Sibille Attar (born 27 November 1981 in Örebro, Sweden) is a Swedish singer and songwriter and producer of French origin. She released her self produced EP The Flower's Bed on the Stranded record labe
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 0xed75b53eb1df8d6f6b3e25287c51903c729ac4f12ef94ae38e13747ceccdc6eb. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b6e98c3-1a1a-4d40-9ad0-e2faad3d5694.json and https://artists.proofprofile.net/proofs/artist/3b6e98c3-1a1a-4d40-9ad0-e2faad3d5694.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 0x5287dc8254cb8bdaf32d3fff28843a3d2caf25677319a5778735db6a2fe2ca0e. 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/SE5XG2383703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a729e5fa222c56c702cd164856c10889455a87875f9eee782407f40265fbb18. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5XG2383704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3bd31067190dacb225a88d0a19ebc9665cf579dc2077c0ef5238da8f56296f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5XG2383705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20db35c5c4e92dcf5ab68eb0987cd67bfb77e49e3f6aeb3298577d4579183b53. 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/SE5XG2383701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d243f34856d6b0a2aa9cc436e7a1a986b4ed6f2cb2ab405d045730d1003498f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5XG2383706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a108d6eec5d7f361ba2a295335917768e66bfa47970c8f5b975154c84d0ec7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5XG2383702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0323d5252c2260b7733c043beada5ad523d19819efa295522abcf93ca3db507. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SE5XG2383707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b55b44e49e82d0463f1ea6c0fa1e05f55ffea0044637338280fb82e050ddc5a. 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/SE5XG2373009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c93084b0a547c9e6bbdf085352751e632bda57e582ed68026210fb65d5783d. 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/SE5XG2383708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16397d06e05a4b98f86634e133fb4510214bdecdee21445846ecc1f644cac970. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5XG2383709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa074abcfcc821e0cc10055dc2cb0422e7baf2166e00dc2d84f6359fbb97882bd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SEUM71201502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b755d0d9a2312929d43cd32b140697b23ea08cabaacd4ca85087799fdd274e. 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/SEUM71200523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb176f1a448a08e419aa79c2a7a9d39decddce5928a9919a7c2d1b28b993927db. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/SEUM71201504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed142ccfdcfbbecc24bc9925a9ccf62865fa0b4fa85347d158d69fbede4e1ca2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEUM71200524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3268f64a0a53b7c5e8351bd2c72f9a7a22e354dabf1cfe2bb9e4e88e76b26f27. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/SEUM71200525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104b9ef106f7e09608fe01a3b90751767877ef2a772bf0fd6b9243219e7c277d. 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/SEUM71201727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b55b44e49e82d0463f1ea6c0fa1e05f55ffea0044637338280fb82e050ddc5a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE5XG2373009.