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 0xfdbeac14cb2369fc9d62f11599082286e1a9fcd1569f41cdeb9949215b93c0f9. 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/8c120d1b-b487-418f-87f2-0852643f8e8e.json and https://artists.proofprofile.net/proofs/artist/8c120d1b-b487-418f-87f2-0852643f8e8e.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 0xc83a86baea6825bcbf14bf343cc9979e6ffea8b71efe3589881930905de3a012. 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/QZTBA2352317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6260ad0631fc0c2eb47086b55abcb8e6df9b64b3aad843bc60606f2af2eca5ae. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QZTBA2352319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7568832291ff50c4c51d9bb490186097f01ff01ad44468640d71dfc912108d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:55:32Z), 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/QZTBA2352320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4b516804a1e00237cdc6804675558a51b15356bdd1ee826e46acf1ed07a768. 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/QZTBA2352321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a01fd878dad87b2d9abbf86f589fe86dcf508996aef4b937c8f3a0b12681e7. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:47Z), 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/QZTBA2352323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec2be300f04f5b0d837057f7497af9149ccecabf26e98233d8a06701af43739. 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/QZFZ42476647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ac69a46fac587ddfe92496c0d7d51322cb75d873cb0d155a50cc158dcfbfae. 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/QZES92483134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba378c1532b17e091057464eb9325cda630f1730bae4d9f581e857159c3b15. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZHN72419019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411d3964cb6423cfd851b951386ccc394901739930bbff0c293520943f16a81e. 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/QZMER2441811.
I hope you find what you're looking for..
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1bc47856517a72df0567b2f6fed827c737421c4ac14bed0d56317ab2ecce57. 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/QZRP42444292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9cb8d8c276ae4be747a00d99b9042fdc4be23d91538a2a4312d1a4a8532d80. 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/QZTB42493768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55745dff77ed4ec4ff89bc58f9fd944133723bbe851cdbef076e88216532a0f. 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/QZWFL2422601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8dbdedd967720b1fc0a02dac01d0135edef7ed14610968f29673521db6e282. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ7K2470189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fbf226edaf05c9408f3650e420d84f5294fa87722eaff4b693554fadb57280. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:40Z), 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/QZNWX2596006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf17728068665a8e142f523ed9f689a1ca3d6511802f8f299931ac2dfd656012. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:05:10Z), 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/QZPLR2597806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db1d92945e131fc0d5203b3c32ebd3b40c45f7c4c89bca882a9b2b26ae8a636. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFJ2593836.