Jeff Parker may refer to: Jeff Parker (comics) (born 1966), comic book cartoonist Jeff Parker (editorial cartoonist) Jeff Parker (ice hockey) (1964–2017) Jeff Parker (musician) (born 1967), guita
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 0x9460ae7e016b429831d39c3ec900c12e9f33bf292411e29d1cfa31e80539d825. 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/ae301b40-b3d6-4d11-af36-07664d855cec.json and https://artists.proofprofile.net/proofs/artist/ae301b40-b3d6-4d11-af36-07664d855cec.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 0x52dc09880ef5a252bb8b1815dc0304201d188d27498ea37bce903a19cf264916. 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/USQX92203976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd782ec7f06295b197702df0199ef811a23d2dfe72d6ff7c1b2e0b44082f62a2. 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/BC7772300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd782ec7f06295b197702df0199ef811a23d2dfe72d6ff7c1b2e0b44082f62a2. 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/BC7772300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6496c07bf37dcc9e915bff2f906ee5e761e008cabe293011d0a2463570f3c37. 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/USSUB2033113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359ee3145d3720f191d57c18d28f5ba0ab65b2a8ab01d16c45aae7c7d503f8f8. 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/US8JA2164001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d670a2bb0f9625b61d8fa08ee6980730878f9681fc95fada1398cdbe5450018. 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/US8JA2164002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c248f8c327a734cb03d85695f15ffa90ba62d81dce21aa28754ab6bb05b2e4. 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/US8JA2092001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa591c70026faa14291fedf54cff7607e8e8e3250ce032e62213da06875c170ad. 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/US8JA2164011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042fd58fbfdb4ed26ae6f043ee8f0ba028499ad2ea37ef0bdbbb6ec0b218e20d. 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/USA560592344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f04e9f8e4c7816ef4fd94df6ef32802a81952e3f43fad2b36db85920bd916ff. 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/QM84B1822017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cd2c5d1fa16f51002631f3a1fc9adfe4685a5d82f92b35c92f1c6ebfbeebcf. 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/QM84B1822018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f99f413cdf453a45f37ff1267dcfbd7fd2eb6ad1fb99d7dd5ce5073f933d55. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QM84B1822019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca886bf56b2ab0e970128346377f20f4b7f830659acf60f804542d3ee86d08b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QM84B1822020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd45eb3600571fb6fc42fda4984ccf6f914c5b6fd1e7988c108ccd7bcfd8017. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM84B1822021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc539785f014bebb5d087ad73502b8d2a76048d7587b5e7badf4b39bb8473622d. 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/QM84B1822022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa43fdd92b819058a1a6add1827933d46fc6260a75fc81a735f20c3158091c2. 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/GBEQT2100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9869d2501e35c1fa435af1d0b06f94fa36be46fd2a741df1df4fb9e475e4042a. 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/JPPO02204039.