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 0x23fdba646c408da84df71126e86a75ce8e330e2b74a43291680b66220c965aaf. 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/cc15e7c6-6c6c-4560-970f-a000d3c3342e.json and https://artists.proofprofile.net/proofs/artist/cc15e7c6-6c6c-4560-970f-a000d3c3342e.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 0xd2045a50c7fa7dcfd39fae738652298b699984112d2af2403209cdf0b1a16e85. 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/QZTB82469638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bed937cb5caaeaa33f27113faab9c807a1047d06892d99c32dca6f885e9924. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAW2464709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8788087782ce6d9ba32c4784d5315422eb2048358b145580bd8b55ef0b2b2448. 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/QZNWV2353421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b77da30eb74e915550807fd0b1d15f0ed9dd9cde230f23f0073d563f266be3. 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/QZHNC2396213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0801b5198ccee4d58a8a26a9486bf50cf4196e8c8c7d40a72d221c044d12d12f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHNC2389297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b4060da47182c04483a12b4acf412de19f15470450a1a12ba751d52c1e6ff0. 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/QZHNC2360301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d1f793a172694e47fe6149c21b95903c04d2970ed32dcef86cd3f6327b4277. 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/QZTAU2284344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc965f3138b3f594d8566ec5999e2db35de08de25e7fca4350c45b00f1b074d6e. 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/QZTAT2281663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe022a20a9df70ad6675eebd5c093727328daefb850971ab232cb14e90ae9bb4c. 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/QZTAT2269299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f508c05880711624f605cc2adf715e96035e9f6c3933031796ec1bbd61d44e. 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/QZTAS2226473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f891ac32eedbd5f22cb3cfde304a0179eee36919b697b35fd001c035fc1acc. 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/QZRP42271016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c144c29b80170cb5a64871bf07bee9a11c96d1557c29a6c80cdac410c5b2843. 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/QZPLR2339584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe389daae7fd397e698369c0b72146cd3fc52bf757506768302e77992eb33c0. 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/QZWFL2415777.