Frank Dexter (1882–1965) was a German-born American art director.Gevinson p.372 Selected filmography Damaged Goods (1937) Drums of Destiny (1937) Raw Timber (1937) Fugitive Lady (1938) My Old Ke
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 0x399bb6e31275ed24efded3f860193280087c6eaaa26796e1c5284cb822e777b3. 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/786800ec-6659-445a-90da-b2e7c1c6d465.json and https://artists.proofprofile.net/proofs/artist/786800ec-6659-445a-90da-b2e7c1c6d465.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 0x04c0d23e89f77c441fa4d7d7bd3479dda437b02a4a23a4ac99281c3e13886df0. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/CH6542363709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf14a6ff98647c597ccef5031764013b97472adc1658858d34e2ed460f75712d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CH6542425037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7036f9471ef2a8615238a5d909cc6f6aa432638da1346b000b606e1aff394c9. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CH6542425038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77458452d3a579d7b88ac3b111118247acfbb27e82e2fb8b44957719aedd6ced. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CH6542425039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa484ed950a0266a1d2f1116fde829c1eacea667443d093df85701d82b48d8bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6542403900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8381af0e0a20e4b7bf15112c01eef07fac40e8895a7252715b23d285261b2a9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6542425040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b4cac62f17fae51202664dd22cbe73c4b7b80bb89e61b29560041d1e8deb7c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CH6542425041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f562c6a7b1d7ffa2500a749394a64c80cd44355ed43f3b32b369098a873df1. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/CH6542425042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9b75cc3fe1e79ea50ea3664984041c6ed53466804d4c7eace87e440cb7702a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/CH6542425043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688621dc6e2baa72066298ff4f538a9fb6b514ccd8d225347bb4f3ec0261c8e0. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/CH6542425044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0473fbce8c573bd8cccdc701f36148f4002c2618983280657fa01f35bdf1a9c7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/CH6542425045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9861e0065cc62fd3b0eb91c98eecb0225e7b713b14428d7a0505143c951c56ad. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CH6542425046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa26fc5b56424218e18e10c503ab7181df64f3dca3301e46873b1933c6f3668. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/CH6542461216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f79de0c4a943e8c1fbf3b93cc454b798b75acb9def8192ff3a19095345421fd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH6542462557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a6d159092de20dc4fc6788cb24ebd0cde6889f5724a2168f88d1c67060d56a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH6542462558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76661a7b718108bdea6b9669f05ca11b0a443c493b020e151dcb3b0e085d745. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CH6542462559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff071e3e018581e9389a72d9185a0cbaf18c78373ffc3779c8ab3544b2dc2ecf. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/CH6542462560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa127c79179355f70756b98133cf4afc97d684400d3a76c45f3667f94cf355fd1. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/CH6542462561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213c6e34f0129e4a10979b4f3462a6ea6a9723f9c51ce46ee3da5bb4f1b7c112. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6542462562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf27b79ca82801e97e4efe29bbc9668a41b25cf15562f5d325c1c663a174c18c. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CH6542462563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4df0b4d9e1cbb9f72b2dae8b49ca39053a763d4540b75bee58c7da388769b9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6542462564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6551a356ca88a42e025272bf7a394dd95b595b44f7bfe52646c9d91fd08a8c72. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CH6542462565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a93cef87db08e85d9b283da784fa6fb42bbae1a6794fb08afc018f767631fd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CH6542462566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa26fc5b56424218e18e10c503ab7181df64f3dca3301e46873b1933c6f3668. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CH6542461216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f333f69c274a5ea3e9bf022d123eeca82cccda6631ed882a9e3475ab1a333d. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/CH6542462567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d06c2928d7b98de7ce823ab773fc286872127d4a41535dba6c6bc3380ce57ac. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CH6542515531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20686960925d2161f628c8e0432738033075b7deb810f2965c2ec5c05a800f0. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/CH6542525221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d06c2928d7b98de7ce823ab773fc286872127d4a41535dba6c6bc3380ce57ac. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/CH6542515531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed630b951efe4737a0cc9a36f1bac1e42e605b51714072174e9899bdbd6ea37d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CH6542501523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfc65c9cd8e60a4656fc09f4a55a875c34e4e623a748feb8326b468807c0560. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/CH6542561003.