Karin Margareta Glenmark (8 April 1952 – 30 October 2025) was a Swedish pop and rock singer.Discogs: Karin Glenmark. Retrieved 29 May 2010 She was the niece to Bruno Glenmark and sister to Anders Glen
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 0x90bce08d1195b8501b5be8d7a532454f288a9317a11185a78b2ec1aa6f00501e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/42909e59-cc84-4c24-abd8-45a502f56182.json and https://artists.proofprofile.net/proofs/artist/42909e59-cc84-4c24-abd8-45a502f56182.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 0x30985fc6edbcb88dea2a1145f762f01e70ae0e58663896f67a430dd034af8231. 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/SEAMA8455140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82244e7ec36aa2a16635f470d61db808124e020a60bd4bbd319c4b721f765b3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEAUA9800216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb477c67365651333ab4fc4ed637c5b77b777a4d8ce208050f9c4c5e99337256b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEAUA9800208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c3861a316f363e4ae46fe7ec15abf3fdbd597e2e3a95aaa281c3f036d0b1f0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SEAUA9800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c108aec751ad4e63b9030540b58b9aa4758773f357963492c599380a015f89. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SEAUA9800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e09252fe6481ad9320415e9a59de87ef9d1156c0e378ba60515a1f14776cc57. 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/SEAUA9400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa49acde2c0dd87f236654d92eedacab06fc960ed712372d48f01d81779e271f. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/SEAUA9400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c5c1f24197cb3bc1c91d40768e00ac44eab35aefdfb31eb5a5b5bdb8d7d895. 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/SEAUA9400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba880659788a32f25dd6dee482c9f28aead5de8f50ed60f8cea04cab8f2592. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEAUA9800214.
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 0x915540a1abbe8ad50c3180dab6b77b9689d18d8fba9c5600a21afa6ce47f07c1. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/SEAUA9800202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed93d643c70c04fd3fd7ba3e60ef4e85265ce5bbd0157b3999ab79a8e16696e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SEAUA9800213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60627838091d2abc170bc3b0bf9c7692ac74fab7e2eaa1f3aae22ba996c981d. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/SEAUA9800215.
Quartet (A Model of Decorum and Tranquillity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa342c63c8c53181eb6a4e014e6e7d64fde568ce4528e7140db087f66161d49dd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEAUA9400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f1995498260aa7c3bf7fbbcf011daee643ea1d4fe96767259b71b2cdc52e63. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/SEAUA9400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef70c2bea73f10124b8434fa64d78b2e90316a0e8d9ed721048300e621c61399. 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/SEAUA9400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d8c4b938e94de079aea07367d076706f9410c26979151bf3eb40ecaae3a025. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/SEAUA9400116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7471c09e930dc8d65dd94197c2ca0d6c83846659446657348fa64e1b773342. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/SEAUA9400117.