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 0x835b21294d46700d76219982f71c98bd5b21eadfeba6751be063783eea1ee237. 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/70926d3e-4c24-426d-a908-b32cbb08f60b.json and https://artists.proofprofile.net/proofs/artist/70926d3e-4c24-426d-a908-b32cbb08f60b.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 0x2b8e7da313b864d06075c35849f6d7b9512fc62a941465d8432b8db8a78f883b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZNWX2120046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcb824f9f931700e974c5d4ff8ac8617da96cb79ff9aec4294474763ace0d93. 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/QZES82295763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7599ae37a8e13c6fc1bcdd6d2d1ed971fdbddca80c7d93a4bd873838d9c1c604. 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/QZTAX2256263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb093ae58adf5c4598a81f1d2c64ad00888f6361cdf9585add37950fec27f49. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZES52364899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910d4cc8c94bc3ff37b8dce612e3b49d15df18795f2b763854fc5478460a1c00. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN42385019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3c720e0d289c4a632fc90106150b8ea6e63041ea18aeda12646b15d856dd26. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZMEM2334743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ef5b1101a43c88cfb8d41e379d0909f212e501ccabe134a44921c2d7818613. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZNWW2372041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7180527922b4a1f5479f87b48c2e3caa52797c2f0d132a3a35192012cc420518. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTAX2337297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa55635bfef61dcb9dd62fb7d1fa2a21a0ab6014d79c1034669a03caa2363407. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFL2392177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e06b496016c98d15086956329547d879e2822dc4166eec04f2ead898e310448. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFR2398081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606a3b8657c36c6dfe2d2904c9886a0650ae8d59a3c92a0d29f6f14975afe7f7. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFYZ2417754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e46d52f9b56c3af4bf9cae353b946001e2816f35460f45b51d386b6de570c40. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:33Z), 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/QZFZ32441595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3810ff61bad32ebf8a397d87667e7204f0677d8ad7f695c5cf0338f3d4a019. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA62492289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b7ede6b544ed9d0ec59f40241f8a89b59fc1a9321807183a795a7d96c38963. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES72483742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb56c2fe454c4ee00412e8ffbf878d8afad6d46811b1a4ba2887b5018c2e0461. 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/QZES92439565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b9c31f98e5d1a7d0cd11df38cca180f64761fefb3ec8c9699083fde7c9b8f9. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:11Z), 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/QZHN82419377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cf3c222d956b54b7331c11238854110cb34710b175bfcd51477cc6c0cea4b4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:00:18Z), 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/QZHNA2415292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a5191ed7e6df63802508f8a3f7644fa31b94cbcede6fe84e4ee64819e19414. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZMEN2437441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532367fb1bcff206d3bb7fa2d915e414ce7351847d0d940becf575002f93a663. 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/QZNWR2491474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44322fe7e9eedf6df6375048f31b08684acd24782f97cda6a84b3595c2f7b1b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWV2471974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7faede78c0e214c5c712ad0b66f664f4a10413e8a97d97302891eaf26740cc86. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/QZNWX2463206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063acfdc3e39dadb1935c204764cceb5c2ed7aeae4930f3035945193ad754fc. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:57Z), 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/QZRP42478241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9acc11c23059acb666c1a696d43baa66949c6d215ac6ffae4ca0c51d8baff0. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBB2599733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7959c41f9679e68fac4f2accd18e8043c3581a883917f51ce97100601c9cb1e. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWFL2538435.