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 0xcb3051822148044609ec0d7ad22718404f6b5e8d4d8d0ce3a2cf7cec6c311504. Chain 2 (Bitcoin): anchored in block 954729 (2026-06-21T18:16:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb07e2ab-6700-44f6-a88c-8128ec21120d.json and https://artists.proofprofile.net/proofs/artist/fb07e2ab-6700-44f6-a88c-8128ec21120d.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 0x178bd33dc06398f324b4f2b99ee20a3d642f8b56567cc1a54b83b7e5bb327516. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKA9G1700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ec55db886dda5353f868045002ea80a90aa38015d9e0d4c5da40f1e32f5153. 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/UKA9G1700052.
Flowers from the Ashes: Contemporary Italian Electronic Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06b48b4be79fae9ca626fd5ad3a599b46ed766af29e56473b2b808f618260ed. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T08:02:37Z), 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/DEPL91529304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb096aa101d3d1a88613cb2e7ac101a72684d1f3d38b2c848a3f17c177b962301. 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/DEPL91529311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b496108c5a1c46bd2b7f02c5e5cc8db6b3cdb9f8fc99e170b8ff1e74e4cc698. 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/DEPL91529312.
Contents - Pattern Series 4 Remixes Part 2 EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d244666c6f0286ab202b13943d4c242878cb5e751206bf76b4ae24b4b2e2bff. 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/DEPL91529357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc304a895b9d4f5cced18339aae8430ce3f899576828892e77182360460b10f82. 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/GBHLW1802983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612809ed8edf5503731b86238e41d2b4642fe085eaedda67a9b469e1686b98a5. 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/COAB11900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4757d29825a73b9be5ea0f9d6d09ff93a5154daaa7d228cfb6b57c64538f39b4. 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/NLM791700020.
V - Five Years of Artefacts - Chapter Four