Tamaryn Sitha Brown is a New Zealand songwriter and singer based in Los Angeles. Since 2008, Tamaryn has released four studio albums, an EP and several singles. Her multifaceted style melds various ge
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 0xec6e5caa2118eb7850d84773a4889b74533789721060b2f0742a411e5d85037f. 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/8f4b7ed4-8c1f-452a-827a-761fa2c9ae32.json and https://artists.proofprofile.net/proofs/artist/8f4b7ed4-8c1f-452a-827a-761fa2c9ae32.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 0xeb31dc95a7a4b6b86bc49590dc9b7ad51f0affb439295f1628d72fbe588c1336. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USMEX1000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf197215027a76725149bf81ca111bb3060d7fac6c069c11783a9308d6e61ceec. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USMEX1000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55860d2b47540139ce75d3ebf82762163fa4af770c7d73412487e940839a7e7. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USMEX1000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11e82e2a307043ae960813a6327ee6a4f9d22ad0cbbeef11355cc50aa7926941. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/USMEX1000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c1521905ea529ef763f73d859c6100270ea46288765b33cffe39c818d375cc. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T05:20:29Z), 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/USMEX1000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e465837c2272e64c9fa64427741736c8f2e6a7664c0d16487af75fb650987eb. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/QMV8L1212513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6142220aa69183e044c4ad1fcac2c11f4a6d78720705defe0b2e0ec3f2010114. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/QMV8L1212514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c38cceb3282368ba517d3c15e32beda3e822bc92e5a9373a3598761cf4e6e05. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMV8L1212515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c1295e06de5482b306383df102f0163b2d8a7126526bb4056c8ce411d745d3. 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/QMV8L1212516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219462b15bc5f5cc6f09d932ea1546258c8c51ce916d940c4258dc734eee8525. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/AUBEC1842225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b26d6545b836324e5cc88a44496681b760fcfe128a7547350588c203c5ee5d. 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/AUBEC1842166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d87e949cc7a62fba158675ee026dca640dca0fba69a73e3b259f0e51b0a19e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/AUBEC1842277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae9c073a1d5a150a2140aa4d919139c042bebc85fb79f98ed4e0d60d657a08b. 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/AUBEC1842284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03b9185d4ba206c017f1a0b82c4b1a6e64807b7118c643a60e6f1813fe27850. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/AUBEC1842295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722c66ffc60ec51a05e3cc12afee60fa08fc48e06d377875a44337db63a73370. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/AUBEC1919707.