Paul Maxwell (born Maxim Popovich; 12 November 192119 December 1991) was a Canadian actor who worked mostly in British cinema and television, in which he was usually cast as American characters. In te
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 0xf65c0d4611677e1fa3d08c3a64e4859480aa347436b0b1d4cffacc597d7690f1. 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/1f39c914-4cd8-4fcb-8cb3-98fccd5196d7.json and https://artists.proofprofile.net/proofs/artist/1f39c914-4cd8-4fcb-8cb3-98fccd5196d7.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 0x569836f72cd54d2d5e4cd662c0c2b4ec1d6f5a7991585b9ab93ef3072c155990. 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/QZDA71868819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc207a5f8a3837248029f4d7f54bcff5bc4cb58f7c484225a3426c52c7c2b0c03. 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/QZANL1770449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64d99f6db637def19558528cbf67fb3ab801136175499d4d90f1483514ae1fd. 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/QZ93L2020199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2934193fd101baf720981ecbae09a4283ac8806777ba37acae2dc5274c9bb4f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6G2197940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf497695b6f78da9d0ac03c63e00d9ba1866d48e202a8274a170a528696e90076. 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/QZ93L2020201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19840d4077006b12cbc59cc57211c51fee30595cfb1ff69593dbc3dcbca6445d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ93L2020204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fad526150e09472e70ac1bc33383d754587b55799202c0e6d25b786e0625df. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6G2197941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56bb386d3212df3fb69f93ad7a7e5b30f67c2b409a9547102b3efc8f7b11f2d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZ93L2020202.
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 0x2f2eea2794f07373383f523d0083bd56f7aa6c7f9c565ba9f9e778f780c6975a. 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/QZ93L2020207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc127c87ec4422b25e58e44b252461a8e494f5893afd4982ca556196babe74e69. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZNWU2184716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56eb219aec8216ac9370efc57f17e3e35e5715c04266efc8874d895add899b7. 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/QZNWU2184717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedf6e00bf7317d02f1e3af709d8bc13e81537c4160f0a071d35b92c92e39dce. 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/QZNWU2184718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f35e1f11907955e5e8099dea20173e27256baaa6d092f4191612cb1dbbb42c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZNWU2184719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c864983e95c9713c002a6c8dbd14aaf8a5e1260f1496be04938dd85578a1aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ93L2021191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca25f74381dfb7e04e3442fb25c335362d7f047db77fefced679ffa9c9fec2eb. 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/QZ93L2021192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4607a52921dba57e0f23e560128244c640a954136be4f0a57e4e5633249a0ce7. 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/USUM72305993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e8818f9f6edc12d3fe0cf092faeff8dae9b572dafce063fc0dda0f885e822aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USUM72305995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f633ddf5bcbb1b2dd23ee7de9e6998a1c83daeba0f4a5079ae511fff88ccb4. 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/USUM72305996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c309e40db99da65029c935fcf09b6d240b8e98fa50b83ba381440cedc6fd87. 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/USUM72305994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1850d604a35ab5d5ea5c4b795d5f85f2477599a8f362e5c8281060ce90daee. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USUM72305992.