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 0x58c802061b06e323e722ff301f50bc253c2dafda85f5c44cc5c9f477030b42f1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ac4690d-692d-474f-99fc-de41e62c1cb9.json and https://artists.proofprofile.net/proofs/artist/1ac4690d-692d-474f-99fc-de41e62c1cb9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kitsuné: This Momentary (Bonus Track Version)
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 0xd82deca7c794a794269bf0bf4388ed64d03bda1ba5b4091514619c31c340cd6c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM70906334.
Kitsuné: This Momentary (Bonus Track Version) - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115b52ddfb1289a8c5106d47fd44468a099c113ea28d06363b4976a6a2c1db15. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:22Z), 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/GBUM70903534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd39273599487e99667c9b87bd059226cd466aa40cac2e28bc9c9de277d56ea. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:04Z), 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/GBUM70912970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857e0e95da887a2f49eb8448777a7aa2a424f2b626c80a5accf8e1a73c672b01. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBUM70912917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa980ca59910562d339f749090e70eb4d2afba62f2cfc67ddaf5d97e8cd736965. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/GBUM70912918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3260217b73f3c9bd0563aabbd8913dac2822ce79ea2d4bb39f8c86a16b168abd. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GBUM70912919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279753c4f2589219fae06bea747c502c723b08da32db7bdcae0144a925214883. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:54:26Z), 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/GBUM70912920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f825d4b39c6f2d27dbd026a81d51024146d0f897ae5224978ffc4685120c7b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBUM71207617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fc96305f3ce42e8433aff8964fed54fbecb094731ff76be0aa09a0fa229785. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBUM71208151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3e2110a8007dfe30dfe4aba2e4de1a6e75e8ba8f325187e99b4e1dcdaf8f70. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCABX1481580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0f1848d3c7233e1426a1e57241823eb16a4a450b3ae8bc1aef00e65d4c489e. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/TCABX1481581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085121a39479a3a9fb74c66b32142ab855b9666a8ab7a7948bea02d20c7eee05. 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/TCABX1481582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512542abcffc4f220188f1b83dbffc299f9790810a72f2576f0b95bd34f95ae2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:45:09Z), 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/TCABX1481583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82deca7c794a794269bf0bf4388ed64d03bda1ba5b4091514619c31c340cd6c. 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/GBUM70906334.