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 0xb3df27a3ed85339dfb51d991eee8bb9558ec1977eed91cd3b808e7a1a49c61b7. 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/f0838fbf-2f09-4fa4-a375-e5be50f1d171.json and https://artists.proofprofile.net/proofs/artist/f0838fbf-2f09-4fa4-a375-e5be50f1d171.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 0x2b089bc6d7dc6f2381cfe47cbc15b2e7603e665d4f5e2fa142f73ff971dd5c91. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/SGB502241100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd6d76cef68556aba6b2b923a90a925cf761ac2735d16ce74f475a100fed1e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SGB502261131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faf959e02beb11e9c2aae310c4ae46f35b672fcdc4a7bd61ea2126f0d625d35. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/SGB502262560.
Millenium Dream House Mix (Extended Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b089bc6d7dc6f2381cfe47cbc15b2e7603e665d4f5e2fa142f73ff971dd5c91. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/SGB502241100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd6d76cef68556aba6b2b923a90a925cf761ac2735d16ce74f475a100fed1e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/SGB502261131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b718cb8be5e4f85e2f228317764fc0084f875a3e07d03ed268f9a060a41f12c. 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/SGB502346168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0d5b28663834ef37227f353f586067d1eecc3c0209ef246e6126af6a552292. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/SGW502384884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e890b5b432e819e8558870d9ce170b931d08e42117d88ceba2d2976a95d8ab. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:18Z), 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/GX8LD2555340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2770a8d6ca86ed57e5aaf9e574a50b3e6ef4919f2941275d6f5c0125e436a4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:26Z), 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/GX3HH2591816.