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 0x56be09bd53109696af1fa8f360be7c44fdb1e634a35141602f4d6520fc18a157. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2bc6003-e294-4a97-b4c4-928697c4a5e9.json and https://artists.proofprofile.net/proofs/artist/b2bc6003-e294-4a97-b4c4-928697c4a5e9.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 0x571e8dfbf1a561be79b68f4c85f97e93b82a343a9c1f9d543202e42450e06868. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:51:20Z), 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/QZTB62506690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013d1fb4d10d18841bd636c7d4605d945949e656f1311b412323fd0ce16103f0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:09Z), 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/QZTB62508871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd18dd60e47af5796a618f9db96d2af0cff1f0afd98a8df50ccedda36a528a8d. 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/QZTB62506688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412959f925e3ed74ce6d941282bf8e219c11d07e09f27c755866aaf9f2656fe9. 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/QZTB62506691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88195bbc9077ed19e3e66920b221f11c93852a77331c322fadb6cbbe43cb2440. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:39:28Z), 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/QZTB62503313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae035c4019126346929e53ac3796542849451be24df5b4af2312bfbebe817218. 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/QZTB92561923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4cfb97aa7d98ae52c15b7051289623a775ae836803b6a90376c1011822a8ed. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTB92560289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aba5ff43714640ef37a980b037a8c9c3cfd64fd7f94b7e30c1c0710cf9c1503. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZTB92561920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c4a52bb3ea36e196754efb2fa76ca71a33a8eb639ffbd8b237eb3b04b9c6df. 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/QZTBA2550742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4dfe2f208ac24fff8e3b3cf5e1296453dabf0513f967ffd127763fb9ef6325. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:17Z), 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/QZTBA2550739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4d32ce455fa791801f0312df6613a806c88d40ac76812d648e586adb6071a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZTBC2501722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32b3ff31cf84f4d62386590de948c9484e60033b66d0112c3a290fe27f24013. 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/QZTBC2505053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dbf87becc8c5ddd7c4c5188b168893ebf603f31f4c8be4dcbf73235a3b9cea. 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/QZTBC2501716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef9570f10e0bf20ace5039c126a617b8eb2b111d2de0ef881a0fa6920435856. 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/QZTBC2508469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf657efec08dfbb48189a6c61f2a9111860cc6c47c3190bac2cbefbcfd060d6bf. 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/QZWFE2551423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0645b340460da5929cc5b29fc7505ec862a4070e5cdbd8fca9362156fcbef86. 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/QZWFE2551280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbddbef12ad0d4cf688971d7bc6e57ac9b68eb52346604456db47eefd2b7ebe. 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/QZWFE2551156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3b5fd04fbc01b57211e994228bb221e4382fcdf1679eba9a891cbf82867347. 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/QZWFF2510688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0806cae456e4a43410e54236d1d6b39e9e9de4e857f01ba5e430b8b7b819e4d. 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/QZWFF2545904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f639aafd75d879f5fd87a3d0881569a9c1fca32c45150052956463dafb45ca. 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/QZWFG2526170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd14460c598cc83a23847e5b9b020f623ed0a9746dab94204406be575ff1e3e. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:14:25Z), 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/QZWFG2530785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c32fed341d7e0dc05991c8d6d2ac4ce684c5312a01534dd3085ff1c975b7c91. 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/QZWFG2534137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5626583251d07c3f7da03b937197dc51da3f0a10c16c7e90240214958c6b28. 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/QZWFG2532399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b8e7dbef1b9bd9cd6e4b9b4132934d8d3cbb070afe7c0184c2e64f98e26486. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:22Z), 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/QZWFG2527984.