1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1d21f4fa46aa22cad6e154bfad2debfae2c0a0f37521fcd2124521998a30d6b4. 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/d0e31f6d-540b-4fc3-977a-63b9c23149ae.json and https://artists.proofprofile.net/proofs/artist/d0e31f6d-540b-4fc3-977a-63b9c23149ae.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 → block OTSBitcoinBlock must exist at that height 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 0x7eb4deb0e89132d85291b49081fffdf797dff4831dc498ec649a4b7f3cfdbf3d. 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/USX9P2400939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618777125d9a2e908d65010dffe530a366089af2b4461c719b1f701d5b76c24a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USDY41654032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf5ee7c6304b0bc8db0dbe9a3c4c88b96eb27b8d42b51f0b2ed1f08f9ef40a9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDY41654033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3190314a1038c2c32f1040be2b026edb596ba6af1bce8d8daaaa13e738d02860. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USDY41654034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a1211b2ac683e31dcceb168d4b13692e94be3124610b6921799c74a7ca45f9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USDY41654035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9783427737255bd39b36c0d85ff1c559f6ab8b0c5a15c5d97624d5aaa7e626. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDY41654036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710e828af652b90961cba53f158cb9120ec93c4fb83910d3ac68c2dfde22cf34. 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/USDY41654037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b19d0fd8ff4b5a2ee069934f022d3bded3bfc9986ca4cac02b3738588bfddbb. 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/USCGH1556202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a355c1813c6c07b64eb4a321b09d478a48dc6df86378a4af9eb7abaf2ae635. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH1556203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5dd80a93a2453731da612d9f9d9a53d0309c0527da6e7c6ea97f24aa0a456e9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USCGH1556207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf00e2ddb7a01ea38e354436eb5c01557d88c454a94fe3606301ba7c404b341d. 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/USCGH1556209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed089a165af1c1ce7888e8b053fd352381acbaafa43073322695f8b16f5567. 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/USCGH1556211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b78bb0f841bb0602e0e4b19a978f9ed9536c99143d33a7c3c316461da8730de. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH1556216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adc4a453f94e5378014e29e0d40cf1f85a434cf42605d13078fb43b58f57ec6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH1556219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e15b4985028e7738ff262fd0ab37081a4429e8f4ccf3f600731e28b06f7103a. 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/USCGH1556221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1941faf0c0552842f5aca39ac5ea472ffadef73eb83f0a14ce250b243ee4e109. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGH1556226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fdf38f961024a9f4206bf6574f6642ac9234a15f6a4e569255ecb109ed18db. 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/USCGH1556229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e915fe27e61db5b76d59407c54b6570ad79b430545c9b6f5eba571ef8f13b13. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM21319641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531fb5ecd704efac0dfef06ca909c7a776f3e4784438497db0f04891264a6744. 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/USHM21319642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585780a0a62cb4fc4b7eb924ba873651066b7dcb1fd79d3814392402c13b5528. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USHM21319644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75795cfb867a8ef0e7568661e3e46b321fe7d95b4b5cf5b50afbb67a4667136b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USHM21319645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x350edf6111162a9a8eb634cc5c908bb97f635c98f329e1422520a3868c75088b. 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/USHM21319646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5321d93e90ad6d5786c957115a5021dbaf26cfefe84c3fed6f897d1932a1ac. 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/USHM21319648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959c6a99e432c2274d2b6f8f95827d894056952b60ab5a35434a5d9789ee8639. 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/ARA821000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d30ad5fecbe2540a02ecbe474d4488f8a21567427e1ac1d25c5c2b8a46ec9a. 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/ARA821000623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed389c8b156e63cb80a6c8029f425e141e9d961cc4a6bcf0db939f5a2cb14a4a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USL4Q2183080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8988c9949efc999926591929b9c7068a216cdb31448d88ec6677a711b315212. 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/USL4Q2183102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df3a9ddf904d7fd56f2f477e4940aae5ee2a6829b7fc8f2c736e6aacc2082fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82041535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b8e9f1661c84ca13d6317d8a7c7d19012334c1d638da9fffb302b563754bf6. 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/USDY42085513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1483f97869fbd209ca033cdac769328a1b8cc10bb0017e3d06e05ba984de3f8d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USDY41956231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0adc7c81139056de04bc6c786317a76d388cda5aa9dcca4b0d6c553822ec085. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ1952082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d3c59ff677aef0d6dcd80ef2929625659be40dcbb1a80851acaad2ca094e3f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USL4Q1828570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b52143f84fa6bce112d6576ef6ab9411a0f07e18791683a4369651d60dc5ef3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USDY41737855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e209a9e711a5cd4d0c5655a3517dd6e0d28e54ddde73f4773409cf8e5116ea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USDY41737857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f63ae02f6149ee5a3d9157f7dd8b0241c9c1672bd7b93f94eed63e632e8a59. 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/USDY41906071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4797e448db4ce6c322a89ff55e50009df5e5081c6d75875e2b8734548c031071. 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/ARF220601439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x459492f15d0ea6434a51a5902f6bf2863dd7120569a02c16c25fc9146d593367. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ARF220601441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81f356ce8ef7377ddf567d1b927e4b58036315eb2f9638224ebda4fb56ed905. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ARF220601444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3c976a9344c8a5d5836283e4c6daf7818b3ffd5c37b002ff125d7fbf441759. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARF220601445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c95028ceb879a1d88d95317e8116efe72a44d284c77018ea35ff0b9acd3480. 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/ARF220601447.