Ida Engberg (; born 1 July 1984) is a Swedish techno DJ and record producer. Engberg began her career when she was 13 spinning vinyl at the youth center after school. It was only a hobby but after fi
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 0x6fe58d05bfb99bbf2bdb9053fdc60e126cf42cb52e2d98ecd71d6fa95b0e955f. 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/34e0ecc0-92b3-4253-9bd9-6e662aa4abff.json and https://artists.proofprofile.net/proofs/artist/34e0ecc0-92b3-4253-9bd9-6e662aa4abff.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 0x66c8c6dfb97495e5e9f00dc7445e2ec8adbbcdd9fcd9a0ccff96618fe513c967. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLML60700103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c7978dfd8d59e35c41433f7c722187f0fcc729752495541d20a5d5ecfaa8cb. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DET750700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f2619ceba22b1dc2b33e17b6f51af9a88e3d6007ff57b0ec00969f9278fbef. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/GBYNV1100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99036b94d344b7c4a0fb7f6e5fcf0fa93662d727683a736f01637e70263b4177. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GB7NR1412301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadf351b6cbba80ca66a525723f3cab6905851e34b48b367f46be5edc0ba9671. 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/DEW871907982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf8b22bdf61f54cff91938e3c2f3d902b561449ab239845cec4ac451854ab2e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBUR62000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723f94dd8e6e2c974a8e82d0beee8600bf37d7dc6b3b3c2311f2246f84be5113. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBJX32110038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf19a82b94955af2939d926084859756f8e63ff265e7fcf2155fc82d7327572e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEU672500282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa670932c47846ed23ba5d66ab4a5a3b2828c4151457328f2bde2d2c2b89fadc9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DEU672500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bf18cadda58a69171291452d66a194154392cc497f09a0a942bd2a19d568e9. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DEU672500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a3bdd96785a6975ab6919fd3c2c7d9dde3fd4f598ea9082b4395dea73f2a65. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/GBUR62001070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab8c3de3722b25b8382095760fc2a3017d400bcde964e12a219fe4266a1cee5. 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/GBUR62001071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1127a8e4c146929b69f2394ebdbb20cc00b12642ad422e60be216a74c1a40f. 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/DEAU50970017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f284f14267a467851816763e5644a0275146de5698dfb4aa6d72e93b321dea. 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/GBEWA2205210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091320b260e2573f2f2cf68dcb3c6623c8d532f27e914fa4ed0d50e4bbc24fd6. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GBEWA2205213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9705e2e154e06e39434761a731f767ad9e44ff729aa346e333b03d91c8b393. 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/GBUR61200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f690c86ae94f3d3af899539d5d4aa24fefd64316398b24bcc1b273e7b27e2d. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBUR61200113.
Unanswered Question - Julian Jeweil Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2a2c961cad869530794fa42a6e9ab80f051733ceb2707c7f1143ee9a102d0b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBUR61200114.
Unanswered Question - Dense & Pika Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc47a902127ecf762f493d415b7802978f584d9b3c787a88bdf07c4500e4dc7e. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/GBUR61200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac48002ff1d4b58199726391cc76357eb524d1e52a0da15a4c30d1951e7f3ae. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBUR61200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b0a7c1f4245912a8355bcf6269a8843a1f478a276fc33c54d726335bea99240. 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/GBYNV1100453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d20dd9ce834bb44ca5fff04ebba169ef2763391509a6262d446b373e0b2deb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBJX32110053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28147a64bac2a2a7d1f2c9033e12524d5dbc06e815c3f8473a5e9630b24500fa. 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/GBJX32110054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4acbfb657205e7eb89d2017c20f83ea826c47f16ce912e81dd4c94cdab9cf0. 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/GBJAJ2000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf848812338cc393f52ff2ae3c30ba58d21cd8487e1a921ffc9a4784affc649ac. 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/DET750700044.