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 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 0xb5dc1908d0373509c48e4f5ec7e8481e0cbdd01a54c0a3ee917a7dda0c3a4454. 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/c063bbcc-4fa7-46df-bbfa-2c5459d23cda.json and https://artists.proofprofile.net/proofs/artist/c063bbcc-4fa7-46df-bbfa-2c5459d23cda.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 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 0x0a191ef393f80e260d999a6ce030374612ffe72389dfebb941df00222d47b662. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QZBRF1887690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adef03a5c0edf9255445f155af7c2ae8c6563af4fa493144d5fbbfe003f2349. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA81817408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74e1c00ed845652bf897bb4ded6067b088b293e9695ef36f7a76b34040f34e7. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/UST8K1868651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565d9e113d3fb54e68c9a0694f9a4694b9bb541e463b11fdc87c7a0e885a255c. 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/QZES91882833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1285cf4c35d6afba9dabacfd1282d7c7a3bb418e24e5163d97ade319d10f4210. 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/QZ4JJ1931841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c334e3638f3d006b45eb2fbc863a9f9e78791148927d646f474fa3b245167f3. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZHN41981648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aca7251cebdad811347f12eeeffea12ae1bf6683b35461cffe3b4e49a612f28. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZFZ71969165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0747a8944a09d193b31c514c3322c19eec29dcc0e85b08cfc51b505046eb2d4c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZHN61920861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5340a18c714b3e3ea55097fc8446cec4a786351dd0ac7e644d04581687a21bff. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QZHN51990991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1b8041b28c5bbde4e631ecbf42c032e0020c5b730ec9023ded8c5f85fe4c42. 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/QZDA82196926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70107853e19d436be37aeb41efb0ffed56f05104ee8eabc97e0c756a3fd3ba0. 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/QZDA82196927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6ddb27bc20f4ea8529b71698be57585d4aa1c3d606de9d2c2fdd9eafab9a30. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHNB2139388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb796bde54b6c3d9936ffe439b9a946967bfa1a3a3b6afd2da03489e78c6a2187. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZK6N2187499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d4210be7460d54581deee4b6b0dd399ddef0b15f64a53f53798ded7f3312db. 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/QZNWT2191910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40b2ad1501b688d2c09e1440a95de2f5e59e48cc439cd8a83fd7cad3611f94c. 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/QZES62260130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3439bc261fc19174a59fd5e3fc47175d5a827387fc2b9e0183376d4fe90896e. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/US3X59406903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab6f2c175797065a79c38880cfec133d4ddb4c543af525948279bc491a78261. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/US3X59406904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999cf23a3199b0a9f90a75383787f038489304e0d4264bb8111c0f964cb2c200. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/US3X59406905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813a003f60b0958c68be444de455520c14c7dde9e25cdd51ad997e887bcd8c8f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6L2327463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d37411138eb7a7a7aea27b27cef023434ef3d9e1c78f188a75bd1e8b3e6341f. 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/QZMEP2345007.
Future Tripping (Mulholland Drive Part 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdc1719aa627e1bc5218dd411b0fc4caf7942d906c2ffaf5f98975a65703d48. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFH2398541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e513103c968734dd10d2648c52d46629f7c46b58cdd5121c4bcc6032bee3cdc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTBB2375908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7736d7f4e399d32e0005b00c567af4542defa8669f0d82e12483267586c45d61. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/QZWFG2318104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1f135b71fb17ae65d4ce76940cd943483c7e8fdc8afee58fdcdadad3f75543. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZTBE2381868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f1a55f04b04d4b59394a415f383237ce165d1c21852741f2b989051517fabc. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZTAU2311307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72394fd1c5214e10a2dceda77b4bd56f7e0769e003ccf49884ddec4251179ff1. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZK6J2483279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1d0f426ccb41d02c69964bc448bdb95d32a9c20f4de14d22687ea89e857260. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZK6H2456478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a1cf811e2dbdbd7f3592f23f52a36bf9e0665d746d89541b863f653fe809aa. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZTAS2424498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d659b061b582eb51d021e7d48dc660126523572c7a3f4c7dcc49175cf616b7. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QMBZ92022104.