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 0x0fb1df988656dd88ccb7d69ea3fbd76996e4800a5f9774a5d54c3c17790a1ba6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f40453e7-12ef-47db-bf62-647d09268324.json and https://artists.proofprofile.net/proofs/artist/f40453e7-12ef-47db-bf62-647d09268324.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 0x7a3eae580c08836bcfb6c5e070e537f496c30271515d89ce6ec5d6367424cef9. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/GX89G2374836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c67d0648f2f8ed9ac502b846badfaa89d3b778a25058cb51732cab27bf0fb46. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:20:18Z), 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/QZNJW2351810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f1415e75fa742715c728b8701f3dfbbce41638a2e92d39a33d9c3e0bbba97f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GX89G2331192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e68eb96399024d78285188f9979a49294a8a35653c7e80bd3eda02c758d4f8. 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/GX89G2338664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef15517352f2f95188b0c132b9670bf549dc3545aabf41fb232183fc0bf8120e. 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/GX89G2312542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31da8da571c913f111225dacd55a82add74500584f18a14ba0bf6973c481b39. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:54:56Z), 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/GX89G2338125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84694769261c436b26f26ea62ae5497cb6bf1edcbd80bd655f2ab5a98ef7eb89. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX3HH2307391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414df68fe8a64c7cfae07d52941ad4eb75c9fe74ea2fd9dea640f7da9e7cb30f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJW2351819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16efb666da4102b968e7cc0f15af1a637fe38b2e67dcbb5a728c633973c38674. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GX89G2364351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4446a7fb0a9fe44d0dc73b8e851173854430ea4c37eef9885fa50d3eabfe469f. 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/QZMZ92441030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5ce9e97cce287c91570f21ddedefdfb165d8f1b6aa2300561ed8def890aab3. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/GX89G2374457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a1c6029a56f4809fcb1e3b0cd806cfb934f1ff25cb0c68cf9d482524ebb4c. Chain 2 (Bitcoin): anchored in block 957690 (2026-07-12T10:16:40Z), 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/GX89G2301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7bfcc40b0eeb228dcb0f585cefd0feb139f5d6e20a2f92daebd50141e8f587. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:10Z), 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/QZNJW2351799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed041be1854b87cbdb43aebf7b0433643536514f7fff778ea298236edc988f2c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNJW2351807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd961feb354cea67e4f765a9b565e1e01e311af6743964e3a4514675e59e3d820. 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/QZNJW2351820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262e7da8d6ae9cc924780b0364b757eb80dc33cc0d4db38a277754957a37c1ec. 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/QZNJW2351832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2380304cac77273b015217fdc58f999f2542d5ebec4c235ef6fda1cd1b7d97c0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:08Z), 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/QZNJW2351841.