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 0x9c265ce00b6519e5d276a4a6b2c08598cfb3b7c80d46766e789df04493613f6b. 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/f4c08dff-116d-4a3c-971c-d8eaf7fa17ec.json and https://artists.proofprofile.net/proofs/artist/f4c08dff-116d-4a3c-971c-d8eaf7fa17ec.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 0x876fb843dc23cd42b107ddb6ce77cf0ed2de5e6156fecf7c74bbabaf08e668ef. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBSMU2936969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e467557518186b929a9dd68ce8f2a1803488327bef2b7b14ad4549e81bd7559. 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/GBSMU3125928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e37cca15f36090d09c0188fcc4e669d927e45d005b4ba39794b9d3f1ae5930. 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/GBSMU5543056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8973f3dae9393e8f68f68a9c4583bc97b229a64d97ee36bdb73591ddaf00935. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/SE6A91988631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a840607176f29086ffa370b8514579a6c0218590f5499dadaf99ece70d3ce3f. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/SE6I31970936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5910778b084f6a5b59f287d1dfb49a0601850b296c8369c575cb21f80df0ef0a. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:08:59Z), 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/SE5BU2090740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe815b3ea1ef97e73ef9e579c754a7bbd4f918109b3d4eedc4100cd9c0514aa9b. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:49:18Z), 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/SE6HN2055723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb41133dcd8aaa99b71feb118e8209e8298ef0b3b4645ba7616016a447fdaad. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NOAGW2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8af115e93cb940b9ad6ca4b15fea99836e6ca879c67f9eff48b30d96759bac7f. 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/NOAGW2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939603b7f9249570af7ec67319082af2ead77fdf4dee7a5fbd499d36cdaff3ae. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/NOK5P2201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53477edb3e82da50baaf7500e76ec175475f0c82b835161514810ecaa2e74bd3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/NOW7B2202052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e09f221650071a102f7f925b60928c1cbe786b44ea734be349e9e138b31f69e. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:33:53Z), 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/NOAGW2200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9434e9587c3d2d218d4fb215882ae1f7c4eabe48cd2b9a7117d2515418cff5bb. 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/NOK5P2301010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf515476415b57379228f39011ec96cb5e8347b72f0de6dc8b2356100bd69951d. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/NLT2H2401540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05462d72e04bd1399c69c758b46ab440578bed76eb678cdf4116920330086a1a. 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/QZWFJ2397993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1f369e9a48e9c6196a7a5cdb4065bf3b825d5db4c648216edd44297f8432fb. 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/US38Y2405085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844971cdd0dc5ddfb4c76c1ef0bb4a3dd8877d503eb817037cd5fa77d5499abe. 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/NO72F1505010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95991649bc80586d70c34d72c526fd57583dabe299665b7cd73100920af3083c. 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/NO72F1505021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f789e68f5dc1eacb6040831948fd3b874272653ea6a9effebff38ff24d21fa. 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/SEWLR2435901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548f816edf1c27520f94926c0062684145919ce7d3da7f492591d2699ab70bd4. 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/NLT2H2401112.
Laika Party - Eurovision 2025 - Ireland / Karaoke
Eurovision Song Contest Basel 2025 (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc793c39b879be5b4d1cfa8a45d3fa5e0dec5643dad6dc358ce5b8072b36b0e31. 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/DK2DY2500098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66724cc06ff315117a71728409641af6786b1b01dac61829820985f9c902a5ee. 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/NLT2H2401554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa438e666b5ba7c88e2a0cff894dfde24b8346ba3be1da76ebe53f5e2d251f104. 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/NLT2H2401536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb643cef635679c98668cbc82f1cc1f4ced7a4f16cfea9dea5f659cc0fc3825. 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/NLT2H2401538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e1f91e6176d33db6d7d64178bea403dde54c8b26281d995c6c98aa34ab065. 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/NLT2H2401427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d004a6683c472d2c656d79ca1772b40dadae9a2c222c396cfcf100c8e5932b2. 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/NLT2H2401303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471d92da40e47052967f578f1f05369c6fcf984f261c4ae1b4483fe38fa5e23d. 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/NLT2H2401205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb09f9520b37ea01cc53a51ebc3454c08cb3cb14217f44d797e5ec5de79e79b. 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/NLT2H2401090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c89ea792dec17e57b55c3aee5061654f120c6a6d7fa165e61951a86a62b366. 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/DEN062400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516671a4850aa653978f7a69b90423879a6673c3520636a169510dd05481adcb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEWLR2420901.
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