frame|right|Artist's conception of a white dwarf, right, accreting hydrogen from the Roche lobe of its larger companion star A nova is a transient astronomical event that causes the sudden appearance
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 0x574d61b136477bfd4388ed60490cc3a00c5b4ac13954b200c0559223d61db95b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68913be8-618b-43e1-bdbb-7cb4ac9ed71d.json and https://artists.proofprofile.net/proofs/artist/68913be8-618b-43e1-bdbb-7cb4ac9ed71d.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 0x1f8236138d6a34b25ae8c8f5a381aca208dfc55c03bd4579dfb24995915bf632. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKXN22435875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982d3665d6f02ac747ac2169a8edbac6df1310399c7ebaf1898c8d09b4dbe92d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/UKXN22428741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb1b23dcde4260e15eaf6624c99f84bbc0c1c61192153fe41a2c2308bbc7aa7. 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/UKXN22428746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158996b11ebaeb4b41090e8faabe073840d4e46fb6c165d833ede94ace4a99a1. 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/AEA0Q2377714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7174e5828ab0362edc4e89208f1960b67ae6e32ad921cf529dd456b859cef2d3. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AEA0Q2340476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5308301f48761725aff84ad6a5d7daeed0b84ec9783cf6def1ef3d2391728a21. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:59:30Z), 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/QZNJY2438883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a679a2ac313bb6dc774b98a1e1b14da2d00a24f562b0b193ba24b753250665c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:34:38Z), 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/QZTBE2409174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b46a356e1b2d41a2325117a1d08a439ea5bbe4bd82f0aace220050e078a2e3e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWFR2486898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbb4aec14e270a56e38396dee9d76cf2d7bdaf3d431b38cdc96b9b3744e009a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZWFR2486901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb193ceaa7cf76caf7b7fb0d77d222947fa4dc4f57e24320119385e0648db0ab8. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/AEA0Q2498796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966cd0138081d162670eaa1a48b8489a95297abd2607b52ec96b3642ed828a9c. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZPEW2596339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f6ba0ca251f7b8ff57489daaf3f0d39c0146e5ed142dfea9d1c5f8af2cad18. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT2VB2505783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d9e74d3e47cd8d7df87eaf70da98cea2d2f3f8729ad30e34f4517b4873892e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT2VB2509663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504f0b48d560463ab7c65d7135e6ec5db95dd2f30e3d76998564e53a61272c2b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AEA2W2536046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb959a7939a950e7decd907084ff021545864ecef24ef19debb484f48117e2c01. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZVEM2542326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8491fe575a4c2d403ba2f28c9f4681a9651e828abe99fabccf68a8c585f4fa. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZVEM2542329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032456ac47d4b7e03b4183dba78fed41675925f61053db2fe64d1d51fc44a99e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZVEM2542330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a17c0cc2a7723cab2d25c30a2f4371ca14fce11d615c16cb16b28c6cb9b8bf5. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZVEM2540462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72aee43d239ad6b5bf400c735f231c7355c8f6ebbba67c5b6e65ee2a9446b21. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZVEM2540468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb2b99dba78dac27ee77ca94de09020db6e84bae19498c7180e19e886ec7c99c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:52:26Z), 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/AEA2W2538122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b21b3f2f93cf1e69956181cbe54639a71956ad678930fbb3c454b1eabeba52f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AEA2W2538118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c51b965cdf81bfef00a6d3330875cca004fe29f84004192debb659b0f38cf8f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZVEM2563327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ef9bd56a108f1a8a30b5013f06f466ac947d079b71dc42225d1534cdb9f21e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZVEM2563330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260c31b4306567736e800c43507ecbed500e84fd2c2928a6190dbd9adf1a2e64. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZVEM2563334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d3b2a7220cf31ba058eb08d07278b361bf81ba6d5202d3037e36b1f014107a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZVEM2583306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2856e53484221af52177783751414325cd441b0bb387468c870427f63f3414. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/MX2832550141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc030505651d78a547bede8a5b414cbafba150700b4a46e1513247114fba1f6d9. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAY2584340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd360ea542e0db7db4bf3029739ace0cf1fde9a4f30fb79248230896a954e6. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTB82569311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b30d0423cb738c6d9467db2d3a87d7662f5a6beb8e28de0a3c6eedbd4f2733. 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/QZS7J2534437.