Mike Seeger (August 15, 1933August 7, 2009) was an American folk musician and folklorist. He was a distinctive singer and an accomplished musician who mainly played autoharp, banjo, fiddle, dulcimer,
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 0x2c3ac77f72c496c02881c977d101d878659a74f1140351dd856fff3c655359a1. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/264ed156-a362-4662-8821-62c36cd22770.json and https://artists.proofprofile.net/proofs/artist/264ed156-a362-4662-8821-62c36cd22770.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 0x25b0acd4f851e4970d97bf3ccc4d202193589330c731fa7135ad84cf7d6bdd77. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USSF16232515.
Tipple, Loom & Rail: Songs of the Industrialization of the South
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ceb7fd6947552797fe5a1bc110a49ac7c7bb4bd927be7a16f3f97b46fca7038. 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/USSF10313601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08089232d63e315ed968d2f7249cdd3902788344c8c9506f01918177e3c9674. 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/USAD49900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08f9b702e8f50e26ce832febc1c745a15bae3c8489f91e09c7481ba52ce0bb9. 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/USAD49900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f4ca9a8ccdf828fbf29e690b74b977ab7c9d557e7a47d6b0f9e7eb1af84b16. 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/USAD49900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefc899d1846437205e5897ccf61509502aa4bb8f7df2b9918c1d57cd2e11170. 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/USAD49900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ef5a9a169435ed949f24373127194b5f11be9b05d4f288cd8c6f928191a40e. 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/USAD49900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e264d32dfb35a1535f96f9d8a9eaeccc69307a40c4860211fd64d763628f12. 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/USAD49900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e33152bfeb60ebbb17c2d5d2b1a95ed3ca44ccc446940b93298dd98241216f8. 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/USAD49900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8902c1e56487cd1be649b354a0d925a038deedd863fa5bc0d1165740d0f502. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USAD49900001.
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 0x7b6d20cb967db155c8d1b2313ee00042d4b219aa727dcedabc0557a572fc4f8e. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/USAD49900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0008c027159e8619e34515fdf45f7c333a11fda7eab852a6bfd976277b6996b1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USAD49900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74023749aa46eede2cfe27762bf628ad706b99a6e14b457f7468a1d1c2d6166e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USAD49900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7df98d972a2ca22d9ad433c613a204195d46263947f86a3e5663a37872fac6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USAD49900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5930996f9cde2b4025088aedaa157323da244d818b4ad9d483688453d28514. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USAD49900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89edadf9c645a3dba1a3356138514b2d99e723267263e1a47faf49b1f91f8c3b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USAD49900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028cb40b594f8dff64d08c1ed005f3e6734e16da122892ab7660f8ad46e85450. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/USAD49900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2eaa8103f04148c94456aa1f9864f6585e13341ee6712d5f89eff3f6eacf57. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USAD49900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeccf52019e16af590c7bbc9774981abcdedb84183e7c074ad5c8265c9bf5497. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USAD49900016.
Classic Old-Time Music from Smithsonian Folkways
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e074005d248827ecd3aedb7fd1e12a90efceb1d08f18849fe5a51d393b0ba81. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USSF10309315.