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 0x8558ad4c1edb4f9a3e962bedd66324930886ff356c65a5a9db87cf31f5a3ddde. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e4afb8d-ef1d-47f3-95c4-3091af8387af.json and https://artists.proofprofile.net/proofs/artist/1e4afb8d-ef1d-47f3-95c4-3091af8387af.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 0x6e13fec6999025b299ceda1578bb593df4373d7c598b80ee3528a980c5cfc006. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:40:53Z), 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/USHM92111404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ded1d8f9a4f2acbbcf8bd82800159156827d658f89fbab77b07794a89378b81. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USHM92111405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c1c957de4d0203a5a2ae983fcd0fb605c00865d3e5e660d7c810c01d17ec25. 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/USHM92111406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963679d281f6616b00432b4aaa06b22ac51aba088fd6acd76c5c78f6317c812d. 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/USHM92111407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfdea4b997096c31c043ab080d505aa1332ee185337a214eafd17eefa180d7f. 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/USHM92111409.
Sheltering from the Rains in Nimueh's Domain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe2d901b3eef98137f8bfe1772f24b7ae5bac59715affe52a2ee46ec1fcc5d8. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/USHM92111411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11022d1514b4a24931c34b3e320a5ee6677a45c7bf128089b1f0ec6715847e7. 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/USHM92111413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99612003848907231ee006a37e0d9cb21e05e024d702a667b609009ad676e55c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM92111414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b8f3da11cc1cf6618b8ce8b574c73fe9cd15be64042e7aaa4e87229243f887. 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/USHM92111416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23c331895f5b2120bc5ac687348f1f884a6e369fbb285a29552235a3fcc2530. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN62244375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94ada26a83ebb77351735899986a1a3665da85d582ebc6cf95dbcc4b8ad514f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN62244377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d743acd2860bd279df4165732937ecdb17ff0ac7a8f95e0f03a32dc83b4222. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZHN62244351.