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 0x2f7fb30fd29a519606deea33651d1689a2b64ad0521beba01a5a2d628e7bcdb5. 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/953478e0-344b-46a2-ba5f-74ade0b028b9.json and https://artists.proofprofile.net/proofs/artist/953478e0-344b-46a2-ba5f-74ade0b028b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Neil Diamond & Barbra Streisand for Dancing
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 0x62881ef6595669b35b2b47d86e5282164a858ae954c1bb76cc0ab6e421e19737. 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/DEGA69803012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274b972018b6976d88cc609b49b38c3057db617a407f2eadcf09ee1fb4bcb35b. 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/DEGA69911001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1becf6142aa698922b4ff7d48d0eac2ad63b4e241ceb5afe4fd5ac8ce59c55df. 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/DEGA60009015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733f781592d0251b5f008a7d12b2a6ce89a1959e3786b11ff0f2c44bf35bbc2a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:29Z), 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/DEGA60103008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c26454585da597cf4313e32c2e189edfbb182814b3a1c6b278ffb6637df1d8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEGA60203009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd938ed81664b10faa106ef52944f81681792bd056493c017340b7d1be2011f52. 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/DEGA60208003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa928255c5538a81559ba347d595ac655e6515bd67101628705fe4b342f35b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:52:27Z), 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/DEGA60208004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eae973f438673c178f6f71ffb8831effa32a2d2e3b415f3cfb7f17a949374f. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:20:18Z), 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/DEGA60208006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba222b8f5a16f9e4d1e49abbcd75c54759dca6d7e11f0953c3ee31d2a3fb20ed. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEGA60309001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ff03fa75a0fcfd791b99cd9ff938fc401d7fc6146324f9f7fba49a0b8da7c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEGA60503007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8d625d7b9a6411d9adc53164f97076c244219bc7c1c6148fe170c6e3279cbc. 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/DEGA60503008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bfb7315b22854037301ad617b306e9472b287b416417d36b0c3e60854e88b33. 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/DEGA60503010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bed3d892efafadf7be34c223c484e1be3cadc8ec6fcd72a1131e52e7c36315. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEGA60503011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84824d6f2938cef0b4286fda561a0270191eaa0272638d50820ba68911d83b23. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEGA61503008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc397defc5c2797f4076c4a1ffad8e81aaa9e6e8753cf0504ca24ea4b76fd210f. 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/DEGA61503009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2daab67f75030fec9b68031914ee699e5c5bf4c4dd81b432bf60339354d109c4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEGA61503010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37ff20c23a7f44e64c8f31eefe7dbd2eb41d958b1957b564c4b1f5b5e47f204. 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/DEGA61503013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261401cd75139d5c8dd1670921e270dcce2b85eb5d6062d073cd83042a25caf8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEGA61603008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886acac2096b1cd3e383fc99d72d408d91def45746a70e6accae8c893a56ee67. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEGA61603011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2dd872a0044af7bde17b17e011cba7a2caa925b5749b145a08b8aa3c600433. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEGA61703002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe7433235f1669371408657e7bae3dabd9f552db460067028d48dabb7469502. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/DEGA61803001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeefeab1dd85bf381499289ca3324f19c723981d4ba466df7847acc185bbb651b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEGA61803002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8add13e21c883d6f3052a8d76af83d9553a96e015651937f9c2115910552fc8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:59Z), 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/DEGA61903001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a5bb4e60b93c9e15d3becd8dfe8a966bdd311563c99481a05445ee69c0737d. 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/DEGA61903005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4215671312564e0c2e837dc4e829691cf6c3af63818d8ccdcf2abb4516502c2f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/DEGA61903006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bf9bf86710f0b9139f931ba490fde3ddcf0e68561120776c7f25ad8cc542d2. 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/DEGA61903007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb71cd31e0a7cc28763a1cd85df0b73499e89ddf27f660ccf4a900fb1576c81fe. 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/DEGA61903008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc074a8da0ccdc829316c877b561d41662a6dd3a307b106c8e5aded4c53f54336. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:44Z), 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/DEGA61903013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a2a9b4cf51c79851df6e943ba35ac3c5b5912735d1b84b134e2b31cdcd2b45e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/DEGA62003001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d234a4c0e8d0fb0bd34fbafb3dbb3cb5f900d2ca3d158a712476171006a365c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEGA62003003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9cde5ead36490f41282be48075994e6a63529c442d6ee8fa64cd130316dddc. 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/DEGA62003006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35114c6bea9db4b03444861ddba6d8857176a038549835b794846d25a519cf77. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEGA62003012.