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 0x5ea2c20d9570f7dde9c3ebdfd0481af829239072a5b80e2f5f9f9048261e3676. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b5e4a92a-b92d-4291-9919-85f64eaabff9.json and https://artists.proofprofile.net/proofs/artist/b5e4a92a-b92d-4291-9919-85f64eaabff9.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 0x56becf9f5a35dd6ee51f7db9afcf2aeacf861e898c9d4c8573b9c60a82e7956a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM4TX2107391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298ebb45e0568e5b2ee3e0a16532d8d236245a9c3272415e85750b3312c36dfe. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/FR2X42246286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20652bbc459c8dc73f57577afd830d5d8feef7fdb0acbb45be8ed83c37693641. 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/FR2X42246287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7307a331ab0eae2e8c6311d58af0620915829bcc9692d489fb7de216851485. 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/FR2X42246288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5933aa97f20afe3e0704649fa4ec7b257abac842590b673777d9b1cd5eb5f89c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX452274660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84340dbc9f9a829f234f41afa4ca26ee9a104b35a7a7ac7f02bfc2ffe5639d13. 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/FRX872394829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c72ffac6b610283d2857de64ec2011e98bd19961f115eacb4d63450afee562. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA092397292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cbf2c70218da2098a853b07328f4b8bca5c1389151b38eea9018464d44d674. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DGA0M2365962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fa10653eba4232ee0463f302a8f0ebf3a50f60298c18435c12738f74a3dcb5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:55:40Z), 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/FRX202489105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f10245379b77cbf9e6947cf3d618c7fa606f8d01670800bbc03f88bfed689c. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:27:27Z), 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/DGA052405473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c82f94ae237599194bc5223544dcc5f3632e3786a9eac26f298887decf441e. 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/DGA062443832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5027a028462205b4585affda880aab7d5e3deb060db17b1ec9b6c9e70d62e52c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA0Q2404894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6334d10fcadeb5554762e5e8acfc836f0b729fa2c440cbb2ab103681f63e0b03. 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/DGA0Q2404896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab8398f1acfe3c5d2fe433f812de47a1b953461be68afcc0457aca19ed54824. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:19Z), 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/DGA0T2411003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75852dc2b529dc8d9fd3dede5885b2d6fd0a30792e9c6305e8cf7b44226fd3dd. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:54:41Z), 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/FR10S2572703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261f75004f99259413295b6376de76c6f593c02ee3c86b841371088967716e89. 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/FR2X42566831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9cc262e0026483be1baae86743168eede7e4fd806baf0a2fefeb1f6f1ebe64. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX202553764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679d7b6cb38dc236eedaae01acf57fc8f4f77ba29da75245e3d529598e2ef0f2. 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/FRX452564427.