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 0xf1a51edaa6139ea4699bfddcb0c7ab38322425cf381b80984437cd4df62d2db3. 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/e47de077-04ae-47d7-be7c-07de44f0eaeb.json and https://artists.proofprofile.net/proofs/artist/e47de077-04ae-47d7-be7c-07de44f0eaeb.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 0x2579a15e83da7e8f23a2feac676072549348e00956b307cc3bdab62a5730d417. 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/COA6W2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3a9deb4610a5ccea3b351e58932179410b6fd77a34c7ec296bc8e5804fdded. 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/QZW9K2387986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3cd3b39671d6e52f354ce69c3735d40d24f2e1de7661bdaba50bcde01050a2. 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/QZTVM2377495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4795c77df884e96aee55fcb18f86a8d7849be8b2e46f83b75d2591fd16ebe71. 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/ARIXB2500373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2fc38828b4d0a18656b96b2bcb8a5ca194466705cd953b73a1c8bf475dda4c. 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/ARIXB2500374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba333e59938a5711f9d7342877600ab72c8f6f8fe3016fab9ca3f8e7d350435. 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/ARIXB2403590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2524973f67d594921fe9a27b1a7de862e7026bcf1099838e3e526e45ed829f85. 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/ARIXB2500375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1a5a86ea0d9a774fc6dbc5786675aa94807af3868f5537ceb912967a5cf592. 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/ARIXB2500376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51085d791cb9140a5db5e7f9cff992bb8dab26f6304f5f9ef60781bfb4a0418f. 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/ARIXB2500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130df42a567eb918772da016f9553ea496b6838c6b39ada88d07c7c57ce57552. 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/ARIXB2500378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f9ef54c8a0ac40be8b73dae32cffad064b6cb0d407a8599aa67e5bdcc908c5. 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/ARIXB2500379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e52ff07c2d5d10dcaf3842a858bf58d2efe2bd42026f725bd6953408e54165. 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/ARIXB2500380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50121c70db46eeacd79b0ee34dbe631913d1cd9c143a2c3d72aa579c65be2afc. 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/ARIXB2402366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1211229dc3172c503aaebad639c39c5780fd923440bf02097337924e50a284. 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/ARIXB2500381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73079d47f362bd66132946ec2c266d7e0df10faf1b6bcb664195b6996f329fc6. 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/ARIXB2500382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d736ca1b04e29b08d00cfd2fde6b3b5abd75e3553028b689389d9290691bf34. 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/ARIXB2500383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d785dc3e3a3ece84640353aaf410a6c898022f9bdf7b313aa174ce4cd82b9dd. 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/ARIXB2500384.