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 0xe90f6f45c992a435b7d319c3e483b89b72ec3f7a93cfc709f6849cfbb2f2334d. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/13a675a4-ec58-4f52-aa26-d8ad0307d020.json and https://artists.proofprofile.net/proofs/artist/13a675a4-ec58-4f52-aa26-d8ad0307d020.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 0x354a1ae1d05181f04f487b9d728e5311d483a359ef180b068096dec788c68917. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:08Z), 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/UST8K1693506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65dfe7648b176eee0039c6d21b0fd4e4892b59831505cef75b8386106a76547. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/UST8K1693508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f1a5f5a28be360107080e8d20125bd48ad1013b607a007ffa0b88334f77d0. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:21:38Z), 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/UST8K1693509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2bae6fa5554855efdd58d2c3d51cd9718f7241f9c068ec26160e577bd06278. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/QM4DW1822528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916be168eb9556f05d55caca7c62a0eb6864d23f30a3d5826eba84f3dfa5804b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ41921657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c376dfb1b01488838bd148b848cddfc9195befc1cabcf0467f66e3fd45f36a0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ41921658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb11ce1518729c0403c51197a124c2a0d0b30a367ca635c7ee41c1a59e8b80cd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ41921659.
PSYCHIKOS Reverberations, Vol. 2 (split with Congulus)