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 0xbccd5dbffcb90f44e94947b10b7aeba93f27d924bab4cf143e486e6b5d29b19b. 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/fff28dac-07fa-42b4-bb63-de5397e40c8a.json and https://artists.proofprofile.net/proofs/artist/fff28dac-07fa-42b4-bb63-de5397e40c8a.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 0x7b06d8749f573d3ee4e411c824f689222ffff27004bb0a916b13f34596baf801. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:47:37Z), 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/USHM81323742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef49ff9a033935048eadf324fb3c609f42dfa44a1d7932e0d31a08bd1a5ef1d8. 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/USHM81323743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e5cd7c18226d14bcda2fe7ffb4330b43e052b1c58ac669204da65c33c0747. 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/USHM81323745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fae1def828f2992cd2bfa3f4c3123b449474dad7c9fa377ed1f90ff8102227. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/USHM81323747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b36a1baa1fe670ed0031263c6e355ba186ae8cbcc224243af17fe0a0fc2d995. 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/USHM81323748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad87c880e34aeb6b77309fef6a1db2af57612a2818167e24f772701de2a4352. 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/USHM81323762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ef82df1ab04716807b1fd1139c6d4be49dba9c5472e22c9725791fa624daa. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM81323764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca9550e44bd169650aade44e40c1e7b1168fb2b91dfd403f1fe55f02d13ec6b. 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/USHM81323765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444d0e09ccc0d82530a2c6c7cc26d52d62648828059cda139e723f454e01ae07. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM81323768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d38055e15c7a7374e2f510c3d14e30c9873426a6a4891c1ac8c24574a496bc. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:06:08Z), 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/USHM81323769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e8091b6b5313ff179643482e2d1ed3de86660b874452d7d084eb049fd3b3a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:14Z), 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/USHM81323776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafb07c79c6e5ad1ff1b356ef1d97654c14a545c8427f5f05563bcba98e3d213. 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/USHM81323777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67239c46570df2554badb1f96d7c2df46bdd77326c85fe82439995cddb14946. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM81323778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dcc37fb4f1b1aa4135c28a9d9e8365458d125363f3f2fc4b27bde6fdb665fe. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USHM81328390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68163ead154593eda8ef2711230758ba447acdc1d1e26de0a8e2bf2714d5d53. 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/USHM81328394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5404e29d609ef01f5455d1cda31edac90b9843f7cdd5ed3c52b1477ff8e732f2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM81328395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b672c2775220efacbcfa2655ed4d2a4d3ba24362eec057cdf2072efc1915c6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:45:07Z), 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/USHM81328398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffa272267583327494e844d8d66a1ecd57d30230b05e8a1224ce807b42e3929. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:05:04Z), 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/USHM81323755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371dfd620ceecdce46365c4d5080b214193b8f82c052d4107eabafdfeb48268b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USHM81323756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad17330b78758b6d4a8e6db26ec717a901a96dacfee146423d54af6a97019f7. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:11:27Z), 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/USHM81323757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a971720f3f8d33f5c4d94e27479697a8c0a75cb0b1fcef7ed53afd9047987a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM81323758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdad724e9b523cfbb15440cbe96290eee137cb711a1eb12109dc3ab0e02249b5. 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/USHM81323761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc57b0828686138170c2812a23ef628ef81639c2ad64424eb967dcc2f83e14e6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN62081452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744d97210c017d5c074cc280cf7aeceda6d12cbf14584e031325ec4d63199059. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USY242403746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cb280d95bef055871b565ac01d7242aae7d85005aa22b145d4079f01744f1b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USY242403715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285a4295ab80476e28747d32c74eb484f3b5e85e98884b0bb383d3202c1bb1a2. 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/USY242403716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4be1fe4bc300c3b5da72ca3f2903d8bb105bd49cc3125db08281db8e96d0b9. 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/USY242403718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c9aaeb76e415ef617eb9c41839573b02a6532ba6ac3e97aae61f0bc41e6e7b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USY242403719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e063ee8b3800de62cd84605e35b2331c41015944c6e023ec57b057dc6c073b. 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/USY242403720.