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 0x875db206f13e889e95f6e93aac128c737b1acc591be4ffed4f27c8e746ff813a. 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/9b71beb6-bc01-467f-8691-c762673ee007.json and https://artists.proofprofile.net/proofs/artist/9b71beb6-bc01-467f-8691-c762673ee007.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 0x4be79316579806bec16ad6f72ae293bbd3786cbcfd94d23d9f9f6b9a9353c1fa. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:41Z), 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/QZFZ42176049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6394080e27125ac9cfb8c70f26d5b4117175477850b741c9cf83fd6e58d8d96c. 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/QZFZ42176048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8063c92af93ec831dc0183e58f318c41fc3708f9054d030c4d65b4c51f8551c8. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZHN32113500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37c94f4d8972b0b4b0cc5af20ada4534e44accc3645cfdb5b997ac822927f23. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/QZHN32113504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a50734a557c1d7505bda768ffcaa71ea9ea5172d94c02e9f5a3f83e168d788. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEQ2170555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9523ec349661a531b5f0e8cf4aba15a1be809e40cf0bee608e2090e20edcd82. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:22:48Z), 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/QZNWW2229439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f00188dbb3e4babaee8a2776c70cd6c71d4d2c806b1d3930ad6eff8371822e. 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/QZNWW2232875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055c3c33144b58bd841ea6e7d1cc3f33f4d1abb55c9a8790aceffa9e4935259a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZDA42382188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951070bdea1f1334070f50cc58f537ed0f3cb038be992f8dbdafb8170fc14b6a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN72380224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf191119e68ca8e732bbc4603b7c03e0a34ec3a4cc7868666b136bd2f0d3097cf. 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/QZTAU2319588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4104cd1a876b20697ddef2ebf1e6214cd45a21bcc505d9574531be8e8d29da. 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/QZTAW2357949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553b9e50b49e6509fc248f7d378898604faef2fb4bfe5a70400dcb94f0339e4c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFYZ2416768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f560fe6b4a22bafa8b79b857f644d3485a7a88c154233ded8765b8a8f77a6f. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/QZFYZ2416777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fbde4fb8c06875e49db9bdc3fa11d24fee8b3eec7ee5e44dc1d9e500854db7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZES92420938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce9011391575b2edb53b7934da703b53c9e3c3f1666bba311dfc518c0e92000. 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/QZHN52471721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f158acd27462d1bfbb1fc7d3d33dd31f1b0c10167138fcec7eba25135134135. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:13Z), 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/QZK6Q2479569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f25bbada8dc7753fcaab4d11f759524de53fd6d458b288cd128466c37852c1d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWU2429467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e2260620af5d091b6122df0b6fb882dd9c896802db87863fa8469d98f600c4. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZWFQ2529838.