Marc Smith may refer to: Marc Smith (poet) (born 1949), American creator and founder of the poetry slam movement Marc Smith (bridge) (born 1960), British bridge player, columnist, and book author Mar
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 0xc0594af6b48ad32d282bee0760ccfa47235f99457005d65cbfea027749d68787. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4f2b0ed3-5d23-4bdf-b094-451cf74c8c95.json and https://artists.proofprofile.net/proofs/artist/4f2b0ed3-5d23-4bdf-b094-451cf74c8c95.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 0x5c898ac7ad393eaf7c3523d4c2200258ec9a5236462cd000704a6598a951f6bc. 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/GBF089800319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81889a8c3e7d32448158d38dd6b41c2427ce97bb6e46dc879050362721afe7be. 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/AUXN21400238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27ea01dafdb3335363c50beb4dc5b50a89399aa002429dd1a64a184f68c5381. 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/GBKQU2475177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4686a1d6829471ecab32982f1080fa7d5f030f364aa6f2fcbd8ac0103d8e67d5. 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/GBKQU2382476.
When I'm Gone ('Notoriously Lethal' Gabba Mix)
Power In The Light / That's The Hardcore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc7a6c5a54c39f96a79364aada854ad5bcbdb45e405d504af9550a9bb8d23a73. 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/GBTWT0900489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e99e9ceccae77be0ba8bb15af287af49fc7f89a150d95fb7c3a64af8b80e918. 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/GBVVQ1027573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f5aaf7c1fa3c9a04765d977f6cdafb1f6e866211f72c8d28f4ea9479cabc93. 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/GBVVQ1027574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca7acbd26d1d8a2a91e20991b0668cf9e662c5c20f110df8528ef41b9c3e448. 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/GBVVQ1027575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf940fa8c03c301995220f7d1a49ba146fb4b4dd53af86e9f1fdef4a6c56dd15c. 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/GBVVQ1027576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575a03dcfc1e7736c74fb985fce1d39e66052cb62ec30a521344176f53169279. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:45Z), 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/GBVVQ1027577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba29a8c9648a2c0d09554379400585964bb46ddb1c36303cff378b0738e7f306. 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/GBVVQ1027578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6052a37db9df167dba0329d4e0e707efad77c79ca643cb1e6b67bc5f4706ebe. 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/GBVVQ1027579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c9711e4a1a1747d66f5d5644905718856d1d92c8de512e483b6d89f413afb6. 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/GBVVQ1027580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012e87d20f3187710e0b5152d516dc7614cf6ff1c5184468414d4e1f0802c43c. 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/GBVVQ1027582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfca8479e0ee02977bfc83bb94f894efe793d6053ccc7533e36cf101cf434550. 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/GBVVQ1027584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9763c0aa80dffe5ebbf84d4c3354b706b85848fce24d38a40e880df27d88bcee. 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/GBVVQ1027586.
I Will Have That Power 2006 - The Stunned Guys Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4215f71d7657c4da2d13301853491fb494bc955974ba2b6adbfeb09645750c20. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBVVQ1027589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ead737fc8587ef8f052826356f904d50adc0f32d09cc93affa613543f891ec. 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/GBVVQ1027603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65575b6dcc1d0de6256c5a06ecb46f9b4505b162b5d59b30acb2c03330f20d2c. 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/GBVVQ1027604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79842a1b255ab35eaf19d6b5904d60c97c02f7d60ef1ac46d1dda57f83f24e44. 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/GBVVQ1027605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c42b3f305ce82f4add8012bc1e7e1071722e9e77497e9259f4a1b651159f901. 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/AUXN21400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d389f4dc8eaf591db367b37ce73c74f35d59fc6a1fd49bf8a3dd31d0f6f14ca. 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/AUXN21400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252e4e3fe86b1b005693b39716639161c6231591435594afd2ea70b47cdb46b1. 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/AUXN21400424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779d032aedd46a48098a6d619a56a1abe8bbda60bca0f5fb7bab4096deb14189. 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/AUXN21400429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7f57d14fea195ac79699cc9dcbd4c26541f70cd1d6d39d29e04bec81c210ec. 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/UKT6B2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11ce8a032c591532890656676ebf4e15322555bff39e8b8601221ce1b04188a. 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/GBKQU1145320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996a41d86a78b89609dceb63873afaf1ff148b837f54b395381ccdeaae770bac. 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/GBKQU1525272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850bc06f9b6f1b20657da59e79c709743d5b3a5656577e6ac39b7850de96414. 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/GBKQU1145341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c0be5a9ea0d41f8d40a11f858765493c9eb7cfb7e80959e514e4a4c9d3d4e0. 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/GBKQU1145318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d434ae5e0f5c666ddaa69029df057347dcd0a76530937642707bedabb6d7c7. 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/GBKQU1145337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d75fff38a262b0bba42d7f9314fde8d1953dde029c576a1e776e0e2b9cfae0f. 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/GBKQU1525274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebef027ffe41fa85280a8e82d4c5305c8b1935b2d23025cc5f744511752c4532. 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/GBKQU1143899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53c7d536907d34859e4ff953d0cf3bb7986f4e8e2815264fb45fdb6cde569bb. 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/GBKQU1145324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91fe11f1fa6a2d502919aff694e48e4519563f32a2a3d7faaf33372104f9174. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUXN21400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47654da486bd78a3d8242e3c9ac6e07824e8be1a9448fd983364d0c14a766fd. 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/AUXN21400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a213a0935fcb11a72a8a8215f7c9da58f9ab13e4a5663bfc4bf1a2d6d7d67f0. 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/GBBEU9800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedde94f1267c1e5708c7c8b9c795d610257463a1357c234e50b7702ed65cf354. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBBEU9800108.