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 0x883b99763c2f3b88fa7be7c0a9e3942995e1dc8945b9e96b0a617fd03b6ba0d6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d2ef192-c6ab-40d3-9c3d-363973e99501.json and https://artists.proofprofile.net/proofs/artist/2d2ef192-c6ab-40d3-9c3d-363973e99501.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 0xcb34eb946b6be4cc3caa6da5ead349bdfc82e4f6d3721bbf57f2c731817b0cf5. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCABO1307156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc7a4a4f765fb6ef87cb3917c6830b895bb095e9dfdf9c6cdd5750f7a10c233. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/TCABO1307157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd730b41ab3b09807f5bc6aae5a9f9721017c5816bf5130b14ce9f9705f4fc228. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/USJ441500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fbe140ef1419885502f9dce51cf7e7de293e81f0cf8dad47d44ac1a723caf0. 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/USJ441500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0a45a197836b9cbee204a74c915c8d857f5550ce998faebe631226d9c4db02. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:40:26Z), 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/USJ441500016.
I Was My Own Favorite TV Show the Summer My TV Broke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d07fdaf4f5205448fa9d4c516b7ac3c9e8993daf7d2738e610c403aa67f6cc. 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/USJ441500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9457c171b8a5c1ca23b893fe3c19cb61265340efd138fc056d04e5fe4e724635. 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/USJ441500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f09014398af508200b36791ba50242ef2beb15e65785d2ab99beb16112778b. 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/QMCE71300679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9927c149464932891f582dab28863d851fc6be8d3547b711240fb0ce4d08541. 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/QMCE71300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e3811aa177159696f61cc53c0c8d38fd36bf2cc0c3392fa529c6cf526f8117. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QMCE71300683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e3aba638411cf986de479e3a9a4bbd2c1e70f9e2eae02245482034c1db9942. 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/QMCE71300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385e5c1f52ac422845fbd2ad38d04d1c026e1f92c87f03cf7723f06482261f89. 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/QMCE71300685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b5c26fe70d143587e2c1d8f372e33b7277dad2d22b690251b683eb2359f713. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMCE71300686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a761cd1c563ece2f057470930d190dc4ae40684f497b7c0e62f1b596aba6a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMCE71300687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51af35ef252107ac02f0e8f9c1e7b34ba692b4dea134cb0d3b4ae34783a43b87. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:25:39Z), 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/QMCE71300688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ec44f3f092d7e26e511d4741b60ba2173d68c211a1d996c16f2f3c2cd1aaae. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QMCE71300689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04a545b6cb53564fefa67e9f13f8c3f715efb4d614c400dcfa3c32b12b75f6d4. 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/QZHN82167333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd3af32eeebaa0fb67e860528efc6a4f2b49bf82beeaf68edc186fd53497d86. 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/QZHN82167334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaf7c6a9ea4cd9f22ada55f134438eeb1d331414c83d26b1d14462347bbf6b9. 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/QZHN82167336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2b27dac626fed467f484522da38ebf5e1886046c1dc3276ec78607623e5c9c. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZHN82167338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3308b756397cde7fddabe8e510b9bf2991bd83d61268824f7dce17e92d2ac799. 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/QZHN82167343.
I Will Do This For The Rest Of My Life - Acoustic Tape Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de1925e09287496237d0a243dae315d322db7c56cf8bfefde3dd7505895dbc6. 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/QZHN82167351.
I Think You're Really Beautiful - Acoustic Demo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedb85206cb870a6fe7827c4f7a62bfcadf1da68256c1aa235e8b66bf0e19362. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN82167356.