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 0xf51333c015cc57ac1d9458141443625799f28254f989c6f91a120833979c2f74. 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/5d1bb701-7600-4e7f-9b8d-42304d766a73.json and https://artists.proofprofile.net/proofs/artist/5d1bb701-7600-4e7f-9b8d-42304d766a73.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 0xe0b455cc75e2426c1af0651731e9c333356b0d75ab101a62687915c0ba6cc75b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SEYOK2127416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a09268c53a5092c0b01d0e2792d7b87038a55d429c58bc5578b36a9776adff1. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/SEYOK2127417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba51df3fce7b40c7c88423bed9264ed49c74f7e60686e537b7ace0aba542bc7c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:05:33Z), 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/SEYOK2127418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a19951b3a62c8d9296cd24bb38023a113c31b6e3292d9963f2ba942bbc8106. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SEYOK2127420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab553c750a4bb4e4f1636fcb912189a025312c98020cbecc826e18fc3c4f13e. Chain 2 (Bitcoin): anchored in block 957624 (2026-07-11T23:13:54Z), 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/SEYOK2156205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970090f8b428850467b19e6420b1217e33a7ad06bce6af83db49dfec7ef55ab5. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:03Z), 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/SEYOK2156207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f4e1e1a6c83ef71bc9a13edf5cc9d89a8a432931891dc64264de2018e93774. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/SEYOK2156208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcc71a070ed16eab9c2c8ef7a3f1f705b2ce4c4eb3f8e6ab4306cd4b607908d. 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/SEYOK2308786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2269a36c37329606a74475c04f3b39ffa6933197a3b4a1f780f4fc1fd64b4b7d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:23:02Z), 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/SEYOK2308789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96b21d0cfaacd06705f1ce293eecdaacc920cfb01dd31867456ec0f2f49939b. 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/SEYOK2406457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae79fc3723dca8a07b8f703b465d700c8977f05c2ba588c344a71488d16b7078. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SEYOK2406458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6908195ba9ceb4ad179827961d78ad46d9aca5bb3661806db83925ac888ccb6d. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SEYOK2406460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf461b12731572fd5f31e2130437568b4f0d90cb33528ab34daf353d0770fb81c. 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/SEYOK2408879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdc740759332aa3d35f0cb1d20f01fa02a5031cd481082dbaf42926184c440b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/SEYOK2430024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fb9df93c733ba524d783f08383f368909f9abd977c5a803042675608e67a6b. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/SEYOK2431832.