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 0x8d1eab1fa1dbc3d5a35553630b9b26d90e53afe6273bbb9209107ef794606404. 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/efd998a7-ab30-4d7e-8282-23fea7c5834e.json and https://artists.proofprofile.net/proofs/artist/efd998a7-ab30-4d7e-8282-23fea7c5834e.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 0x201d0e7ed84b423a53d542779e2f506936f5e39ed6e799f761dcf2ebd2351067. 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/QZTB72244847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116d614f458916fb8d62a34cddfa485e6db53b72d2ac2ef4c5619a9fb4a8f948. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB72244850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15559373cba42d61c582145755c546003439247f14f313fbad4a71d29c7c6dbb. 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/QZTB72244851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf000e9e58a49eed5d9786d04eddb4e7735955391edf1c3f3298b5ba9593d2a99. 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/QZK6F2398609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105716d980bfcfe92241663ceba07525b8dcd54b6a0c74f7b56126c4c9d99293. 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/QZTAY2398398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2398bacd7f2ae59d2e12a85df82600119806199b605013edc2e0217042145a. 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/QZTB52398694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a15f5171e871fe8cc6546728ff914bf2bc7154695b358708da85625db4a5f53. 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/QZTB92372008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c0e2da83247dc9bb6318c4344c2772d83b747424d6088c2f37c647cd7543d1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFJ2339051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5708d271d488213726f723f4782ed1f7d8f3b7c91228ef07cf61b7813d09ed9. 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/QZWFJ2339056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883fe6925cac3e531ca67ddbbb09769f9411921815859363f6ea4e3962e1d235. 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/QZWFJ2339057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0389b64a2e3c72472809413b3ce2233ea5104556fc18ba644518254ea53c9ac2. 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/QZWFS2322898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff8c53c97b685f1ea436b13ad556e01f9394945753045a027e2184b24e2ad18. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFS2323299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc280db422491e8f0b9e8100e1ed89196723fd73766f21c4ef7560eefeef4baf6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZFZ22491144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26427188c6ade7ea789e79d6b067a72d69dc6a43b219a2707b98cf83ff93627. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA72430815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd220ecaa0eaccd7b2e67a7436e57c5e958d9a532b4a4d5f66d8402bc29eff9ff. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHNC2472907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3d74becef2442fcf15b6d1c29027e2345fbb84431ce2399506304184affb87. 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/QZHNC2472908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b44e618c85d4d8368ff990ed4e9d482b365774c6a6ed9ff52e12c9985b3adce. 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/QZHNC2472909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b8cd4ccfab53264072d2a2c838723ac7d03bd113dbd0b9f2fdf3bf0265b23d. 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/QZK6Q2437551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13902ee46786c706fa821c0115092cc89996611ae1f7738cbc74800b7b2ac25. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:13:58Z), 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/QZHNC2472911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554ebd01ae730518c0335cabfbdf62dd539759a2521f64224e99ea446ca89081. 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/QZMEM2436091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ae0a02dffa3a5097be7c927d5b560cf9bd7d2e7cb22a39ce9b51e0e7209d2b. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZMEM2436097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618cf356b116519a74313cc24b306183f281b2b80fba8b0a99293f2cd511643e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWT2469351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8986f07a36f6d16c23d3b8f8e0595b8278c39b1185ce915333abae948f118f. 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/QZNWZ2402154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8de83fc302fe2e4118933d24fa2d25b5c1b4c29f99a3743037fc71655c3e8d. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZNWZ2406058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6c64be654c314a4246e9607708ddd83eeb1adf503e96ba8e340c9653498f85. 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/QZPLR2454990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807580ee54717dc0a7751d4c2e5516bc5d3f444b29fd30b7ddcc2aee335a2b0c. 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/QZPLR2454991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54f89d61f66d1cff054cbecb2cdc253702e9d88a268090c75547034b9a9a3cf. 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/QZNWZ2490354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08513212dd350590d735b52ef95cbd8a7a8f7c78790ad55c4b65cb8c697049e. 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/QZNWZ2490355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631b5b4610069784e752542573c81cd69e6465129bbd970902cdad8b7b6b821e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWZ2490356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4424647b0bc2571cafb25cf9b0b11e4afb603ef5705350395be446e80fc335a. 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/QZNWZ2490358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910594895f00257da8120219b2b2bee70af922e73955868c76fdd0da18d720d7. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZWFK2489493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe43109a18364ffafb4baf45f3e08f1d9c7dab2bbe32a3dd500b4974e32bf74. 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/QZWFP2459458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a42f3db029e948affed75a59b5d23088f742a2ed815a4b6a36b4780d19e12e. 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/QZWFP2459459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd935ccf5ad7a7a2466888d8306a87bfcb7b76bda20b842dd41f94c38e497fd85. 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/QZWFP2459463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f7fbdc831d679755beae76b1a8fafcf3800bfd7c8721bc8744aa64f1ae1cf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7K2411283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450dcdeece5169a2c031ae1bd22278f341ea6c4c55f83966d8e002862f3924f8. 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/QZTBD2479890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c7fb3e1ec9d656424c216e223b0829f5d89a1dc26935df120e805f8e55a284. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/QZRP52470593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25bfbaf5f9375969bd67a09676ae37b936dd4b6edc39b9715dd2f53fab29d9a. 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/QZRP52470594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6b72a2148b6e4e1600a3c0a318e413f175813775426587f15bb890eaa0b54a. 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/QZFYX2523488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d013b004f5b272d539f6d5945730d50454da15cfa893c73c51c62880a25f8b. 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/QZFZ62514235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ad009d96e1fc7c1e0b4ad61a047b9e873a6bfa01c2a4b15b2ab9259e80df11. 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/QZTBA2447852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf816831d5e841b2be2f2cbeee90ce6776f982cbc9cd32c050a978b506c1cddb3. 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/QZZ7N2559913.