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 0x4dc68bf0db29bba9328b0190d00f36b77fe52ff94da2c2924f9da144f6aecdd9. 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/3737908f-dc73-49f4-8aef-da039101b5a2.json and https://artists.proofprofile.net/proofs/artist/3737908f-dc73-49f4-8aef-da039101b5a2.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 0x9ff6d53dbbe4d388b83039321f69901c34162fa69e84cca01bca5964845a3f6f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:39:55Z), 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/USCGJ2457664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c84967b338beac09b4ba3e4449951067ecf4ab512194ebdc87542d7c8ef057. 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/USCGJ2457665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321937d5e6df62356bb7ff323722cd7e779d4762bb537727ba4e76e2f443effb. 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/USCGJ2457667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3983f9b65c0c82b0b0125a78aac823f4f740f8dab593e9e3bc23f874dd6179a. 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/USCGJ2457669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef81b626b01f05385d8bbe8e7e4a6c611ad0e0c1457492d70891155f4f1197c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USCGJ2457670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36414246ffe10f9de8e53d3fefcb2836e67f4becc5ec30159bdcd114fb91b056. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USCGJ2457671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f0a67d116671ea87924b85e7b7dd6c8ceaadc8b103666dc8ac514f152675e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:30:14Z), 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/USCGJ2457672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b59be9e068f057ab775739b15ae50a92dbda2032ed99de66b3b6ea35194069. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:07:44Z), 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/USCGJ2457673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c4da758264f5a417ab6121ce8b5105294af5abfbd017da0cfea6d170ceaf4f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:13Z), 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/USCGJ2457674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8351d654dbb0b37e8a24daf934eb757a60f2ecf911a388e01893056db56f60. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGJ2457675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f51dd4119977f374d1ab6fa2c9d4332532710be5abf852083e4a35acb7ad591. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/USCGJ2457676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5af1451f8871645d6622631070d9c33afc8d00598915cefdc3023c220074175. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/USCGJ2457677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81786eef04de2f623e8cc616fb592ada20a59d7c710c0129d837ac934ad80942. 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/USCGJ2457678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58138ced4bfa017d0af56913eba76a184c9ab5e21fa77561d011185a1aa5ffad. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:38:36Z), 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/USCGJ2457681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d0da33fe7d3d15ce9ae2cea00ebce01d9eb486641ef0ca06ca0dc04aa85673. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USCGJ2457684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635f1ccd0bb7a35245bd98bce199776040f6973b316aefb4b5462ba1caac5d46. 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/USCGJ2457685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa003559a25b0f420ddcb43ccc5bab2c885119d0f1b8ac0ec91098b8d7e0c95de. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:55Z), 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/USCGJ2457686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba492c0509ab6728c9c26088b08d2034974f0f4836eceded89b20d33640f1e0. 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/USCGJ2457690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ecea2a4923bea45a3e6a8eaf767cc2c471aff99ec9af39ac84da33a095c46a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGJ2457693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe933140298a54e2f4d18216ea352f79ce5c16285465af833a1cb21e91ed1a947. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:02:52Z), 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/USCGJ2457694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4e50dc15338d2b2c6fdd51fa274dde397961d07a3c5a8ec31bb2f47cf6042f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USCGJ2457695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694b9e01df7057e2ec5c0d93875a69e1bf128205fa4310130d6e331861dbc1d0. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/USCGJ2457699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0378102b4f87fb8dc28d4dec80eb03cf26f4ace27137f9ec29c5fb336e16f9fb. 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/USCGJ2457703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82c726fbf34d65170fc5acf9718c41b39674649c3eab445b5aa5cf9102305fa. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:22:24Z), 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/USCGJ2457707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8374cce61563354000b2a67d1d1567f0f46ec50ef00d47448f59b310e9c67f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:42:22Z), 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/USCGJ2457708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17362f4cb446902e638cfa8511e696027ffc2073777cb8b02ffc8f27ff03923. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USCGJ2457709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2440cbe9368455e6ac75c314161b2a4afeef696b4a013db34711bd66f9ce41b. 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/USCGJ2457710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440165ebef1e0448b41dff4200a6b8dc2c0392e07786fb829cef624c448397fa. 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/USCGJ2471662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8ab6271726d5b20be0ce49680b8064d002618c968f816a15e6a053a50a7076. 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/USCGJ2471665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc00b3f2d88a4151ac49b1b06278e8f611e8547b261148a09747dcae6022d4e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGJ2471666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885479efda9bd0a91064bf8769323ab30582fa4cb66a646ae2e4ac28718bcc6d. 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/USCGJ2471668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb1a143015ce78dd06d913683469d1f00fba168ebd9a13b564a03994ce58585. 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/USCGJ2471669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866641be295c389ff9441eab4ee9af53ba6d8ec2c66ec5ee95bec83cea31909c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USCGJ2471670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb57de99f94e84ed22353f908f750912bd2bba8f154303d2b225900536a16eb. 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/USCGJ2471671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8399885dbed16104cf19709acc29a0ceb6e8f3a8e6ef8bca8e96afd3805539b. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/USCGJ2471673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe857125241abd8cdfc6cd49676f712d89459f69a4a437212575333836dcf90ca. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USCGJ2471674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83693e4eba92da207567f461fb2c73f08623250088902e289b520e812f3f6d37. 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/USCGJ2471675.