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 0x8b831b3ba3ceca8bfc81b8e0e51d1b86b375ebafc184a5df69f4532e70925e95. 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/a71fa1b1-73bb-412d-a39e-c428c35ad606.json and https://artists.proofprofile.net/proofs/artist/a71fa1b1-73bb-412d-a39e-c428c35ad606.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 0x81f733da318fbd0ba30f4870431f983a045a499ec103cf3317d14f28ec746de0. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/JPX600300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6449e2708247fe81986abae0b03dfdd3ac5b563b58ef762604f0bf2b55c8cb49. 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/JPX600300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19655b8fa2a534c0beaa54af2881139f95a53a4799d2fcef35cc70b2eb73aff3. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPX600400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c71c15ded21d296307332eb325faeda33904d0a3a2e3d0dbc244c1fb6344c31. 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/JPX600600209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4f26e6a1721a8807c454c0767a41e1cf311bd93de42a8a16894a77d66dfabd. 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/JPX600700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861b457270ec9ece40aaa7a01cc822d52f4bf4ba2149403eae9d829295c96245. 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/JPX600900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0740bbfda430778fdf128d76a015cb523ab564cb4e4ab32528d2d85b88e3c579. 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/JPX600900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210a205035fbc4d92944fc15b8c8ce85a178e39f4dfe1cb8d01e2f72febc6101. 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/JPX600700040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e696e67547edecc0c92022f9cdc0fd484309b65034c4306cddd44376cdd80. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPX600700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a25efd99da0b4e69e683743e855e0417900d552496a4129c207a814c42107c. 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/JPX600700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86e62cf8f5d25e79e26338e7337a4f34a9aaa455ce4749dcec1475e0893780f. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/JPX600700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e4976e15652e1dca5b0d567d852d995dec7121c20289c84a8e45d4cea5793e. 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/JPX600700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9191f83f15e00d7ca001c592f5ccbe9ae68d9ba98ada8499e4faf0c22c1bfbfb. 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/JPX600700052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8e143954b8de227dab285b1cdeb8f08e642dd1c11ae26a90c27eaa3e9c82a1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPX600700053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dc9483d3dfd5ab2a1c621f6aa90d3a542779595400501b94c47122f01a0ffa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPX600700069.
THA DAYZ (feat. GDX, AK-69 a.k.a.Kalassy Nikoff, North Coast Bad Boyz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e42430850bbe3622e1ca9d80c89a571705e124c0148196d5fe6184eac779b82. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/JPJ901608750.