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 0xcae636e50d2dcaa0523ffc40e710b779fc371c13b533a39f6f73e5757d7a9be7. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d0377cb-40aa-44df-944e-50126543fc97.json and https://artists.proofprofile.net/proofs/artist/9d0377cb-40aa-44df-944e-50126543fc97.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 0x616f4cc30456d7813873b67b41867c719a9fa78311f06dc4f1943e32cd1e3a4f. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:22:57Z), 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/QZS652459889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60af807b35bd6eeb79d92fa6031f7343d3f538caea1d799c3556f9ddf3bbbaaf. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZMHN2455951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b51b24139792f1031b7090d04c207e958e71f95693cc28559caafb9fb35d16. 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/QZS662439465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd67326cef716db1dcaa84710f52247fd7e5b1f963485cb7f6107d08131c2cc9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZMHP2427529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de3d2cdddd71479802465f50013f904e64ee86825dc4a86455114d712c34d7f. 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/UK6822414649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88bf32c2a927a5a6562f5df8b669288ce8becf12ad5f41e27ab0de048657b99. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UK6822414650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ade8f94104baecd6babb17e90d1785eeb603ec8df2b17720add42aaed3ad1f. 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/CA5KR2485894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a33526bbe0daead9027b8229a3d43becc9c0d3b2b5af07829df429b501f1573. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/CA5KR2485895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282ae5c0522b8c480ebd06a636219c8b86e6334c8d6080386b0627035a6172df. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CAQOI2413300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70ab7e289457490b798322db88d30cd67b6970f7e528b8356b1cf0d95a5d994. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/MXA3V2400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afdf56b962d76e92cd9a6fca47495f019a6bb7fe93f3f9b07faf7f7fad70b7b. 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/MXA3V2400248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d41a7922f041d5942e14c872d7f2bf445b01f06acf20c596bd2c72078b8c93. 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/QZMHM2431797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b29fee31ef42bcf9902666902014565e470d40ecbe45621a7c9a5a9cb7f0ce. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:20Z), 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/QZMHP2421529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3c161c57c9e48d9bc7a1aa5fbb44edd674178698b0afb3e166255e827b9f63. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:49:57Z), 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/CAQOI2413298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdcb8425766de488fb397a987ef151848ee3ccd6d035db849aaf9a80bc8d295. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:34:23Z), 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/MXA3V2409736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58f81ffc2a874a7128c22c7199eea7ed3b0085a048e316f024c22c733f6f26c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:56Z), 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/MXA3V2409737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8471c7c01bba58b75cd3f122b61a14065292653de1c9cb3fcd0694da4e12697c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:56:15Z), 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/MXA3V2409900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826d6c746ee2c71a1cadd46d552e11f4e003942c296e5a3343c46133d05bf05c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/MXA3V2409901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa931945ae1d2d1a7290d1379273ecd1d0021f75b259c27170467c1363636f4af. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZMHM2539259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4863784bd7370e4dbcd212d1c923ac4b68f6c7c5b1858f85a9ec8381be486af. 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/QZMHL2502836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632b35fe17324ab1b8772c7abeb3ae562436c72316cc39215a4c1bac28de0e7b. 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/MXA3V2434893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d4f29d670ece21eb985b86b2ba7afd286153538fdab69d87ecfd1899fc7e6b. 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/MXA3V2435409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f52fc1293e3d42e678363673cf632ab6d59716d230ab21ed151bcea432f2dc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:55:56Z), 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/MXA3V2436519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edaf78a15aef6bd19f9dea278cad304aa3ffb48e0afa85d2eec3eb13b0fedab. 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/BGA472520777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dde97f5c38a8697c0f2bdbd31cd63a70b610a4a41c6f1e4be3809193175bf79. 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/UK6822512332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fcfa2a2df077bb00c51462e1312be6c45707bdfcdc3a7746a5a224c9daaad5. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/UK6822512372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6640c4ad22850c15c4e6421a87d0e4589e5e9d4a2bb0f7b182ee6f4e550a8d52. 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/UK6822512850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1af44a30a3b1795b17179d56c296b190134bdb576d6dfa1450b59e4573c311. 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/UK6822512853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f6c7da20763672b391670cd832107a8eeea57496f7a0a331b95d7ed5d2fa1. 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/UK6822512854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea629fbf2f451f858b0f1f0045cfb1da14af9386a1042b17b9602a8c0efc4a8b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/UK6822513237.