Natalie MacMaster (born June 13, 1972) is a Canadian fiddler from Troy, Inverness County, Nova Scotia, who plays Cape Breton fiddle music. She has toured with the Chieftains, Faith Hill, Carlos Santa
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 0x7f167322e9c5cd3e06ff573548533f0be5443f41c9c916a510fed4c3485fd325. 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/d606da54-4caa-4946-ba96-1ed11ae0a9ca.json and https://artists.proofprofile.net/proofs/artist/d606da54-4caa-4946-ba96-1ed11ae0a9ca.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 0x1ab85c38cd6e2ce7d53b898401137d258d0809920c436a3be9f8dd2e917788f9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CAL351900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497e47f71c2ddfc3de2d97e87b8b705acbad2af6df8dece76b9f9e12cf1d9346. 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/CAL351900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab85c38cd6e2ce7d53b898401137d258d0809920c436a3be9f8dd2e917788f9. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/CAL351900129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497e47f71c2ddfc3de2d97e87b8b705acbad2af6df8dece76b9f9e12cf1d9346. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/CAL351900130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13980a8abea8d53f4cbb27d29546b953a174ffaa33fec339c6bc0d54955327c5. 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/CAL351600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13980a8abea8d53f4cbb27d29546b953a174ffaa33fec339c6bc0d54955327c5. 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/CAL351600351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa3d0eb5a2c986150b0be8576ac65b54ac78ad548285a5490aa461f83e2b9af. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/CAW119901674.
Traditional Music From Cape Breton Island
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e01c32244ff774f0548bc7c7cfd008e48132a47eeaa4dbf8e42fa229b67c481. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAME90600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f47a64790a492b2059ad7797053241c3ed9b11f8e73bb1971c993e9110463. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/CAME90600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ade287b430e3dd2724b80a1a1c211760e87fc8c03681913fd351b3160abd5b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/CAME90600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623b10623b39714dcbc934eb2e81e428e1719594ee478e910d94a96947b93e07. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/CAME90600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f47a64790a492b2059ad7797053241c3ed9b11f8e73bb1971c993e9110463. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/CAME90600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ade287b430e3dd2724b80a1a1c211760e87fc8c03681913fd351b3160abd5b. 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/CAME90600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36eff3b0aa70feb7be0aec988ab28686b8d2cea0d04cccdab56360fedd1699d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAME90600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae3bec8bd4753d2a370f29116d4278691035102c00c3974c663ba048d7e5539. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CAME90600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623b10623b39714dcbc934eb2e81e428e1719594ee478e910d94a96947b93e07. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CAME90600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32353f448def82b53d6846c24dc50588e5b0bc76ac690787a51e6a4a96ddc602. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/CAL351900214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8022a463aac7b5da3851ab0e324aa03d80d780203da368840fda92dc3db3e166. 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/CAL352200061.
Minnie & Alex's Favourites: March of the Cameron Men / O'er the Moor Among the Heather / The Fir Tree / Willie Fraser's Strathspey / Dan R MacDonald's Favourite / Devaney's Goat / Mrs. Norman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc966219fab8eb99239f083a0e8a69a6f45735cf877986a07597ae317062bb422. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/CAIM51800003.
A Christmas Jig / Mouth of the Tobique Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb091b089696b8bc76e5c805dc6ab3e3888e14b94e041230a3b9336c592572. 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/USSM10802804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1ac64ab0c888de520757714c377b75a4932abc4b963d225bc158994a445fc3. 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/USSM10802792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45408f0a27d07587756653b6e7855573d2b65c159f62c01f1875bc4d861b9f37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USRO29902510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed048a4ee93960b32069f8abcd8b48b0774bb0cbea3374c0378ac055a1becd60. 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/USBC19801030.