1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xc58f165054d91e89ee5ce9b59980f72eb0d3f740a791a2a56d2107f6d6b33a2c. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86f4de16-02a5-40d2-82de-9481bddeb557.json and https://artists.proofprofile.net/proofs/artist/86f4de16-02a5-40d2-82de-9481bddeb557.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 → block OTSBitcoinBlock must exist at that height 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 0x3493324cdc7efccead5c74b2576f8ada8fe38e9bf644ceaefdcd98ea76578005. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA52343247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050c36e61a818050a862f101f4d1d0f7be114801543d94b7dc474fcb0b5ba9b1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA52343249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f69d87ed8f4f95dbcdfa7f71e2a629b3b7bb94cdf45e39fede95662b01f70a. 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/QZDA52343250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdad6dd1559183204f8b0dffa8dc3aba8583f5c5015bba1bab783f69c2f79e4e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA52343251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa631e7e45712392d40336baeea2e44371506a20aeb6694c1a45582d4ae3c470f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA52343252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea91d56b2a4adb2123033bba12ca6ef9d4607a390aba18af3f966c2db5c74ff. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZDA52343254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a2c25430c5bd4605173ab9d3a8196f6c6c8fbe9fb659eb7884b3bc97218072. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZDA52343255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563d19141a764314dc5cfd8eb58e5dfbf40ae4838b4c27811f901f4e916e7220. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA52343256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceb834f6a0a30e317258481afae6eba4f4755ca291fc7b531d3401a4faced10. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA52343257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae124e8281dedfacc4ca595f987d54981e48289db06f2c79726bb751f3818821. 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/QZDA52343258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ba49d80e9eeacb1df19e9fc70951ce2698354f3d8b88872abdbc7454517cfc. 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/QZDA52343260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9477ef9bb9aa7797520df6f1ad1afb1f001325d1280e9c72b01838ad4581a836. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNWW2463965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434b35850e4e1d81b102166a125c392476fa22b4622fe1ea9b2a0f7de8d1a450. 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/QM7282303464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd27b7215b1d9f210a9581dd9a241c80a2909fec0e64078dbbdaa7f3dcd150e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMFMF2129627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670363136a6230d85c27a7eb834673f7b0d4049b9a6d0fa31f7fdbb050f3a9ab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN52485418.