Lucky Twice were a Swedish pop music duo consisting of Hannah Reynold (born July 18, 1991) and Emelie Schytz (born October 28, 1991). They were signed to Family Tree Music in Sweden. History Their
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 0xb6c718e7d834e48195cc02eb804bdbce28cda8ac2d900927be101d21f1e74bd0. 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/67cd25fd-30d0-4847-a447-fb68ff15a435.json and https://artists.proofprofile.net/proofs/artist/67cd25fd-30d0-4847-a447-fb68ff15a435.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 0x4262ca04fece414ea43cc2f4151dbfa245f8a034e025c34583221f8b460e9dc9. 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/SEBGA2400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acc88ff2d1da4e0eaf321bf86977d72b6a5eb7f2ec6f2bffd4c028187962f3c. 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/SEBGA2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e8fc10e4828f0efa1d5bb9025685e1de9a1ffb9c51c21a25644fed13069982. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEBGA2304479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae6d143a6dadff6a7911d852002a6b473b86ee5d27994ddf5dda7707c4fe401. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEWBD0701701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb94dfe909ea38b00a921ffd2748ddccd03e0865ceedcf78dbe94decd3187cb4. 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/SEWBD0601701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f1c0c59850e53d49fb6dc2758e9d9c798eb53980167d1a47c47d86eaaa4577. 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/SEWBD0701702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bd7af81738e89480407ad6149050640795e6625edd4bd84a585d8f46821396. 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/SEWBD0701703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a7cfa734cb40e410cf4203e6c7d452ea20f2aacc0751e4d9a30a44508902c7. 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/SEWBD0701704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6fb3cfd408c9d5be9c185fba866f096396e042c273deff0424a566c266be565. 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/SEWBD0701705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cde4eb484845be8b36416513b63b87717888ba7c645fa7a0eb50f2486dadb7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEWBD0701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cd1a1967ddcf1fbea4e89af09e79b61beb2cde68964771141157687aef1074. 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/SEWBD0701708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1ec8f7c6154c9d5bd4bb1fb027018d129a15c69c35962d63dc3c9f656e09ec. 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/SEWBD0701710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e6bf2e6b359dd98858a5428b0602ecb3eab1b632faf17ca9064704e0dec513. 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/SEWBD0701711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86f57d46c2e9aad9209141590b2b97c5cbb0aa6f99ba5e2fa4f0a1db3dfdeab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SEWBD0601720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c473430811b38164d6f042e227f30d1ab41a53c8bce42925b747dec4ce18aa. 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/SEWBD0701707.
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 0x44b4310840804c0339d917ff8fd5d665842f60c6b8b78196a08369f770416e9b. 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/SEWBD0701709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c6902679888907c7304deae02762e6318ae4d818b6708f3a290bbde76ba84a. 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/GX89G2549037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2612ebca9b63b382bcf28b2978b8f4d62287e5d51a2c758a0349c7a382e07549. 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/SEBGA2200117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0102361cb81f2e12d0ee1b59c3c8005d75289b33c09c64459b4eda9d874a2a. 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/DEE862200140.