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 0x54c458a807b62484a113c897c939686c4a017fc7f57ced411b74c29dcf76f901. 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/497e7485-92ea-4754-bad1-1358ef985ecb.json and https://artists.proofprofile.net/proofs/artist/497e7485-92ea-4754-bad1-1358ef985ecb.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 0xff14e5ba235d44b326da16fbe7f011161c0a930507da0a305f2de8e163ee28b2. 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/QZNWT2370936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd73528acb95649bdca2c395ed0061d5f9ebe9fcc61b16ea32adbb2203a842a4. 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/QZRP52302911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf25298bcbb233c8779ae0b7386d4b9ed827115b61e737608c6cd8d4c9a9c1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN72344710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a02afa9f7e6dd5ae418a441707d5a52955d6febfdf7e2f7546bcf71e230da. 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/QZMEN2347381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3101247f188b7e05a3d23374c1c684fbeba1ae218ebd09402ba9991e0b0d1ca5. 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/QZRP52302912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac6000caad56679cfb1ba2cac04b923e0ba9401cdbd335be351d21ad984ac36. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZRP52302913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ddd9ba5f12ee28a4565124df3d9b39068be4ac946c00516c323e315b5093be. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZRP52302914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295f18314c3941522ae2b299b4cffa191d0e1477f0a2163d087603c064be5ffa. 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/QZES71883652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa690105284c1148a69dc205e6e17f49e5b41971845bc97aa8bf575a8f8794350. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES71883653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad028ac66a1098cf9c76c8801bef5e4c3117eebf83f9472c2c6411a649d6c67b. 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/QZES71883656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35266f10b8c38e47095b579da47ccb3785ecf6c3a57321cb62d3d69da5a4410b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES71883657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314e50b06a3a4ab986f317eef1c2665637b32149be9a789bdab59fa0f7d7ce06. 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/QZES71883658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58bd1edec0e8f019946b8c765f7729b3649a437de858f65f3e6bb9ed370f51a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTB82428578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51cb84b7d75f5c26e224552dc9cefab44dbd0048ba326dbb8c44587ee446bec4. 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/QZNWV2412038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff14e5ba235d44b326da16fbe7f011161c0a930507da0a305f2de8e163ee28b2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZNWT2370936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5a02afa9f7e6dd5ae418a441707d5a52955d6febfdf7e2f7546bcf71e230da. 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/QZMEN2347381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf25298bcbb233c8779ae0b7386d4b9ed827115b61e737608c6cd8d4c9a9c1b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHN72344710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5c32a3f5b14fb33883b11c313fac851980d9df16b31c2e1e3f0bdd2b325584. 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/QZES52313380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbfb53a19d6b4398c07ebc7a1dd8a91674bf8e1cd0717a65a4f9fc362a6cd2bb. 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/QZMEQ2220473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6955578271cfd1af7f9b759ea64b40fb604e266482e3773cc49fa57d80e0a3e. 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/QZDA82266066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba794adfe722eeab42ce405e89dc4e75b6d5b716c1c7613b6889ab869da2146. 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/QZNWW2072819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e5f6e2ab54879d17cd56ad33500867d8e822a9ff74d72853f2b704bf4f6a4. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZNWW2072820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f8ba66f744cba927edfd55da216ac503ae565f12e5bd83fb9123799929c2f8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWW2072821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad2d70eb13c8e332d47f51cf6f32331abd9d842548f85bf9f3e9013fed4cb8b. 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/QZHN82005762.