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 0xda26cfb311190b1f583df5437a8f49020114e4398279afb55708405306686e36. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a6f7c512-8417-47bd-b065-8ca4c4dee778.json and https://artists.proofprofile.net/proofs/artist/a6f7c512-8417-47bd-b065-8ca4c4dee778.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soirée intime au Théâtre Petit Champlain (Live)
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 0x30ba07442499812afd3de1b5ef37b3ad8599c8676f4c819e22e35f9ae5f3be32. 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/CAA521812508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5b9ef1cfcc1f5ef24d2b82765364977cfc1bd99b3ae3c2cdecd9bae95453ca. 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/CAA521812510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d636f5ef7d48638e73a93ebe206899b41af1c0b74e7da84140a67142d421af. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/CAA521812512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee58189984f2712a5c1c7ad66bf9fde8ece33f1d35851a851c6c6c55bbf010d. 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/CAA521812503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eadf3325a273867a5d0d3f39ce4b32d102c93f671bc72d6c38c25e96282c70e. 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/CAA521812505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83d794ee1284e188e99663f98a267a19d1e376959fbc7c1c42486ae474366fd. 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/CAA521812504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a9b0f5383adc9ddcdcdcacb5372e5b190e8832aa4f4e78276e7413024e723d. 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/CAA521812511.
Incognito / You Raise Me up (Medley) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc20495f160b3c7d95299bbbe1c16cbbc10bbf7eb0a1b7b23aba87e2483dac36. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/CAA521812501.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b63f44f3c1407f6977d0360869f3c44223b3a9fed7c9d056e0539fc6b586a0. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/CAA521812502.
Berce-moi / L'amour existe encore / Aime (Medley) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2dfa4fda9f0dda2e66954e633ae895e3edfa61d7c08e02a6acc328d614393. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CAA521812507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06617c7bb6de3cc5dc738290a4e41fc979e11f5a075c986d1b1ff23dc8c92d3a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CAA521812506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca263c0ae93272991bed6bad0863156854ffa34dc0cced3e05f0e6d083b06b4. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/CAA521812509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f27f5059ee9c96b8f6fa47afc6db8974beb49ec3702e75dde3b034e77665b4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CABL30800826.