQY51618445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efd9d32158063b674fbd168f078fc7179664a80e02449881d3eaf34647f3eeb. 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/USQY51618448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c742fd283c96f5bd423878acaf5d97f64ef1af40a664db77c1dd8b10c820b19. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/JMA271605039.