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 0xbc3d65b7c9834fb2afc3615aa18ce90d34968a4d62efc3894351b56b5593422b. 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/e1184581-e571-40e3-bb0d-2ac51a877023.json and https://artists.proofprofile.net/proofs/artist/e1184581-e571-40e3-bb0d-2ac51a877023.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 0x696fc002c4a750c8689850d9929fb373b5fb4fd6539fb75bd763794dc12ce211. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZFZ62055224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2f0647164fbca0f9a54af9ee9e4a0bd8884025fcdd8152f216cb7bd50d20cb. 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/QZNWT2154867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc103c1c7be5081bb7add9b6eb7f95df14a294812e6d151296bd9ce931112ca95. 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/QZNWT2154868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca878d24dcf272064ee43ef155215ad71151d911d7de0582be2c05a5d5fdb08. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:57:17Z), 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/QZNWT2154870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f239b93dcf0000e334304aba3ac63f27c3b1f61da3c567c61706a126a0fc084. 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/QZNWR2123207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45108f1f255718cc84d524f1748da836ef4ebc439d89f2771f5abd57fade5a43. 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/QZNWT2154871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8170b100f63b298bdb0783b42807a30e921ce6c3878ddf74791f6eb4f77cc2ba. 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/QZK6F2324405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fcdaab1cecfe0dadf1729b5c72414aca9a6420712c003ab0157fb1ac086e26a. 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/QZK6F2324410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b96ef5726978962bbf4c50e3cf9b75fa47d57d5e9c43f534c7e539707b5914. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZES62354769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847859e09c5cea46bee953d4a2d1262cc247ac680c03fac29e1d72e5c888695e. 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/QZDA72499872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8c3b9d2416408e2733401f47644aada88c0dd95df030c2d0ec5a72cfed8208. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZK6K2471106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba92a8a20c234adb9f6094463a9f37f655badefa41910b743de99100045d589. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZK6K2471108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e7a107e424e3360b84b61f844e9629fb3c7baeb11df29b852c0aeb3b24f4dd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:50Z), 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/QZK6K2471110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe44d580d909b9996162b3083338213f988772419e89dd85b7154625cb9c6cd2. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:21Z), 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/QZK6K2471112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9891dbf8613e21c6c023d1df7d2e2c3389ef45242de9d09d1a73a1744799613a. 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/QZK6K2471113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd17179345214475f36ff8c72435d30039487feb7b7bf13212ad470241b31eba. 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/QZTB72422279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10a558c040bc6c34250ff4a8a767c45cca43c323de6c42c00687b4d8e585c0d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:11:37Z), 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/QZTB72422280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08766be815bbdb70c3fae4de2d98e02c8296a97d13a6eac0e965f6c03f5bc08a. 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/QZTB72422281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607403f5540f2cb3872b85c4fff596a22233366c737a0191b6061524ab879c7f. 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/QZTB72422282.