Mark Carpentier (born 10 February 1973) is a Belgian DJ and record producer who performs under the name Mark With a K. He produces and performs music within the hard dance music genre. He has performe
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 0x08d3ae79af5a6265e9973b95b0573e3394e47d284746806511f357aae39ac623. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bd81c41-7c17-4f96-b4c4-8ccf1b890c8c.json and https://artists.proofprofile.net/proofs/artist/1bd81c41-7c17-4f96-b4c4-8ccf1b890c8c.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 0x6f7a13e2bf0473ec04867df5c4265972da0d2ab72f29687572f087e96345c298. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BE0960900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1678b9deb1a4781659bffbd3c4d04de75d3e281407b5223add415af69c17ad. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:02:33Z), 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/BE0960900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05164c40ee19c66d596cdaa1ac37458d3140681cce07c180e244087e2c6d98ab. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BE0961100032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d9593c5f94a17575aa83ff2db0056d0e149eba91ea088543e79b0e01f155f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BE0961100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880aa01f48e23bb131ae95f13f4487d757c108f8dde5bf7109c3217c4499fb33. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:28Z), 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/BE0961200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b500cfaadd9b970f41a64dc7dd55eef64b9fa1373e66acca21476d760c7a2f. 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/BE0961100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7aca1de187e57f3598bbbec065fee4520d8ef33047d8261e93e396f679ea39. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:38Z), 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/BEB681300256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d8dee9be71fbe67ce622263e82416fa072d1a739a98a754122d8519ea97bee. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:26Z), 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/BEB681300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df4495c8d65b0926f6a8f8d473ae7e2774f98891ed581a4d44ae778f00770a7. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:09Z), 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/BEB681300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ab1e8d6c5efd43e4a8ec14de2514acf4099952c26b3f6b6cf1fdbf1546e40c. 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/BEB681300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4046e2bb6e32fb148ba563c5b70ddd9ebbe14b1a4d9dbea80591d366a0dcc6f0. 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/BEB681300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf4da8c344105554eea3f0052e726bbd74344739f14b54c628b7dbf5ea04ee3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BEB681300710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f307c1a7a63d87d6954800d00489f43082baf400a586405e268e5c330a3ac2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BEB681400442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e61f8803af568d3ce7f782f2b3c74ac654d387286471cb56ade622e02978fc. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BEB681500313.
See Me Now (For What It's Worth) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0242ca32e835d64fc10be797a59ad1289085a6e73dad9ccc35ba2241f3c9a84. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/BEB681500417.
See Me Now (For What It's Worth) (Candlelight Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ec5cb2da65f1d05558971f908f28bf3d4378f782b957866dc0afd79edc32c7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BEB681500500.
See Me Now (Da Tweekaz Remix Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a5c236ba60883064c5c9d7c1bb726be40d11e999768e05c7c73fd91f05690f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BEB681600185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641f21f1956a79e15aa7f0b66c45ec0a7560038f4d84d6344be93d4be65daa5b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BEB681800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06439360140f0c859bc003250d8217fbfb6f911b03b95e74473b043a43de66b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BEB681700386.
See Me Now (Candlelight To Original edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836ef73722237b02f032ba182dbdf81c1669f499dadf12392e745720f07c90a7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:37Z), 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/BEB681800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393283a5f3e7ef7173b08d440de41817c72de508e705195fa70d3b80788dd2ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BEB681700462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e676957ff2a8940ca14a6178a3c20be3be90d14f57eaa60e4df07bded7a3e8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BEB681800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc704cff4fae5c1bb4bb1e16d184d060fb3aab6433b58844ed5dd9b40f0f8e971. 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/BEB682100493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3970e978d8aee447745ccd9600f38067ce4d75c106213515eded7faa7bbf129. 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/BEB682200353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571ba4b017c8d1403d9b3337ab0b6f97d74c15b0705d1509508b8854ee86dd8f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BEMP82500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1886efadedc82b2b4943b332476f71d5e10709b6d8251bc5de7797e062791203. 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/BEB681800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7e6f1cf58b90ecd06c83b1b9240e2368bf53d7af079f06d6a52c02186d2d11. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BEB681700118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a19a3ef74ab8c275de6c6b8576696eac33bb65782cf8d853be5fc68ed0eba28. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BEB681600260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256b19fa3eda542f1b0bc61c2da064f50f7db4ab07cf59872b907852640009f3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BEB681700385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b3d5c9d8935bdc7c429a36f9b1641b377a64962ca74546fddcda1f39aab140. 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/BEB681800002.
See Me Now (Da Tweekaz 'Stearinlys' Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b249eb3caf0b7a9e720208b730f58f92566d9a4b95a847b1a58232495d976e0. 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/BEB681600466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe664862d59c3d239bde773b6efe4b46f877558fbd2c7f2287cb4f5622fd23a17. 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/BEZ452400906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3935851ab01dc3f90dc79f8b3aa80719b965f5d0e75c9a6a71dca459d2967c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BEB682400606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d76c39aadf57a68034b2ffaa41142f509bac41a20d0e78f77630f25efb48ce. 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/BEB682400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cacfda63ee3f7850b2f83ccf5516f78d4967d3a1ea6f0bd2dc363b948967d1. 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/BEB682300677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1886efadedc82b2b4943b332476f71d5e10709b6d8251bc5de7797e062791203. 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/BEB681800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d484b4feb8c1e954f81b9e955a3196cd09381fd4202c1b76453935e08eab72. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BEB681600380.
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 0xc8c66f813c6bf953e897760c1b753db0a0a25da75b26f523f494b32ce0b30b3d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BEB681400443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1e3c96da51627ad9e81dd6ea9e89bbb9be8c78909bef127b82b4fa030ff6fd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BEB681300001.