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 0x57fab9197be7b083e87de7ae970a589f8e1388d99498c1698f071f6ba430c6a6. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5b0e885-2d1f-4536-b24e-410376f73b13.json and https://artists.proofprofile.net/proofs/artist/f5b0e885-2d1f-4536-b24e-410376f73b13.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 0xe2e4ab02bd66d2838f187fd4ea9ac2b00ecf9cc16e65da21cf33b396d40d7f87. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SEYFX1500503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141cc58646f07e4212f4615e3d83cc6ab847157e30da953e6c869c9731a8fd42. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:55:17Z), 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/SEYFX1501402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693f2a7b790003a69c0bdd500cc0ba10e28f479511580026d5a0462fd0efde91. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:32:54Z), 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/SEYFX1800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f272ec99de435fed663e01ec9e0be59518029c5b3020f87f6154dc1716e820. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEYFX2301003.
PROCD100 - A Progress Productions Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ac3434d83dd023dd012e2324facb7e2202bb841ff10f0bc2ca3bbaf6e3fb1. 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/SEYFX2000723.
Natural Matters - Johan Baeckström Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f61fcd9c52d103ffbf38fa237702f5488ed71cf7c31023cf92f7c43beff7e9. 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/DEYX82246609.
Progress Productions 20th Years Anniversary Compilation 2004-2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825f6fb1c7f45769aa733c8457ed64a2a9c9642be2a10a4e5f34f18983b97fcb. 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/SEYFX2400907.