1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xe343f46b92b2218a50d403c913930ee0e99dfeec936b23a167508b7654b181cc. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c2223ee1-5765-406c-952f-7e9b3e005f8d.json and https://artists.proofprofile.net/proofs/artist/c2223ee1-5765-406c-952f-7e9b3e005f8d.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 → block OTSBitcoinBlock must exist at that height 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 0xda7a9f5ff84f6c1206af03b68ca7bb80af41f5eee45e01326688ec090b90c531. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QMFMF1435228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0611c5c774a9edfc7ebc16409371b7fda4b620d3005b615fb5cf64b669bf48. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:22:00Z), 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/QZTPX2446209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dadf14f183f172cfc5130e77ff0246b3257ac25a61e5d1dadd14aba531260a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX5MY2403633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f4b73c156d56f2618317ff205d0cb23fcc8af59aaa0996d4a7897a2d7c1c56. 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/QZTVM2491284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ba536ce474df2e68814cba4ce35216d810d24219a1f2d18e033d9f7af5629c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTVM2491320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06ec25e1921cec22d475d9b7a62be953750d6b8d544d1653a2a46881ebec199. 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/QZTVM2491131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74afb7f30ed2d7e0928698b3fc619c68a0cf73075b2802b4cf5cab2d692c3a0. 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/GX8LE2596462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab65c70cb3dd135e065c96cfdcf22e27cacf4aa4b2f6ce635237c6bc3d00f08. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:16Z), 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/GX8LE2566766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e80248ceb7738ef1645ac9b792b9fbae57f7217ed8f2b9adcdd0b565fb6603c. 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/GX8LE2573498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5831e6316fc5d2c00b5825ad71aa0d5b33f00385cef9f32dfb9033cb66d2a03. 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/GX8LE2578999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1415b6b298cb83919d024238be0c3d800de1430b940471b816162d443289ef. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:05:00Z), 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/GX8LE2548538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabeaaf432a6648fee13c70415510cd892db39ce023fdf4a46c73ba727b4970dd. 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/GX8LE2552128.