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 0x9621d4183316cb6824d3990a205460393f2d396229c6d93ada7c54413186e580. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4aee349-66c4-4a56-b669-529bbb04a9e7.json and https://artists.proofprofile.net/proofs/artist/b4aee349-66c4-4a56-b669-529bbb04a9e7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dark Warlord of the Blood Moon Compilation
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 0x384e27b6b7d941d61045111bcd77c4edd031c974c19b0ff2c90a81fef13c0f0e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGJ2358977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c28d713fa2c41e5b758deca5e079a81cb2cd93f564283948aca0163ae177450. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USCGJ2358978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcad8cde251b7ce9efc3a8c7827b36b345884a0e7afb50aead0e13213c272f8a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCGJ2358979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae6162f15627b84539c1785fd998134b7f3db16bb46882ddfa8595fc4b221c7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USCGJ2358980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2adb55666983e963cb5c3146ddcf67762a31ed5d04aef180d947f9078233a03. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USCGJ2358981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04da82ccca448eb0880f6e0a4f007d29591fc90fd8b046a1590640fd24a9e513. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USCGJ2358975.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f464553f089d026f7269b37df91ae75c22526e12a15b84afcb7e5d2dd7895b9. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USCGJ2358976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97330f0bb2c35894dac683a3963a8f3e3242cc60280ec7f0fed41eaa8af0b21b. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USCGJ2358982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6d8d91b38c7f14023d739a110552d6791c4e5b0527420670249eea4ee677ca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM22437027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeb7775c6f6c11f9f59040a3743ec55692e37970a0d8e524f1a3503dafd3a27. 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/USHM22437028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cb596197f4815aa2d366327cee1a57e730a16d6a7691413134d2c430e736ca. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM22437029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cd302119b5f292a4b5a626cadb0fa5729298c8246c3a75b5b30e2d3ba9f023. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM22437030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a1736905458e8333a2e182d3d088866837fc0e21105d1cc565c9ebc4e47811. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/USHM22437031.
Crying out to God / For Your Crimson Blood...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a071d81022008e72ccdbdaf9c43cc1f5b1fb7b6af4f72452e30983aa5f87eb0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USX9P2327358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9ddd7a736dafcadcc01ac24aff3fb930d2ca8bd3c8c3314c7d6cc50ac3b75a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM82391475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0752a9387ec7b81059b2dfa9d331755102b0f97789425b5abd044b110e4418a2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM82391476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8d5b3f588fe1a34347c95848ef5f60786098f67339d57e9485acbeb5b85217. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USCGJ2359007.