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 0x7fc506dc305ad873c6574ad3f2a977cc6f234f7987bb0ba60b4da24b45fa9540. 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/97363162-1efd-4f17-aab5-75ed41daef48.json and https://artists.proofprofile.net/proofs/artist/97363162-1efd-4f17-aab5-75ed41daef48.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 0x6eeb4df12c8fb3545642f6da5ee5c07b30319f57ccba748b283c8a6cf7ab8134. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:26:43Z), 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/AUMEV2204840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc090ff1f359a381fcbc29629b1cf8a130dcc1e32a1bbb26ea06728afbeec003. 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/AUGBT2227076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94ca40eb1facb05a099746eb579bb5f0e539577d176fbef00569a2b6e80b4ef. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUMEV2323819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f21aae463d2170ae46159f131ffae4793f1002b1d5cecc424b403ff068db2b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/AUMEV2323820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6a4182b2bd2a486c3752160b2e4a2beec08b87e2bdfdd45fadab39e679f01f. 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/AUMEV2366555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35106e94a67d2a8bccfde164e02cd60fa4955700b24ae16360a3492ad04f172. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/AUMEV2396834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0faa9baf78a9e4f9b0fe08b342d741951ac847a24fa06f97cfb302731ceb9f0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:38Z), 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/AUGBT2416207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea0eeeac39da1a9a4b838ed3141644836dd82c7ca2ff001c301909db84ae764. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA0P2479515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc68cd05465a58e3b2845a069f089d34fcb6fe75fe693a33d8b783edc2e132d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:33:49Z), 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/FR59R2572066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea0eeeac39da1a9a4b838ed3141644836dd82c7ca2ff001c301909db84ae764. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DGA0P2479515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea9f26e79c708713cbb88994e0c4dd748c4a153b0b7477d2edf87f632027901. 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/FRX202506247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea0eeeac39da1a9a4b838ed3141644836dd82c7ca2ff001c301909db84ae764. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DGA0P2479515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fda8f6ba230717fb5361e0f4827c3f13c04694afa844e69b6cbaa8430ed3a3b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:04:08Z), 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/FR96X2532486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2d6efc0f0ee037bb55e5de9c11c629801d199fb42a59e9154e0ba8d7cf4a5b. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:03:29Z), 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/FRX202506248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc68cd05465a58e3b2845a069f089d34fcb6fe75fe693a33d8b783edc2e132d. 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/FR59R2572066.