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 0x054a62305f389de10ab2c404fec0703d63d33755080156607ae2a024096500f3. 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/0e3427b6-8c68-463c-b9b1-966fb651639d.json and https://artists.proofprofile.net/proofs/artist/0e3427b6-8c68-463c-b9b1-966fb651639d.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 0x51e066fc6c57c9944db325be00cdc4aba07fcf96b8ce13328606fa524f0ad98b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKPL2280284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f1bf06018c712c64790c34d956e119574aa3a2eef61398067aafc6baf527fa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2286366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a696890169b67548406e1bc223fcf93d52482168e390e4e78fa9fb63acb74d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL2291551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82baa5ec9255ee61b152f24db81b21a3aeb48fabfcfd372298be33dfd7eb485d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL2297134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326037fe0b5eed23f5dedd33b40b8b02b2d10a6ea07a93e0ed9ed3ab12001bdb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKPL2297135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a605dfd998aed43577c99998c6ebea3e332b50ec01a9f52f630f78a895b8db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL2297136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4caa341eb680f2a6f224fe6e5d00beaf605d4f10ac55aa509a362f2e866bcfea. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKPL2208183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bf6b4d767d12cea6a46334175082aab67a66e5c16a8abd1a9573505e294eb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZPEW2496118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ea4e8b0b8c580a7fa4dbaedf3a2005961173ab2853021f1b685ffc94acd370. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZPEW2443727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ea4e8b0b8c580a7fa4dbaedf3a2005961173ab2853021f1b685ffc94acd370. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZPEW2443727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa822306aa8607a9619541d7f48988e675ece610f37c707716d6da468e03e8d96. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73751afd05047827e2dbf827eb3e1aeb7a607573d20d05fe814d056de8563ead. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM24S2307850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32378593e3c787a54c7a8bce98d3d4e7f0a3e5b19da67e146248105f9a8edda. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM24S2307240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f1bf06018c712c64790c34d956e119574aa3a2eef61398067aafc6baf527fa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL2286366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a696890169b67548406e1bc223fcf93d52482168e390e4e78fa9fb63acb74d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL2291551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a605dfd998aed43577c99998c6ebea3e332b50ec01a9f52f630f78a895b8db. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2297136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e066fc6c57c9944db325be00cdc4aba07fcf96b8ce13328606fa524f0ad98b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL2280284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc5d0d0be45e3b54fb5348ed106eb92f9f8485abcc3842b8603db6ab2a39171. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ93L2049681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65107a79a2589470be0ded836941cdf7e5c50e408bc620d6fda5399b0c5a1073. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ93L2056013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78cb3e7929a5d6dc9acff4d6cd54798d2c5729251f24a1632b6ba750807cc6e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKPL2144084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdbc642f839cc6e7e629e5b675ccff99c10570e677f9b42768932dd1d28e4ff. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKPL2148826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263afeec953651ccf70979fb496c9be91c8a4ceeb6b5d640d56a646baa00cd67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL2154408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e64532c581e8762a25cfb706787d12039144f856fcb43ba5d4489bb3dd539d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKPL2151913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdbc642f839cc6e7e629e5b675ccff99c10570e677f9b42768932dd1d28e4ff. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKPL2148826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65107a79a2589470be0ded836941cdf7e5c50e408bc620d6fda5399b0c5a1073. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ93L2056013.