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 0x45009ee11fb9ddbd669e70cb3b4a018bc39f1999976922db22d371e94d7a690d. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bdb5449-aff8-4d59-990e-3d1a206076d5.json and https://artists.proofprofile.net/proofs/artist/9bdb5449-aff8-4d59-990e-3d1a206076d5.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 0x53311d91e38383a3eaa2fbdc77fa1f32733c0d02cc6edf54c94bac001b84808a. 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/TCADJ1755594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffbff627cdba8dfbd23e6d00d613a08e0442d9e78306b6145c80fa0426ce511. 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/DEZC62357392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de7c081e55afcf9b58bebe33945a1796052aa66652cfe3873f65a57cd60f0f7. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEZC62275599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3c94aa6efa0ef9b68a8e917ea9c945c666ff08334c37162a3bbfac7e6a95db. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:01Z), 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/DEZC62261220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3aef0fc736df18add220f4c58ced9476ae009e3f3efb50cf08aa6ec6819d03d. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEZC62357393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c89ad06d8a83793986e6ae8800af149de89c61dfc63fe2e96d7b4e378c589d7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/DEZC62275801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f0d6f44a8258fdef19c82cbfdb1e8b03f39af29f49482857e9cb2b87d74f06. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/DEZC62357394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c948ccdf4e56e083cfc8700d004b355aa06fd4701a77071e74b7fd63db07a8. 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/DEZC62357395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05232eafe693586ea27bee34d67534a7d17df76322aa5a82eebcd609010b6c8e. 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/DEZC62357396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f657a1f7cfb8134725fcd1d5e16436f449a55e3bdeb430bcd2cc38d14effa7b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEZC62357397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe551420d9f3225ec00adf58b107af6109464fbce6a43e8ec66f6db4d198c0058. 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/DEZC62357398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb28fdf3e202e9eb2d9ae8cbdec7a159f9835728d31ae7f747aed833ce562e. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/DEZC62357399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888be5e82dc4a42b31637d7dda94a7ebc4bc3ced6acc2129a3ad6c30b61106f3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEZC62357400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956342f91112fc5aba972c31be230c5c1d2648e4de92c24c903b272106ff972f. 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/DEZC62357401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970dd3c366adf47f9842606dd86bb3a1cd590998f86ee2cbd32c7494fe545c6e. 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/DEZC62357402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcff90a49d5a81fa44c24c04a8609bc2f395aae0f9f444d4c4fe5dbc8083e95. 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/DEZC62357403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb178700fa23d1db4490346aea2bcc4bdd5199cb9997a5eaeaea1348cdfded6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEZC62298065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb77a24a303b14624dd14c8b98ac583fff5303e09616ba635673813bd3bd98c4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEZC62296739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bc01e4e2ec555ca03bebdcf6848dc63d4fab2275cfeb8ed302a1a1efb8ea0a. 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/DEZC62357404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2782907987d67c996f735e11cf4787d5dfc918769f1485ac5faff0536b1eab. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/DEZC62592116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbcc0b2c0acb0eca8636a9f3e5ce3e7dbf15fe861aff9cacbe50e85fe6301ff. 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/DEZC62512675.