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 0x79164c37d8afad3b81fc2248f9a1e479789049ac3ecd73cbd74978a4cb8b2150. 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/028c88ed-1f90-4f7f-a515-2b7fc41764d0.json and https://artists.proofprofile.net/proofs/artist/028c88ed-1f90-4f7f-a515-2b7fc41764d0.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 0x4e985549e1373a25dbf3eef6d835bf831da5359390b81e27c47ca9563be06f44. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEC250463660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a237dde420ce0c9566ea808c634b46ddf4a06efb772e0aaa2636f4112e2cf2. 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/USHM90838968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b56d2d5ab8d62cfdac2b95476b932cbcd8d301cb2c64e87c835e50564093873. 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/USCGH1346827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080169572e45979d914801cbdf16a3f74cb5cb6688784bc4fb6d14f66f7b5bcc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH1346836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd665c169f32b41f516f1fa04d5339d5466dc5eda11605d015cc248766a088be0. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USCGH1346828.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecfb16d820f6bbf8efc055cd1c30e54953795775e084721dcdead5c327e492a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGH1346829.
Sometimes I Can't Believe I'm Here With You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d7232d58170dcd04c1739b75c2a18fcf8e70fe4282ebd069a660322f49c62c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USCGH1346832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc647e58a3b82872ed4b22e9bc7cb6b43d2c872473be6c4fcd14ce15909f4e8c4. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/USCGH1346837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740378c51a67928babcd28ab94589677711cb86dc70ae7e9f5c56498b440931c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USCGH1346838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e77ab8e8e634e7ae5cbb48d1d583a648727b3e4b2736405c77b6752449e1daa. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DEL211602483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8824cf53cc700c3facdcf22e1b96ac35bc8ab884d243e4e37edee0f3202f4a85. 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/DEL212412334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855a173d2eda5eb84786b12e9b15fbc200d5c0be70e443a5c4b8e97e1b59f271. 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/DEL212412336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786596ccc79fe5c95732ec7f8f8c583ac838bcd279078a92345842c057cabdbd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEC252411204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3fadb45a6bafbf85eb52deb484e71bc22390cf6a39ea730124b98b1178dad6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEC252411102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd27e1214e9b4ddc9085caf8367542716e81359c7c969ce723333f2322893861. 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/DEC252411109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae32eb1d7a1193d373e5fd6858b0515532976d1bbf37323acebf2f51e33186c. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:48Z), 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/DEC252411110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3fadb45a6bafbf85eb52deb484e71bc22390cf6a39ea730124b98b1178dad6. 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/DEC252411102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786596ccc79fe5c95732ec7f8f8c583ac838bcd279078a92345842c057cabdbd. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEC252411204.