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 0x663e3afb4784a186677bf7bdea4c7fbff2d8298d8f09034bf8fdf63f63f12c23. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/55caff12-a3b4-4154-ae3e-4fc88f662ae3.json and https://artists.proofprofile.net/proofs/artist/55caff12-a3b4-4154-ae3e-4fc88f662ae3.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 0x675e562308a13064ab31fc1e1dedba86e9f5129e00f98b0cbd17bf63ad69f15a. 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/FXQ722200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3abcbbed78f731139c3dec11f9a4a442bb4f2333d8ce1d888b534ae9e25bc76. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FXQ722200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8489edfeb8d629ef0fba1c7de112350528782f5d56aab34d3103113f9e700e93. 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/FXQ722200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad82fa490b9b51b6d3dd7842eea3e880e084cf2e5e08cadfc396f4adb5ea9d94. 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/FXQ722200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d4a8c3a329effe804b9afd5a57c014e09db944e3f9fb8f5265d446f74d5971. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FXQ722200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9b9f4508d1c7846473160ce9e08a218624477045d0d8a5cec8ce1109c43256. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FXQ722200014.
WALLSDOWN II: Beyond Cyborgs, tECHnO Inside Us
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aef3b25df07f607b88a52e9ba0a7d4078f54694fa4c644eb9077ad6ad6c9bd5. 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/NLRD52348120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b3fb97de76bf0949565afba03265369bc3490a9eea58950dffb066046817d4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NLRD52348118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509295c1672904fb9532aa3b7223391d85d9d038ab697d0be887d903534dc98f. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/NLRD52348121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104ba1b066a891f2027fbaaee56fd81c7c4566feb827d5071a687d6a9770f914. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/NLRD52348122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ea8a9d0918d7105a0fe771dff3aac0cbcd086cd5660866071432ed0314820c. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/NLRD52348123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe11ee7a0f3d7e1418f21e77472692cadb1be31b4ae0663e2a2eee7631dd238. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NLRD52348124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90716be373226a41fe1f335528e12d5667a12d8b0989958ecc7546109afd48ff. 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/FXQ722300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4a6a6cd104f587c552a60ac6bae76b0c8431f92caddecabdfe073402528e0b. 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/FXQ722100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5052c10aa55d40502908fec3d5d64eac8dec947b33d3e3340796ffc0e443e013. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FXQ722100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f96231a92b28e3e50e04c17171c584d912a570349d7af38b4bf8a01e2a9c77. 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/FR05G2450120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c326af9499a2f3f82affd548c576f7ed52112b73b244afd6ad0a92de47a2ee. 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/FR05G2450132.