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 0x30afe9526ab396fc07e4bd9948b9431eedbaeeab6e5d4a8ccca1c088482ed5a3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5f52c67-9b19-4189-b042-bed7421b9910.json and https://artists.proofprofile.net/proofs/artist/d5f52c67-9b19-4189-b042-bed7421b9910.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 0x512919ab327f00be09822bc41fe6bfb5764ac3963b32fa1978562ddb3e52d226. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/CAITR1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ff8e721b3b8f43cc86fa3503c9e1a2c682fb3876fcf2a1b00f50afbc2b5294. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAITR1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf51667248da3f2247d878a58324127cfd44f0be0e13683921612092df945a0. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:01:18Z), 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/CAITR1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf31fc4f5b3815d810ee3e2fec14f1cc0263916ff898d9f852c00f6df445ba94. 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/CAITR1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde99f42b5fdd1e79a3b0daae0e3d0cbecff3f9db0c011ef5b941e7bbaafe10e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CAITR1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33775cc438d69bf1cd817fe9a6279c990110bebc2ad8d2d255d5ffd612ce79d9. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/CAITR1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202f590abfafa149c74b5f6ae92bf99f0a6bde7562a1ee728d76a449b0070d0f. 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/CAITR1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a004e75abc8c322f7dfcf985167fda82c001c7813fb8406e0952951af6ef4. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/CAJMI2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb7d5c6fbe446aae443a8b5a057e6ff64c960928bbe374a22f7db537171107f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:35Z), 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/CAJMI2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1014a50157b2ad4bc3790ae6aa7bb618d51c71450cc5f46c9df34b8cd4e73382. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/CAJMI2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4716bffc4a617440b16786ae7c64a46c0276dad7d14d26ddd4df3ed1f1c4251d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CAJMI2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c41e6b72c02d6afa6941c6f22d66506e1ab7e78c95cee2c6c28e6db88bc7d5. 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/CAJMI2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7858a896c206d6bab76ce95c996519296b736322e510eaacd3bb7104fb56d. 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/CAJMI2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3f8415006021b3b319b401dd486605f5a2517dd3c91729df3496e570ab703f. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CAJMI2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9d10f3ea346fa1755c4b53b63dd46165871f5ff630d7b9fec1b08449115c58. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:05:11Z), 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/CAITR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef65576ff4ad780200e175c531c0c92527d0dddb2587279d7fb3753cbc679e2f. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:47:28Z), 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/CAITR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac61f797c459f87748a83d36bebe519d214900f44fd1ebf30c3554a2d9b87bd4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:05:29Z), 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/CAITR2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5e9ffdc9af0ceefc2cf4ec46acc54c99e559c3fa84a6187a9469f68c0b344c. 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/CAITR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96c400a96e9149c04d021244f667c510b0a0f928ea60c23405df53a2f3c266e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:44:01Z), 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/CAITR2400005.