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 0xa6fc6074abd70d2689dc26057fe5a7ee315dad356f675cc86f10161fd7431a8b. 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/123a7369-0644-4fe2-befd-a3276fbe10e2.json and https://artists.proofprofile.net/proofs/artist/123a7369-0644-4fe2-befd-a3276fbe10e2.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 0x571e2915b47a84f825b5e2a628b80125d0ccab432ffc2f7c4f6ee254ea51567b. 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/GBSMU2169862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaad4c8676445b575c74889c649d8efbf86f45df7a7e33051c98d016558112bf. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USQY51578424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d106905797bcd1c9fbe834e5c38691d3592406f814ac1b3895c1a8c57fb9daa. 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/USQY51578427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb345f7f82dbd3dfecc4fbd70780e5cd143192a6dcf0a874a6463f39af247e63. 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/USQY51578425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3278b922ad2052034577d89c162e3321308aac096e9760d032fe9f5f61d05b0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USQY51606355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57bed869284673f78c6d6c504adf07bbc2424e872deee3e6e62a3b6a3ee6553. 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/TCADI1779805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed4200bfbe967f7ec1babd9476502c43d5ee9385eced74e1c2ac3f0bd76855f. 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/TCADI1779806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c04adf3cc81704e9a304295a9a18fda275921ea1b25099a62982bbad71d026a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCADI1779808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975fe78e91b023f7e16186feb98b5f600b3db59d4b4864d1041c900df96b179c. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/TCADI1779815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496a2ff8d344bc3587d99045ff38d470de5a9ae7bfbe20341cbb24bcdaec105a. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZ8GX1700314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8605be0f88a02fcb48f60eeed2d27b57907220b5eb4105f2aa33cbdc8331a9e9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZ8GX1700342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0784ea263521d26954fe5918d53d6012960bb0d511fd9f2c6818990202aaccd. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAEC1961251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041ee56f53e3744fdb542da58e9b0835ec50949286089f7e721e7306e4afd0c8. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAEH1900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05f80cee388e8c40633e0634637af09d0cb5c2e72ef88f4d33e1ac98f12f685. 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/TCAEH1900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37534808c62154a3383c72ffec63dbd3ce3e637cdccb49220028ea89b48afc26. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/CAN112100412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08308f3d939c6a4f7c2d44a0caf8a45e20eb7fb05680eb25001da6c0948d93eb. 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/USA2P2135535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e77e545862d7f6100e1d4e0dc72065820f8d56d531997ae4861e373ac1bb5f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CAN112100873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc001a810170956fdaa8e854c9df885800177f2f620ceda8cfd4343cbe8269479. 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/CAN112200307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5e068fee2c6e672dbede05c489640415d1b86bde0cee3a19156ddbff97075. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CAN112301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd13b465f468f20ba976e34d15857da908c379b9b675e83f8ec9c6bb3db60c3. 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/CAN112301254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b5e068fee2c6e672dbede05c489640415d1b86bde0cee3a19156ddbff97075. 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/CAN112301252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b39fd08216bbd8c234ba0c216e98e32f2efeb632e166ea7f1e29d0b94bb0aac. 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/CAN112301246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99aa393377b69b24597d3433442d8d96007f22cbe3f6e6cc8b370f9858aca0e. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/CAN112301247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc970ade66c85ec00f97dd7a8fdec80a881c648f53b4c9c2fb3e230548c769d79. 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/CAN112301251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a02fa59485255b03660a2c45139ab6f814f2359ffccc93180a93c7f21ecc0c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/CAN112301253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd13b465f468f20ba976e34d15857da908c379b9b675e83f8ec9c6bb3db60c3. 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/CAN112301254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15df106899f7c3fb989a54338d25092ff194a98c8b5ea7884453226a2377b614. 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/QZ5FN2133507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf93ac94910e9e954a7ebd317d8f0eeebf38944de5f40943bbacedc4932772a. 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/USA2P2219821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4580401d108dc5a964885150e82addff26c4ef71e052a8a267b4f7c3cc20a7d0. 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/USAT21904261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2239ec33a04df4e4a89a190746d7a5074d280136d75f086d688d95ff64a948. 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/USLZJ1835931.