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 0x2767fb996d72d59b58e23634c620a33822e1bd480845db519cd31b553cc628df. 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/678680cb-0832-4fe3-8a8e-2b5ab912ec20.json and https://artists.proofprofile.net/proofs/artist/678680cb-0832-4fe3-8a8e-2b5ab912ec20.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 0x779d52c3a7426414719b372e5be2da20ba88bd1cfe30824643d24f9e060548d0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHNA2264494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779d52c3a7426414719b372e5be2da20ba88bd1cfe30824643d24f9e060548d0. 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/QZHNA2264494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275a9246bca80df9295a3e2927d30776d16b3c3ccb7354c2e20233743c039a38. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6F2225553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275a9246bca80df9295a3e2927d30776d16b3c3ccb7354c2e20233743c039a38. 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/QZK6F2225553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c53092e52326d473716623396ffc24da0234050d6639a5bc7f61cc55b24bec. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNWX2216331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c53092e52326d473716623396ffc24da0234050d6639a5bc7f61cc55b24bec. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:58:44Z), 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/QZNWX2216331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3682c36b6cd066b219cd9a0ada888a01ac0d3404a456471116d82a6859c82a15. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWY2216705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3682c36b6cd066b219cd9a0ada888a01ac0d3404a456471116d82a6859c82a15. 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/QZNWY2216705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb479df8c92696138399aed2230cf8f663053ee7ef3e722866ad6fa2be09054. 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/QZNWY2216706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602feb38dd881ecbb527ff624fe261f2421197ea776433244baee61485ee3a59. 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/QZNWY2216707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104a6f51e8a51f9e38b7b09fb6cb90f4017b10dd9ee00ec47beaf3d0fe32f31c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:12:14Z), 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/PT7OC2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4117b48583741abc7391e492cf81b5ce57e7c24c4d0bdc572fa5ee5b672188c8. 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/PT7OC2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b949758210f72d7ec246822e2384ee577b13754f858e0dfefe3737238e276eb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PT7OC2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104a6f51e8a51f9e38b7b09fb6cb90f4017b10dd9ee00ec47beaf3d0fe32f31c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/PT7OC2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4117b48583741abc7391e492cf81b5ce57e7c24c4d0bdc572fa5ee5b672188c8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PT7OC2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b949758210f72d7ec246822e2384ee577b13754f858e0dfefe3737238e276eb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/PT7OC2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a9431d13376a3aff6a381d976f3f549f939bb20bac5629b4c1abef98b3adef. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/PT7OC2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc480087bf441704d031d2436f55cb9f82a045b19d0998d009706d2954694bdff. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:42:40Z), 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/PT7OC2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb6e11dba89863d9d560986fa46702a144e36be7f8730d258d074a29cb56121. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/PT7OC2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67312ff776719c1237ebc80187d296c6a1291ec6e6f3ecf7d29e42965666226e. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:42:53Z), 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/PT7OC2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb847e3dc62e0f4625732bbc82eb3204a6fef3225d797f5f178b23409295ea6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:44:48Z), 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/PT7OC2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dae8601ad875036a13c75ba003305eb0830ad689b1f884da1b6d227717aa88a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:57:37Z), 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/PT7OC2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8941fde6f335c4e1d9b8e4af40603eb4c2a6dd0d9ee28d98e1a47afc4a5d0a9. 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/PT7OC2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ca1829e9f3f24cdeaae70fda33d8efecd58a6e0f37f59bde7cb4a5224b49d8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:20Z), 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/PT7OC2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7248251e10e2d28196f2f6fb9c964c6af6c27201dd37de3daf33a97eb6cd40dd. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/PT7OC2400022.