Sylvaine is the solo music project of Norwegian metal multi-instrumentalist Kathrine Shepard. The project began in Oslo in 2013 and has released four albums to date. In 2019, Shepard became the first
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 0xf8a2a0c2b3ad94adc153fd05e17d5bdad0688d9d59b3ff5bfc65618ea3057c0b. 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/a3f53628-eca3-48e8-919e-f49de1d670a2.json and https://artists.proofprofile.net/proofs/artist/a3f53628-eca3-48e8-919e-f49de1d670a2.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 0xb81b374f3bf62c89f88dad56d7ff038ce752b4497de5cca10d4b59a02b7ca8cb. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZNWQ2181143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58501cb49fbf83bc3336d398d7b27c701b7cecfbcd4dee24f40f29ed790a888a. 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/QZNWQ2181144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17e735a783aac6ff9eab77aa21b3094808547217ab537d16113403d70a59204. 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/QZNWQ2181145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187865140cc492017077d7cf1e4bf4eb65235dbaf433b71499af9fa31bfbe63. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR33T1638501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09e02cafdac68347bfa7e5ea0d5776f1127e1d12542d20df6435a20e990cf0e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR33T1638504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6da0efb3bde1b257dc2f5082d7c5f61fbf9731c2bd06a232f1f1141ce7f0912. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR33T1638505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb768ad4e354ee9894b4beb54d79b2043ddefb7e6cd9269f2e2b41ec6266f0a1f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR33T1638506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881f5d439716391d037fa7759fc1d4f24f86396edb2bf9926b634e9ddfd28725. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR33T1638507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2960ec8a1969158d1f7ca443fb0b863793f3f6f79d951dba53bb08e20bf254ca. 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/FR33T1638508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550e824b6ed86f4b12befb62be892fdccd1ca7ac1261733e5470acb07055abc4. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FR33T2164703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af4e950722ef1e0106d0a0ffd254c8b7b4ebcf5bf6851400d98b37d96ee8c52. 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/FR33T2164707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e48a00015245d3e9b698f596d5e60b26d4bf1bbbab519b34de1323e5fe0dd. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FR33T2378601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e48a00015245d3e9b698f596d5e60b26d4bf1bbbab519b34de1323e5fe0dd. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/FR33T2378601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e28f10ac1c39970270fd759273e2ec02f3472a8299dba7e2011700c41a8927. 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/FR33T2378602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164bc439da1489453913da897d57d24a9d6efd78dd91c2039ea0ee61b6c7fb53. 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/FR33T2378603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fa582cbae7468b83c78c6b40b442a469b12f9a1efab126a3c6e8df3674977e. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR33T2378604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119dcbd23c315775c9b76822e6da9bcebe207b89681ebc7da54ed297c832601b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR33T2378605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e100b446f4c5db7c291a027a849d3b0c2bf0ffece9a079842469c077dec75cc. 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/FR33T2378606.
Silent Chamber, Noisy Heart (Remastered 2024)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1bdaf7451f2a8a9bf28c231f235a320f5b95d78b52eaaffd08ca2b8e94263f. 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/DEPI82440229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dd1052a5b6d84e6b4ab8d28a6dcf5634384f58304cbe2fe1b4e396090cfd70. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEPI82440879.
Silent Chamber, Noisy Heart - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe212f0153dfb03461da7c302af671cc7151135d63293fa077e3c051181fcdf5. 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/DEPI82440880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb363d10f8b2b9668c04d5ddeefed27266ca14f0c9ca36eede67e314dc0ecc6af. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEPI82440881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb062c718051fa455d2a79da24d099e87d1fb6a0d54f1c1cf9ca26a30a4220b4c. 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/DEPI82440882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785e5b67e001dfa916192e5659069be87bfd3e958a64696c002b5df24d408e57. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEPI82440883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4b693f4ef4978a1bd64bd7208c6805b37d9c5382e7795b2ffa53c973e8ac32. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEPI82440884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309f59455df2c1ee464c82680bf88a7b1323f48eeff34ff3b0fa5cf125bcec76. 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/DEPI82440885.
I Drink in Every Sob Like Wine - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0126049246db16072c98cc2a7da837dbb8899691ad1a6f6d16f7b90ad601b714. 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/DEPI82440886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9571ab6460c8ee9a73df54d01e23785f9377a3acd294553fd5da7f28b5287ec. 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/DEPI82440887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bef89a90c9d628a35f591d36a4e5395b2a931cf8f5d6b1e605ad2302e237ffb. 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/DEPI82440888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35da10d57715c9a65719bfcb72c37cee43f82255ccdf585a1564454178dab46f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QM4TW2461016.