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 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 0x09ea961df63f887f28c74a22e1d8db131f3ed17a914bcb868295c6cc96c35732. 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/0bc06917-63b7-4de6-8848-67c55e418378.json and https://artists.proofprofile.net/proofs/artist/0bc06917-63b7-4de6-8848-67c55e418378.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 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 0x2be6761e3563a4b2c5b599b9bafe7b6dd2509b8e0cb967118dd1e3b1f5e70f21. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/PHW019900382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa15e6a31570fb24001a59aa578610fe42e8f535497fb297dfe80b1ce349119. 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/PHW019900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215595b6588d948f0150e96c7a940a559d785bf0436551b8af53daeae0e7a9f3. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/PHW019900389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822da8c0b8d5a847277fd98f412d472bdb7435f97e3f4e206917d63dbab7fd0a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/PHW019800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad4be9b25b59106a198b719b9fb8f51970a457465d5bcbc3e0bdac8e6c7c2ea. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/PHW019800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05000d0d412146744b5c747ec1f621f7d51aad455b2763e9c80f9aa540e09a6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PHW019800159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fd87bd1c7c4f5d81d7c769f05b3fb76fbc55f1959058d6bc8b440988129dce. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PHW019800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0c230fc04984b101b226b8f3b1c3a251e5683f765a8a7020aa38626548756d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PHW019800165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1758588ce689050646da6ea8f9111a0a6e99c8506d41849fd458ed80fe75777f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PHW019800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc68e8689065bd59908a1f3df6fa66f0d7ec010fe0bc9bd89e4bc0dfd6f5e14. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/PHW019800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94956e279a12a4a5c75f14165375a0bc45e362832d3c70917b51b93e5cac7f13. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/PHW019800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00fbaf42686a598cec6d765bfb3e0c9b09633e08d7e9968db8c7dd011d35dbb. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/PHW019800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7507af289b2486a46a1f3c83ef7e5d57195d157df70e554e1f15cccabfa2fd1b. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/PHW019800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c80c1e6d29c8cb8b16a311948ce9a086d34358569a4d90be421a16e838218f9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PHW019800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b694c3893c4602d8a96667269d1e0605db8c98a879538cf5c4990bcc039825c. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PHW019900381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eda1483067eb659c23b58de5eafa9112a3841e8e31595f7f95cad7bd63640b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/PHW019800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c80c1e6d29c8cb8b16a311948ce9a086d34358569a4d90be421a16e838218f9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PHW019800166.
Kitsuné Maison Compilation 10: The Fireworks Issue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ae1560401047104594d286bd4d11629bc60f9bac53098fa80fbe533915c97b. 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/GBGEY1000111.