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 0xead2301696edf5fb2f5bd54759ecec1fe92ee6297504ac690ebe8757fd95a691. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbf149ad-abe0-43d7-8783-2cafa79cafde.json and https://artists.proofprofile.net/proofs/artist/bbf149ad-abe0-43d7-8783-2cafa79cafde.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 0x786c51bd33729c6cf441dd4af8c794b230a27a6656074f9cc57156a36fb1a96a. 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/DEH742433992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0326cee378732a1a9130292a67faef786d6433e5415dc19c5b9ced3b5873773f. 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/DEH742428175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95c5382443e9ff14adfc4f3d57c13322386411bbf1a25af67cb06f9ad5f8a01. 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/DEH742431364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769a7555bd45e6a795868edcce4f398e400bdeb731d999590a35ee2b8aa4b77. 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/DEH742430017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769a7555bd45e6a795868edcce4f398e400bdeb731d999590a35ee2b8aa4b77. 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/DEH742430017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0326cee378732a1a9130292a67faef786d6433e5415dc19c5b9ced3b5873773f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEH742428175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f81939c572ba909198d47240e783474883db4be8b6caea22c7dcbc3d2048a2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEH742423422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53497fa11b46ffd904a41bf5e2e26bcd4b74cd621d851bd668d3265624e28424. 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/AUMEV2468398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d08d678232318e780fea89a494b690c5f405d5d6b1b8319ea57cb9365ef589f. 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/AUMEV2472543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aabf1d1fb4974387e3461dbf632f91176a3f5353817a232bb5244fc5d5dcbf. 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/AUMEV2456226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4106b839c23c6029e26723c6763fcd455b659236aa23940c222cd35d8f226778. 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/AUMEV2446291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2287940e5bc583bf7d5d38f8a24087a5806a78a71d16056beb5c6c2f764e0a. 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/AUMEV2435796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59843605cfcdcfb986e4b724eeb0f25fc109e0bc37de1b346f4284abcc56a294. 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/AUMEV2420475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008fe9f117a5ab0554d915821722ca8b76db7c8947426bf7539fc621528462a4. 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/DEH742443286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca9388774f052e0dd1043aecdbaacea008fbcb3db699f2908d173dbc5a478d. 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/DEH742435198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786c51bd33729c6cf441dd4af8c794b230a27a6656074f9cc57156a36fb1a96a. 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/DEH742433992.