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 0x29f9541c6c7a8f74855643c26efc3f85cf1e738e2d16c0e1de9eb0bb7f70dc23. 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/26ff3c62-fd6b-4256-aa76-e2b3f0475fb4.json and https://artists.proofprofile.net/proofs/artist/26ff3c62-fd6b-4256-aa76-e2b3f0475fb4.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 0x68c7d91f94372d37bb6a356d9a5ebffddfe20f3242692b166c98378aaff20681. 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/QZTB22231907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3b8bc340b5dffead7bdde5352112abab0881eb0ec0bec6ba937c0477c1e225. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTBB2209333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272f8ee5e68e091371e3384a32298a3638f8d04f98aaebc396ecd2601f7309cd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZDA62378933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f40bd788223f7e220e0e7609280e69ff2ceb40f6a822be0f403ff80c1883a. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:56:30Z), 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/QZHN32359402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b1bb6b83a2aff72f89ddc963a640e1caa1be9a2b8b20a714250dce8224a4d0. 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/QZES62337387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90f9210dd69b9a845eccd437782e74c9de8413307d7849543176f5294a4727a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZHN52330785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45af6c57711b30a0251c1076a2f3af06f32c8985d1b6d4ae69b5587df7c9638. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:34:45Z), 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/QZHNA2364714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8990730c9d8b134b5dc354fcebf3c164371c71beefa83bf39df7b2a37b1edf33. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZMEM2393298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e968d89b6d292a9047b7d454b1acc77cad1b7b65a35a772593ae5aa388ada83. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:03:36Z), 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/QZMEN2356816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ce90dcc45a5906cf4a1bd335aca6fb3ba939f92d0bb7ad5847ce7d8d4b0bd2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRP42329372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c07b6cc55fffb4fd6f59c4bb5da00aa8f8da247a538ed364d08d722e34e07b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZRP42330121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97091de1c9f5eaad13878cec15d963ec69623b34d20551c48dc348c93defb583. 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/QZTAX2373458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f07c87bb1198a4316b583eab9d7d4ba54c11fdcc71f588849d397f43662078a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTBE2327153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383d3c5fd67c23083b819d6b975b169397c4653639c1dd42835f05840ba3e2e5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTBE2327650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f5255d0fad1211659a6ec02919ede6c14153cdb863d3862f9dee5690a7838c. 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/QZWFM2316118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278f876d5b4ab86c947fa9681c1da92b161913013eb909ec4dc2b7e072dd746e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ42408612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e95d1f3ccc3c9959c3b4d70b79e687b36594b7ce6c82aad0144ce5a58071776. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:52:54Z), 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/QZHNB2413615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa769d14e42f577981f1f676f4a98d96a58c143fd0b5e120ecd1c2218307b0224. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:42Z), 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/QZK6J2446324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33418e24581a5bd1aaba6e27b3c8a95bdf33c63045b7764209b05c7f64bac949. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWY2415503.
The Three Little Robots & The Dragon King
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9533aabfdd95207541b179d524534ab88bbb4993eb08a885f04b69e21ad82c47. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZTBC2412254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e8c916acff8aac0982a41983cbb224c14b37196c5c2c1b12c353930e715755. 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/QZWFG2462590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008c9812bb7c75c0e85d2a7ad38207c6fbc520e4160e51f50b5290ed202b0eef. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZZ7M2420958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbabf6b08d0fa9b37ac38f2f973035b7866b2e525f916d8eeb981a42e2205bae. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAV2500816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7081549dfc27a5739df94dd227c028967294e3342777b187f78456f4b529053d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZK6L2513169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5356c13da0ae2a0950d03e6e213ca89e8bf3e69cb380cd6beb7a2bb69fa9c6cf. 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/QZTB82544993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd415b3993d66530181888a5cbe277d7292ab97078be9514ba1c24ddeedf13aa3. 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/QZTBB2563014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885b0076a0529bcfd8bb2ba15c43e355995c13e540ae8c00314d8c19559c3c45. 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/QZWFG2565083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ef441e87462d5f2193f16afcba556564d4c731bbd0c34312e7b27728b3d4f. 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/QT3F82563808.