Tristan Ann Prettyman (born May 23, 1982) is an American singer-songwriter from San Diego, California. She was signed to Virgin Records until 2013 and released her first major label album Twentythree
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 0xabb1e87345e5c15f9539a5787b5354e6fcc008402070e2388c0aedfc3a07590d. 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/c56f8e3f-c80c-4113-85d7-4c09e48871ff.json and https://artists.proofprofile.net/proofs/artist/c56f8e3f-c80c-4113-85d7-4c09e48871ff.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 0xcd0dc69952cbec31ab06b50f08dcc282dc5bb5e00727b3c0560894b98b10a1f3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USVI20500197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c93f42f8b5653b1a8c4d65db91eb9f7ce6391513b7a9bc6e58497aec28b898. 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/USVI20500198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0190af30463d5b154d4ebbc98afb597b48219f531892570c75e877f8e27c80. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USVI20500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603b369c407ca04a813d67e6ff6b5a11ea1e7216dd2c20eb6a09093b3ae5159d. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/USVI20500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dc968328c98fb330f81f8a41ecdd1392462e57f83a629e75b75427af7d7bf2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USVI20500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea2d33dd5b0251fd189a9426c23d397eb9132aa59bfc998f4bf476c0363c7ab. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USVI20500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973eef95eaac19413cbcb5bacef21f60affd0eaac99f2726c821b0613f620acd. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USVI20500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8cc0e8f88b9329c1a1e6e202610eb3f25e894c0c402993abe031ae3d7dcf01. 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/USVI20701273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d98698973d9e15a7c429ccaa4f3306b39b8b27ae6bb1a828e083aa7caed575b. 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/USVI20701274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a82185bbe6cd9a2dfd20e9a936a5866ef8948f826efc43ef6a16b3fa45193cd. 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/USVI20701280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b9c5ab55d37690b3feec28e8683c2e2cd3179b8dd81bcdc449cc74b4202599. 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/USCA21201529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06035ee9f5f0b76d7a48c0874b269530a25a1b7c3b5f8a550bc0c45c88708f9e. 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/USCA21201522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd0e73b6696836aab5bdd4d8f78285ca62c8f7f5f4317f65f7577ef5dabd098. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCA21201524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b576511fc77d8ad0f4f0de1973a477df44b6a513980823bb943a7c37736152c. 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/USCA21201525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b9aa28892cea970b08432f76f9a7a9314cbf8826f6b74aa880c9d443c73aa6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCA21201527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc85e0742ca035a0bc1f248e0ade6937cda54bc884734a856f896748d28e3e54b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USCA21201528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490653dd1b6918657bf2c715ad18b362abbd91defc6cb37049d0bd4682ee6299. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/USCA21201526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23511c8256a5411c02482067a2484d33fb1bd4d8374046cc7bae7601697eb7b3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USCA21201530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edd746dff728e7bc23f0a4587d31f3c4f1c8205a5767177a01406dead1b9fdf. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCACA1490911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1af3292711086e7cf852d7bd214c90a1ef05a946e03bd723a6a37b51c17c2c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAEP2055811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a3e3bcd8cd901dcb3fa9ec3b2ad0a56f26f6a7845c1037d92e55701e2d518. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/TCAFJ2146504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb27a1ca645a244f424e7d99f5e1a0819eec7bb04d0875a805edca025833841. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAFJ2155901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909bbcb6cc342d5fabede5993e4e6b98c8599983012b6a659d5d5c48dad7f00a. 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/QZWV32444026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4436af6ace2d9f8255c64bcb24488ed6d84b2556c69755580a3147676aa72607. 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/USCA21201517.