"Lost in Japan" is a song recorded by Canadian singer Shawn Mendes. It was written by Mendes, Scott Harris, Nate Mercereau and Teddy Geiger, with production handled by Mendes, Mercereau, Geiger and Lo
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 0x2c05a85252f0546685e03f7777ca9f7ea3ed627d79be84d3844c3d1d199299c4. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6552a03c-032d-4575-9066-eb3903bbbf62.json and https://artists.proofprofile.net/proofs/artist/6552a03c-032d-4575-9066-eb3903bbbf62.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 0x5b5d1d06b3d5054868178629051e006231767b6c91e7eb1d72928e5122491d23. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZNWT2272892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e3c3418225d3cdb6a28bb83374ceabafc96ef0758b1942fc7e1e9bb17b55c6. 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/QZHN92276619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa218442af5a32d0ded70d20d5d277d11f3bd14d85cd0ac0189ca586c12d7f7df. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZNWW2302569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d17a39a36233f77d19b5db998460cc06e3bfe0ee27fec6181b4690429743a4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNWT2272891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607df590689ad9d51e2efa31e6e8afe3ced2c49a02aff38cf5a31f79386ba5ba. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/QZK6F2294231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9957627fd2885be67507810f33c568292fc55080d193d004a59dd715087036. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZNWT2272893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2590f02c7a583ffc0e9ad3fa5ec05d566a770f44771c806e2ad9008b2b9b1d9b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNWW2302567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a1dc0f87399572f68eb43f4a91435961ece6c06c9cab91864727fbdbf6fc2e. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QZHN32317692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1933ff5c5a8646f5b5093dd3a87bab06b02024bbd6562589a4cb226c8fce6e3e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNWW2302568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f1a701ed6794b00136c34dc6f96b181ba98052054cb5ef5149d7beca278c1c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZHN52306219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ebc54f2ae019b270ee58db5a0b67d469c697fe807bca6c8a3bae48b919c720. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM2PV1839691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f21c25ee9ac48bfde0bbd7dd5d97a978a4c39f6bdcc300aeada4f6e9404cc45. 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/QM2PV1839692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa489e0fcdb9cbe2e0dcfeb9cf1580d3b5b4b299bd21b9b98777162d2ac0883bd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM2PV1839693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4784147afbc5b583b349452e92c30ff1d8c084b14f280833db035a0bb0c6a74a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM2PV1839695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205a803a4a8dc01d39bdec1f5f56f3b108203c07abe6ac4d5f430cfa8263b17c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM2PV1839696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4b7e1c112fbc17e47ed0a77d36c58eabdbe903e24a028a4b9b2e00a9f1970e. 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/QM2PV1839697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e638ca6a7c47a171244b91af4115de647a237e73cd6f3cfc5f5512c56f278d. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QM2PV1839694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a436b0f260e3205429617cdd71058777847bd9b502708a78b1293b1d4b3212. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM2PV1839700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e926876e0f3aa54928c224a8a54be12394e8d2eba65142ddcf9b3d4820dbf5. 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/QZMER2140757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab29d8bc03497fef7b264a2d1b09bb3baf5f474e298c221b7590ed9784974571. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEP2036929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17aa689a16ac5e03a828909f27389991a999f3e7229395857848fd76a10825dd. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/QZDA82026017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf060d637e1564f3c26a02ffcb5a2e2ffba4e7973c458672cdaaa03193f03bad8. 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/QZFYZ2179811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3439af4c872ff6482cd3fc70849be0ebd024e926ef257f1884df2df8f1a68e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN82114163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4113aaeffeb3511603755527586be88d24ae497a6edb5e3afe38fd6ceb5296. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CACSP1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552d398f3e1ce9c7769ff2c3812f737cb455cf788a7a965732aa8ea75bb3407f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CACSP1700002.