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 0xdae720fd88c4bb0deac0d1877de09aa7d0322e80b1127ff55fda8bd20ba14bbf. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d7efeee-91d5-45a4-9439-76afd87791e6.json and https://artists.proofprofile.net/proofs/artist/1d7efeee-91d5-45a4-9439-76afd87791e6.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 0x6ae318e1ac0271df04c58d926cebddb574f4037af4685f6d5662f092d9d9d2b7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZMEQ2525284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb060bb1a05072326fd6a25de3c19cbcdba887ac5687c297610ce16b5b4105a55. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZMER2533377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945e40000b88caaf30b15f1cc10f33de6e02feb9332d0e4c69e918956de667e2. 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/QZMER2518644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d39426ed773fde91c6f0de1776b8acffd7ad87def9356a985e13c563665ddaa. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:22Z), 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/QZMER2518697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279118469ab178282fbdbcf0a43889ce89e8faee30b382bf09caaeffcf818019. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:38:21Z), 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/QZMER2519950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a687b7fdcb46510fec9ef542211507082c0e3596982b4195ea91cc3fadfd1a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:11:55Z), 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/QZMER2519952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4143aa9e4cebe1d941b415fa7ec497809f3bfd65c85767a187d06493cf368415. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMER2518736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b813a5802e73f129977821f879d63aa20e671be726c24f629b6852c57ae0e3c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:49Z), 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/QZMER2518703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe697f0dff290b99f068486ff776eba4b9388216ca2b11500f010c3e2468fb260. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:57Z), 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/QZMER2517013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e103beb19867dd3db09df0129b10ffb7c3acc81bd2fe0790c13c434c61c47d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:26:48Z), 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/QZMER2518701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f7f21bb5bf6ccd293e6439a6dc08b2a3b8cf6c88e805d60897b1ca422ac07c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:21:16Z), 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/QZMER2518666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac4fbe0d69c673e5a49f7b74c03fe81062bf135cd0e2fbe40d407819f5cdb53. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:10:27Z), 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/QZMER2518688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5938afc88f652f63c6cc99f17d19aef2edc77fb46407633ff95d64eb3f93836c. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZMER2518661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f660bdc7a33e13e7976c54226af40e53f89cc6382c866388a36b4d4801fa65. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:46:47Z), 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/QZMER2518678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17443dce7c766f098e3434a5ca5778fa52c3d09bbd8ef21de69cab4fb7d2c880. 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/QZMER2530861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8388cd5e82e103c07956049953f8a6c9ee3d3820e9ceac45659040f310efb71c. 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/QZMER2533442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59027d26d170086f575228a3b4ec95c41b95bdf5bdbd2a318fa82f54ffdd59ae. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:40:28Z), 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/QZMER2533437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebe243a7b015cd24c8c211740704c66aed4cd1e8306dac44b8eb60fc95208f0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZMER2533402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5162f8dd945db73632f5e35e4a884844b9622cb04f41390fb45538ed571d277. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMER2533432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb95ce78d352509a10d5c6bdc65e5697f6a88bc658e76e53cc4334f62614af79. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:43:36Z), 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/QZMER2530845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c857f715babc3d1914eac17e819cc36cf4fdcfa78a2864fa94964f3224ba35e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:28Z), 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/QZMER2533435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c562d198f14a6d85299c003f441123f0631cfd4e393cb6cc8630189b674dbb4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMER2530809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbd61f55ab5d17d63ac176a68b2eaa48f822388b19c161165f6356aae4ef73f. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:32:50Z), 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/QZMER2530898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3f2dc6626c88f55389d2b02d8ff868c2625cbe6be85b2bc968a9e1aedf2655. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:58:42Z), 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/QZMER2530936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5ab22dadde123e231558a6410b0f052c406967f24e7d2a594f4f7408f63f80. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:46:33Z), 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/QZMER2533433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449e29367a7c23fd01d9f0e7b2db8e9119be1bae5c8eff3628a2e9062f762d51. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:43:10Z), 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/QZMER2530900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbace8318c9d4c5cf8dea4a005cea74e74e1394c10460074a48b3155837f9b272. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMER2530843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20c73a1f2cb96eb39a628facbec44edd7a674eb245f2c399c61ba92025c13f3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZMER2533413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2c30cc48b6d5ad28ea77b7058f23bc03a5dbcdd30e895ab02a5373f02f0119. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:06:28Z), 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/QZMER2530774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f283c6f97109fc97cbe3df621739fbd2ee7dae58cc8184e6ca2e4298e21902a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:17Z), 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/QZMER2530798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc14b8d25bd492d20033c40879ec073a5b41159388ac6491c20e6a1521479066. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZMER2530823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0b27c26d707c4ec78f46ec51d88583b1dc30b0c083a13063df8ca85a24db51. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:43:15Z), 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/QZMER2533439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6daf8ce1b7de055a3abfd2aaa478419fde1e01037a73cf7525b06ddf62421f48. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:33:25Z), 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/QZMER2533451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23182e77951c013bd1e89cc47cf99adb7b69d7ca602297afbc51c07d18c03074. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:43:12Z), 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/QZMER2533406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3ff120269f9f62d7f438f0f4063bfb318b62c67fcefc2bab7510c4ade4b03d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWY2529853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40690574d06911d8cbcc209d4ca0ddcc242968c5de3b2045be4023484d9d48a. 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/QZNWY2543780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf72d043a13acfe90193c133cdf5e19618b9319f9adc6824c56839efc76a494b. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZPLR2588587.