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 0xfc7016a40714d032b57c0e19839045be7710820b192b75394ff17cef58aa685f. 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/0d49f579-d230-41ae-8c6a-1b57fc4d6135.json and https://artists.proofprofile.net/proofs/artist/0d49f579-d230-41ae-8c6a-1b57fc4d6135.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 0x4a95fcf3c99454a06f23e77e3819d59431fd47e98596fc888445606313d2f999. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAIX2467727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99764f6cbba968fbdea481322c4f8a14a9e7552c30f8ec3c6044078c27b6a639. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:19Z), 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/TCAIX2473811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a7aec41b772ea5eb7511cdef640041ab9fb1118201be9fe62ac43468f329a1. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCAIX2473775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4947fa215ffb00d9f5922ba934a6deee41c56df590cfff8293c9db8a46f51125. 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/TCAIX2473836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278821508e6bc508d8ba5a2e2f58d0ca4b1839be07220ed70b10cade8c28ad5a. 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/TCAIX2488969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f3d764edfdfb291d6d009827bf4433156bde7cf936b388ba60cd100fdcda71. 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/TCAIX2497492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1338b6f3a010ff58ea7749db35f2c02cc61a47da80272941e92d41bf6a1dac. 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/TCAIX2497563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c947f3e2cf6c65fda28c42712299f0d62ce2b362fbf87559bcc33b1d4d9ee8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIY2408353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb5da987ffd8a53d180d2d33792b65bf75812c42ad079558d26f8be7fc898da. 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/TCAIY2416027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39df86fd4a20fb0e7bad71952c0997f5a8c2917d515a306068e876934d781c64. 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/TCAIY2425947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05037c28509dc4282a4378201c3dd3081ccc0f05c0910adee2753e275a4877d2. 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/TCAIY2426248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93a38949dc2d82254eff338d0e9790e545d6cb17bd34caec24c6dc00bfaa4e2. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAIY2426116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd926e76b62f9eb50438bf26f1f0ff3b139ff04cba643fd3bc3f05f146dfde83c. 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/TCAIY2436524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e46d920fa531ee0665094952775d6144731a171ffeb30dc1aaa35f74dd295aa. 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/TCAIY2436809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949594bf10ba16d65dbb157817feed2e19e681fb807275404431f741df1f15b0. 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/TCAIZ2400624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474d475cd200a4ef457749e33ec3fc4fe7165735381c6e3c3a56014a3325439d. 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/TCAIZ2454712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81e1c6a24eeccd142a0ba7d672dfc1c0d93e3a2aee40f5eee8cbc0e8bff5943. 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/TCAIZ2454698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6980286da06cf8d0c6d5b4a22106d561bf253ef7bc370b412f46c961152cde86. 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/TCAIZ2466230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe522965a808a165532b3b74f3dfcab61073c018ae0ba3f41e6228bb43250300e. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAJA2422176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ea5ea46011d279cfcd1eaa4314053a7599249e60ff88c2e38690ed1aacb0be. 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/TCAJA2435720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd792f6aa3964351a6f6e18acf17eb82d592e366482a2c7d8b915de458ad953. 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/TCAJA2479272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaeaa667c04725019ef0c128796902c950849b6bdb444f560c159fcd8b91edd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:02:15Z), 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/TCAJA2488571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e9d944fe2a9cdfb9ae5349386004d422fed4bb7ad46ea304bdace0ecbab773. 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/TCAJA2488492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17935157e29f7d3991e2628944d4238422f0c500f567d6d0b0d47f3982249fb5. 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/TCAJA2495971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe421699332a5c2acb9aff403a5d247bff4db0986f8c88e31bc0ba93778565ed1. 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/TCAJC2444786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7de9c572db649c9186b527c082678671c18b913bac9ebfad9b8b05c47b740c6. 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/TCAJB2455133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bdb2be5c9d1a96dbcf66396094276ac2520e90099aba2c34d35b8d49e32775. 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/TCAJC2437781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e23eec53e8a9f090d49383d508610c5df3e1df2e21e3c3ffc4a5723f155cf00. 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/TCAJC2437831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0607ec5c81b3b1d9409318cb47eef0fc3ef22cd7870e2ac66b0c099fcfaa00c. 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/TCAJC2446307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4563778ef84a1add992567f0e34da28d812ff64db709af0acdb0200d2668b089. 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/TCAJH2542331.