Astrid Anna Emilia Lindgren (; ; 14 November 1907 – 28 January 2002) was a Swedish writer of fiction and screenplays. She is most notable for several children's book series, featuring Pippi Longstocki
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 0x2f615c5e36ee786afc17357b7b8d2cec46491559daab8d99fc888ed5e84a6631. 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/0be2193e-ecfd-4653-a3fd-beae78f1a5eb.json and https://artists.proofprofile.net/proofs/artist/0be2193e-ecfd-4653-a3fd-beae78f1a5eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Astrid Lindgren - Wir Kinder aus Bullerbü
Børnesange 2021 - Musik for børn og barnlige sjæle
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 0x0f7d68f66eaaa88591997a612a64fb97eb90896ec094b8dfff6f30bc3307d80c. 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/SEUM72000601.
Hyss är bra - Emil i Lönneberga (Svenska artister tolkar Georg Riedel och Astrid Lindgren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a78dd780ba54dae9c82b86cd0acfb9b42a66c2c21a77a1904a492f46df1e1a. 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/SEUM72300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86adfb89b2e6252e1201c5e687f4401522d55c5812d52dfc3794bf5340bccdec. 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/SEUM72300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8411a22bca3bb2044ff399017de8710a6090f089f32dbb9c218719a5a012a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72300571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025fc1a6253ebaec41ae8880b9887277a2690e93d31b56caa27b6e015479c4ac. 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/SEUM72300572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6110d49e3e6ebefcecfb058d28217f57e89c6b320c44381e33654fcf356d5f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72300573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9817324a0b8168818fd3a936ead69d2526592cf5c82d32b121558db085c0c343. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72300574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc3e214fe3ab2769aec1e475b19da536f524dc4e009249ca45488f3f1e25ac7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72300577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de18bd8561db1095ae09b2cb12446ad8b1852cdba9085716cb11dcc23422c77. 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/SEUM72300578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389d04e1c09a0e71f0a70a8354e640444f507dc02a63da2ab869114a869fae7f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72300579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653685921d6c426f3a765952e9385ae696cc6eaf123d5795bc88f7ad9b32dbdd. 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/SEUM72300580.
Liten visa om huruledes livet är kort liksom kärleken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171db7f1a96588b541f3e6c6f7ba911026fd96a01b2cb5e3db8d2b473c886f9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72300581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3264957ae75c09706a435b7bafcf0b0c1c6778a32331b46c3f724bcf3c0679c6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72300582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f0e99c6bed4ec0fc380fc34e5b7001a9147a75537aef34c66568152b695a8e. 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/SEUM72300583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f4cea5cc37e4c16c8f5e7f41e1ec3f68630e16f582217b09eaeb338626ee5f. 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/SEUM72000655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96046acf73277cad33720af4fcc2195b50a158f871db4233e2e4f4b0379df394. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72000656.
Improvisationer över Fattig bonddräng (Arr. Håkan Martinsson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2533061618acfeacc1aaf746f90a6379b5325c666b861d7254e48fb00f839e6. 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/QM6P41466352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a75c928591c1b2d31611026b3b2a8b51097b213b177b4d30941eb96c34b22f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72200736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb5e67d2e0f5fc4f0d41c28e5f5d97b070bde354f7ab253b834cabae64be5f4. 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/SEUM72200731.