thumb|Deupree performing in 2010 Taylor Deupree (born April 30, 1971), is an American electronic musician, photographer, graphic designer and mastering engineer. He is most known for the founding of t
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 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 0xefbbd6e8eb1fbcf4d4f48853fd7a6d61ddf6795ac0bf386a97b8f21dfe6cfe84. 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/e130f983-e52c-4370-998b-ec41c9593c3a.json and https://artists.proofprofile.net/proofs/artist/e130f983-e52c-4370-998b-ec41c9593c3a.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 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 0xfc78263ec1d8c466f8ca1f3b73413b9f2ed6ab0bccb6dec853a7bcac2817ea68. 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/US23K1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26afcd24641f0568310187f8b038952a2a4bc07df959847e64ec3ffb21f62524. 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/QZHN82207162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9527612dc3e3a19e58ef123b75c4c96f153e658b98b51293cb81cafa3dfa4afd. 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/QZHN82207163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0517c10408dba6b274303557853283729adf5ee9bfb6e316ecae8f10276dd8f5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN82207164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a2f7280dba624c5aa2f6e72e6f0d47ae2cf8f2f7ec427dfc2de7413f229aa5. 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/QZHN82207166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0d1749df13251d67ff1917f627b37b46049da6b982d348fcc3de14229eef8c. 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/QZHN82207167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964a09ca03fcc38b4129f11753ae2494c8e78d6029d6a147d4569c718a7b993d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN82207168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171a2d4450a652d5bddcd946decb85dc52cfc07849231fbbd6e718346d5e5c43. 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/DEX262100339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb5248002e8286456334ebcb7f9514cb2ab0d6cb685e6d81513ba649fa784b4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEX262100342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc37004eba9c00f141d57148323dd000f49d9e3da4d5fcbafb599ef57bc41ae3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB641800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfd440e5ddb654d4fb303ef8416ce635727f0b533c398cdad157b0fe901fc11. 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/US23K1600055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6588aa83eeb8c47c761a2e73d358704abc3020151272340108d6c5823862d3. 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/DEX262500405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4587ff35b671ccd4fe17a34d9b6b935542ff4b271bade65fbe05721948e2d1f3. 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/DEX262500403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4587ff35b671ccd4fe17a34d9b6b935542ff4b271bade65fbe05721948e2d1f3. 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/DEX262500403.