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 0xdd630982deee3a0a03b73312569808f56ea2444c7de88ff8f56d74377370ffc1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6d8ec38-f08e-490b-b97a-9a3c98cf8d54.json and https://artists.proofprofile.net/proofs/artist/b6d8ec38-f08e-490b-b97a-9a3c98cf8d54.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 0x2c206e77b8075297c880838faa59db26df9936aa8720ce6b0d3adf57e50fd9ce. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNMV2192074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3e2d7fa06c89b0c15d3f343bd6b31c6ae1471ecc640905ef635873cdbdc440. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZF8N2121469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8bf387fe60c1c7d86b741d9473a2ba9222b47984e54aef0c1815517a4a9ffd. 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/QZF8N2117653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a03a924ca48b69d4c3ba3bd7ab370e2f75d88b84cce54a03aebc578fca125e. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:11Z), 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/QZF8N2131036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ee913d4ddb143d688bffe91b1829ca12adfc0d3ebd481ef1b2fc6a0abed4b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZMWW2284810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8817cd70435f6bb4ab61c866be1e04fe6d64b4a6ec55e3c059178cef3134295. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZJG52387854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c1a32da17148c45ab26c5bf820f02b32ea2386e81390ef6984c0f314bbb367. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZLL92384081.
Angel Baby x Strawberries & Cigarettes Mashup
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87147eccea81ab9a7f474a0eaddca0fdc20f5b121dacbe6ad2157a83e94d015e. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZLQR2151484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ebb419f33c4874d88d7cccaef62759fcebc567aefd61370c3ad95c12138328. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AUMEV2469679.