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 0xe2a4e660ec8e6a2787743fca461e5d440aaf32a757f5668d36061bbfc6383227. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92780fb0-4a8a-403c-a4c1-6df827a078ce.json and https://artists.proofprofile.net/proofs/artist/92780fb0-4a8a-403c-a4c1-6df827a078ce.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 0x3535225fde21bea78e55dbe7701afe1693fabe1b79a6d7c9073367f19f948724. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZMEP2409043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b09769b8533bdf856e534493c2906de09304f16f5b186353c628e0aac6ac3f6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEP2474793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce4b73309adbe66acbf9d82d33a78d4e6c170668172f48240a6f65ceaa569d4. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZMEP2409053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb8445bc35f2b9aa9b5e8e2a6e17fd0a9d3e7e14bdeea3abd29bb7fedd0cab2. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZMEP2473037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a88609b2cdaf5cee21e1afa5466e35dcffe2efd3820ebeb550ec883999d402. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:19Z), 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/QZMEP2409093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3db13a3b5ff774da3ecd43078dad739259b7c966ee7703c956b2d26999ee45f. 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/QZMEP2409166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f23f83f7f49e64f1adb52e0b474cbab408616f1be5fe8b6b7710120b0e8e5a. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZMEP2409224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5082c26766df100e7c59f5ad4d2174064826e9c5e33dfb30c2d38a018a121586. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZMEP2409284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e419b6bbe3850a2ac8ed0532bed9bf6f95c13f674eabc1df34a770613602347. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZMEP2409291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf475fd8460243cc0e349d4e2d798743a977a869e95e7a3c7056db6721844552f. 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/QZMEP2409358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1560dd2b6b54204be0e62fd41fbc61ce50ce19e6a4e57c5f618d22fffed95a1. 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/QZMEP2409373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931153c67b6659864e31d95a3c8f70c2dc5ca35e7c1a98bca8a82acdee9ca175. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZMEP2409425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe323d58e901a132ca355cbb815d71709492bf3c18b3fc72c07fb94806465262e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEP2409479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f944988d806600fa99a9cb9019b4b99cc814501d339ec2328632af2110e66f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZMEP2409529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e12e59d432e9eef820e2a4a790bad7ee6a5eab1320b9498fe60ff470ff94142. 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/QZMEP2409558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d72c4c0731e9314976eea65c9b335ed9425f47e71aaafcb0cd86860660fb784. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWS2460400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a724ec9e43e9c7dcc80c5c8f9afd3b1017dd1ca562e776075e3c6af008f36cf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZMEP2409647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7382174de788f97d088aab5c8dc96de13c04394b25011bb85ef55ee5567e1b39. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:08:55Z), 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/QZMEP2409660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6973116b2b808a2646a3fba8afbbfa123cb13014367ab952c9eb2bdf18e2021. 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/QZPLS2496814.