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 0xe1d43861c8f97d005f11ade29d4547ef58a74b4f9dc0f45712c71417c1936b27. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14a9b035-d4ec-4ada-a204-74beed2f14be.json and https://artists.proofprofile.net/proofs/artist/14a9b035-d4ec-4ada-a204-74beed2f14be.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 0xd47dcb5ae266d456bc026f2854bb7a39ecb901fb8e49e25df1c392a28b06733e. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GX89G2245121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe03b5fab1776cd023b8c6f4106cf0f1a76bb8d8001047e30b361aab9f45facc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX89G2245128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd8dfa9def82f94f82856c55a5ef9f82de810bc27214005e14e448eef82896b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GX89G2245130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a854bf9a739f6a4dae1cf105989ac2dbc3f1891247130a62b92f5273c78eb14. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GX89G2245137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1719f19a9f3c8fe2058a374fd546bd91214c3d688eaf18d691f3bb3721e56b68. 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/GX89G2252886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11255d34b62ab2141a7059ba852b68d6602a6b5c097b5cf9951927c48ef218f0. 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/GX89G2251774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68da62487a9ac906fe8a48486aaa9da18630668834e8204512455b0f98af7926. 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/GX89G2251815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1e9f539bfd7aff8a413f2ed259452b78d4b1abc77e73cc06ce6037886d2c1a. 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/GX89G2251834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9473b05ec4efc264f2f210e11da54a4015ec8f3c46d25ac975deecc63a5bf5. 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/GX89G2251684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8cdc6e34f4976f4bfcde43ed9db0ea81f15afd2ef2dff0311b54aa9f86e8bd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:24Z), 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/SE6XY2370679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3ad94c78951a68b6810942675ca8da559e93c8629f2bb228adaae795b44d71. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE6A92368911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8948aede5046eb44a19d4d1227823a58080415ff5c5be8c3b472a954a3be6081. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/SE6SA2433960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f4fcc79392c1052091600215bdef385f2a582f5a75bc85b0642dd531afaf25. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE5BU2585483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf813ad5d68ba67909de4c6fa92f17677523e68e8fa69d338e4ca595807206b98. 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/SE6XW2570566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2142d783c33c75695a58f7c5e8759d1dd0220b190ccb3e65d1a014f0a9988877. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/SE6I32528687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a90034985cb1407bcbac633bf89815044e01515ead2942b303b1db7df977d8. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/SE6I32528688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a717e66c24e76408e27ff230eb2fa11683e0965626a89f2e2bec899a04a5dcf. 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/SE6I32528689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba237b84bb75ed4cfd2d2a6a3bad8e5bb288948e4926c8eceb6919cc2135d12. 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/SE6I32528690.