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 0x41bf7a837efff25d1972d22bcad70bf70632f7dfe654bf8377270f13f015340a. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/17625476-bf51-49e7-985d-efb1ed335ee9.json and https://artists.proofprofile.net/proofs/artist/17625476-bf51-49e7-985d-efb1ed335ee9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LAKESIDE MADNESS (OFFICIAL HAT ANTHEM 2022)
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 0x81b47cdb49b30d2e6a90e1e61fa829f249014a99d3c0fa3a52c4590928e77d61. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/NLFL72300563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ece0abb718a46b18012f60a6f34fbfc8025603217a5db15db75b317f05700e2. 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/SE66N2337852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22874fd1555798945acb1c7a044778c785285f6d86ef83100046a595636179e5. 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/QM42K2414529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52f59513062007f82a8ad4fbdbee7beb63023d5b23edbc64663daa93d52f9b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:41Z), 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/GBKQU2450260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db47f164d96fe4b208d2ee8db8f2534d584c67f3457c52aa1c45d5a101eb988. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB32489197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c63f77fd5364fdd1ace056bcf7e4d4b7114e06707fe40c72838160a1e98aa3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE6SA2411975.