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 0xed99a64339c9448f5997c59111b9fdb2040db044c6264190971fef60f732ff3b. 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/63543791-7d9b-4a37-af6b-4d37390f63f9.json and https://artists.proofprofile.net/proofs/artist/63543791-7d9b-4a37-af6b-4d37390f63f9.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 0x0bddbaa2e8048ca961f50d38b7a99c8b905ab2262c245aebf0501f9e3ce46e6e. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:36Z), 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/QZDA51866611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c564b76f242adb4c5458c37f4e57cf43ff12862fef6979017be25d55f409ca8. 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/QZDA51866607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1b1ff04ef2d21eccca16c19628c79c5acdf0b14f4a5309e7dd6f85def428ad. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZDA62288295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05f44c0a7e2acf26664d4558286188a3bd930cc51ee93b03b112b72b60daf53. 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/QZNWR2096104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041202aea3189cacf4816270769c11a348ea36c857f8e545f2c502df746a1366. 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/QZHN72271096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd95764f4777983d59d7daee790a52ac361ec84f0be1e3ebb264d402ac35a27. 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/QZDA51866610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51e8cbf8480729b04645ff0561d648c5a182b78594c5feb22da76a9d98d7e01. 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/QZK6J2316909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb942ffb749b36e3222750f8f8610192cf3279f695991529d430fe48f90d585a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZHN82300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b7af94382b093977e095874feb73db62b703b2b48a99026b799179b150de6d. 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/QZFZ42344754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad5aba4bf34d3df65c93fdfd5c4af8dfe3afe9156837dc10fdda46c99aa0dd6. 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/QZDA52134669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ed071b5d71f3a3e1186e515deb5f57c25ae15dd6c5c211ac10cd5c1869847a. 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/QZES82241355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3754fd11800cb890c2bd308a72f8f33f340c87c68e96bb76ae1a4e686987106a. 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/QZES91863546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c2785154e64c1acad75c71d805add5959c89e0d75372129374809606c234ac. 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/QZHNB2270924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b5ca02add63583856d01248b8eb1516cdf2c47639a55239bb1c0a646f435e5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES91863561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf89391fef28c8589a87ac9f8dbafe77fc937cc7dfa2ceed7047edd702f27ba5. 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/TCAHT2486388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2ff999bf8f7d55d31a01ed9a5415d4d4dcf1f4b208dae5301cdf6282a2fac. 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/QZK6G2346495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9def33d7ed250c9a5801dc36cfb4a1f9cc242ba37df5fc3d08ea598b7682c8. 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/TCAHX2405353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b24439ccba4acdd4c57994e77bda8afb76e5bedb03ef3238e0985e11257f99. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZTAX2343962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561ce380144a8f45c9d3b1170f5db8d4cb9f43a59bdbc53fc2d7156b1dd3cfb3. 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/QZES62223484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275904f59d51506dbbf3c2a41d7f4ee6133a41dc210b0e1698301846522c8627. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:36Z), 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/QZHN62179809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a00b882655c1c4815d6857560143c33322e9384f83e2af457095b646f8ea47. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAID2408220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9072fefbcd6b1d044c486f0b0e7cbc0fc97e5258e8214141c70c28e2b40af35c. 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/TCAIG2418585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaef20489422022c6545d5a26ce8be1ba012b862319f32de9659412edf7b6a5. 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/QZES52056656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd172e75ac5f378162d0676f1ae7c52aefc3c0b341138ec50b4cf159b25694a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:57:26Z), 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/TCAIT2405627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b7a604b48787f9802f0cdaf9d7d050d904fe791ac1f03542c9feaa24ea9b71. 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/TCAIU2466898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6428935edd1106b1f01a85f79e9e1f95c9116c92b4abef53719f0c01adf7e4. 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/TCAJA2465331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c10211c117df2f58990ed8962ab2947c8b7409b4d10add065bfd64c520f759. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/TCAJA2492369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f9932875e1334bbae927573207daa9094352f10aec0afc12fbc1bb5153d91. 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/TCAJH2527498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41b4c0711ca666aa20d7dc33fd52d67760cc418999e4689c92a92a9467daf15. 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/TCAJJ2507228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb47c98798e6a451c9afcc7bb781bbf32118d32d732c11bcc5bf6b27e028624. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T15:01:35Z), 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/TCAJU2528113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22806b39c691be9f7755c7e27cc6455393d9d5a1f0b7815a73d29003ef22e54. 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/TCAJY2559296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d7202e1a40ee89ebe67386b7a785a30fabfab58e40bdec9af1561109f2398f. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAJY2538744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a67d4c68d68b3db84d4e0043cceec7fa572473c0df0c25e099e1d8dc88153e8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/TCAJZ2501645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959eee541c4285014a0084f2a05e6cb81294b3080d503a9b52ac70a3cfdf67a3. 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/TCAJZ2501666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9631664a116d6f67abdf953c6d004712100f185fa623ed0d94c66738489578d. 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/TCAJZ2570589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd355516393a84d1b654fbe7160b0eb0a3574236652ba130e4fc6f574b83b12. 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/QT65W2556967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12b69b6dc817aab730d493bdc9b140ed8229165d80290c7ccd33864c569ebbc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QT65W2557001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc35e6680c5af889e645dfa7614d4212b10acea48e6225813fc9eea5a174245. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QT65Y2569930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9788a6f31c7f2253072df98b18156cf0afd0bac18d7e03abc06a3da3ec8c6c. 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/QT65Z2566487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9032990f9a8e05d9b82f328f77742e2259f8b5898e4fd616c7fce81ef6e2ebff. 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/QT6622582633.