Mark Fowler is a fictional character in the BBC soap opera EastEnders. Mark, an original regular character when the series started in February 1985, became a semi-regular after his original actor Davi
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 0x243fe947e515a9399c29c450bce2aefd52c0ce70d3b3836a6438e8b7873a7a2b. 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/01830952-f9ed-4736-af8e-ee7375d3db37.json and https://artists.proofprofile.net/proofs/artist/01830952-f9ed-4736-af8e-ee7375d3db37.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 0xfcda75fc243386bf43a33c491245ad47431daade46a10d4d3b999f795fe84741. 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/USE830910583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d580bd6c757409aa0707d01c8c964bf19c9d37c91a184131cf665317632e9ac. 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/USE830910577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dd8139239fee76cf6ce555d630e3e3a3d1c12d16fbd9d5148b7f4795f5602a. 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/USE830936353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42aaad28717d3c4f970cfd4627f05691610446b4987e24f41348207651abd82. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USE830936356.
Beautiful Lie / Men Are Still Good (From "Batman v Superman")
Piano Suite, Pt. 1 (From "Interstellar")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110d2d8f4dd09a179445918167fc3f7efc4cb19b0e8f6d292c7bfeb57a32a3b2. 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/USE830996887.
Piano Suite, Pt. 2 (From "Interstellar")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7d0ab8e05ad1ad49b5b5379146acf98e82586a271b8cefdd177669946d4982. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USE830996888.
Arrival To Earth & Scorponok - Transformers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28003b8c295e583ec9bbb2ae9b456a360002f0b08a8ce72fd493ba4a8d6cec8e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USE830904842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a834650257469831b67d2a129c60173ce2bac1340c273a7431f8d13ab9ad60. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/USE830904865.
Statues - Harry Potter and the Deathly Hallows: Part 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffb738b6483029de39a552e2294f253fb7c5799231377d0ca4af087272fa84b. 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/USE830904870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90a00844bb7b6b68789f6fbdbfdcf528e91d6bfc5163f2ba8d9557f7c43ace7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USE830906762.
The Epic Collection - Two Steps from Hell
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860d31ae9803b0fac81effae05c8903a85f678a1775c435306e621fa41ad70ef. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USE830905092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eac3299d7534d7ee1172795d463245792f5a2173859d07d4f5f91a5bf114008. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZGWW1915088.