ViVii is a Swedish indie-pop trio, self-described as a "music project based in Stockholm". ViVii is composed of married couple Emil and Caroline Jonsson, alongside Anders Eckborn. “Siv (You and I),”
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 0x7e4633cc45f3ea4eb81b4f79bef4ac8d36e96b514f99d4ec212f22749fae6503. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/52c39531-95fc-4ece-8135-3032d362d600.json and https://artists.proofprofile.net/proofs/artist/52c39531-95fc-4ece-8135-3032d362d600.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 0x71c0d18a805f7c542ce8935330dc2caa8b4c3ed65d6c6f12d996fd1a1b730d99. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/SE22E1800602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e171118ffbe176a4d447c8aef03afd92db03c0762d0f81f3b59fbe4cbc1772. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GBX721800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237bb743313a225311b3f9170bcfd97328729a65e04e84df2626cd1be6d97ee8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE22E1800301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f5496283ca8885209739c8a4ffa1b26240f649fe86f6b846ea877ebaf02497. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SE22E1801302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c28cc96307fc1ed3bbbe6f116355d5f32a19cbcd28622e5067441f4018b2b6. 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/SE22E1801304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbe40d3e49f7a9470c3f975021e4b03e55d74d4596bdf04df690dc26d2c4ac7. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SE22E1801305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839e92cd17545d1085934434d9750c0f3ca63b5c62172c12b7b4db0c55862892. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SE22E2001501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4f4cd249220ca7e6537dcf816e003aba72990a923cc619320212b52d44f88c. 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/SE22E2001601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d16f5931179d25d1b4347e3090ce66c74a2466b50bc8dca80f0f315c5312d75. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SE22E2100702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7017bf4477576dd8d74c75dd4649ef5c1f08ec16c19d9f6460db9a32353a2a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE22E2100703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eac32d97651ff0bbdb7259b19abadcdbba9ef196a6654f04f7b224e649a7a0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE22E2100601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd20f3ef73e2f02c5905da623d10b4349a127a42a33336c1a47dc56848dcf85f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE22E2200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613aa4f4b4647a98f7a6d4f36e1cc7bdc7d69b5205a6972132ccdea28cc3e13f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE22E2200802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa20d7f85beceafbe3452fb936a1d5e84ee46467c99e72dda87d3828397d9e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/SE22E2201201.