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 0x6dd5daabec7f2b3a17a3c9388f21f884ed9a0f673be3a218b8cf3869fb6c779e. 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/985d104d-5c74-45b8-820e-8d64ae61b13d.json and https://artists.proofprofile.net/proofs/artist/985d104d-5c74-45b8-820e-8d64ae61b13d.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 0x65a56fead1a631102181620c9d8a08de79fc1ff2279c0b6eea72a162de0e61ea. 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/FIBAR2100312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14775727f321cda7d434062837375a6a46f932aecc28d95c73fbb7c7d68bf8d8. 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/FIBAR2100313.
Kitara Vaasa (feat. william & Victor Nordis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8df2fee7535ecf5b4b72410a32043e0d97ea9cd04064733a544db7fff3b492. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIBAR2100314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9dbb683b7e3cf09ac45884bb021d6a120fec8adb0fcea8b5c9f0c7bbf713653. 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/FIBAR2100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc9161f9edf213f868685396ccfdd23276f25fefec8fc9c1c901e41429e2e65. 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/FIBAR2100316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb768d3cf90427d78bfcb9dbd1a5482a41dc9ad2ebda74345513572129fcdf. 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/FIBAR2100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d1937aa271fe741e91cfd99d7efbe50391e6c4e0a7a08c3f09a3e480f011c0. 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/FIBAR2100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc04300fdd1cb8f8dafcc8f6b0dff50f8eba1ca744e82bc1c10bbf3086b043e6. 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/FIBAR2100319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaab356f1d681b2a19b2d84e92470e523992d267d565289db3b6da308a24b18. 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/FIBAR2100320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80c0c66a78dd0dbada6828f53e7c6c76c22a1ca09d4f8b77577f896192afb8d. 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/FIBAR2100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18501360f150aa6a973a6b4547a89bae5f52190135219d9ea190376c1c1bb4db. 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/FIBAR2100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc837aae9b6b6871b0ad9f0dadb9de971da1519d321fed399efa0f130aa8522c4. 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/FIBAR2100322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36204fbcfab56c811b95aec9baa70f3a8b07d6573be60b70a8d67fea57008af1. 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/FIBAR2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a5f72aadeffbb8d5002890d5c72ded0b67dc2f389e0a0c2a0ff99d30c1228c. 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/FIBAR2100158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e3c2f3461337d7e1185a6b4a11d9681bc99dc87cf28296603d49734da12a36. 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/FIBAR2100323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98031507d9a03df5aa8f0f679f275f8ea81f79d89888abd72a0fb091e9718b9. 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/FIBAR2100324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b546abd7e2449d0f96c2caaac2e8125bd8dcbf45d5eaf97e0d0d94b017a8bf. 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/QZPLR2308612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b98591d2eccf7a167c23308ea52ee3bf05f11d75418cadb1fc9cb17ab0834d7. 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/QZTBA2445854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe324bdd88a026264f2a4312512cec7f305de08ab36a504bd6023dd01d71623f8. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZWFM2372563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba917ffc964bf8a4279ba8bcd65b9abb898769bf7431270ba1810e41c4f1c83f. 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/FIWMA2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d9f8619b7431eca5ea5a9abc841977fbb4f9d302d9db5af0b2d06516d1248b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIWMA2200264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2940253ff1b43939a52bc3e559cc6facec5dec784ee551a02cf81128a97ffeb3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FIWMA2200265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93496a3788e7ffbd13934941a59ad002a7b9e5ae4880281c0cf5f4b1176946b. 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/FIWMA2200222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80ad5bfc694d435fa2845f2f4d9261a763541349e3888c82235b6ad887824bd. 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/FIWMA2200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4313f5f4a7bb0bba3bf858aa1b540e4580401a95f7bac564d247baffbcef3cf. 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/FIWMA2200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356cb870fe684f13d44e42e0a517e7e4dc75f7ad14772e66eb2b362f2c294661. 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/FIWMA2200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901659189f188d12b35ee277b027a6a6774c727beab6fd8ee5d888933cea3ee9. 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/FIWMA2200269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02d99e25ddd5b3c4c6f0f3f2e95b943b7fd13b645facf3f7e265abbe3789677. 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/NOJDP1601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea4eb563b847f402928b980dbda8914647a177670ade00bfe5e2e7b1afd7cdb. 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/QZMEM2392714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff4c2f114c1f4c10ca4e29d6d5a65f0b7ed2b4f3c0aa8d764eefa9cd0c58540. 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/QZMEM2392715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c295fa513e8ff1189e008276be440d4b144e352f5066ffaba0594eada03b6d0. 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/FITXD2300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e76f2a23f6d7b8612e919ab16cbe3d440dfeddc670251352afd4d4d57943928. 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/FITXD2200138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51601e1869cf31ee37e851f897600e2884d5bc982648ea848711fae6fd2dbbc. 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/FITXD2200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c6d753ceb85e54e41bd079a3dd0fcace208ae986f151fec08531179a025cb0. 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/FITXD2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddaf81d82d7878accad09b1eb97607addaa30d29722f2a31fd3cbf1f82840a4. 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/FIABY1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177a2dd1a2a8a7c1715c4e6b90c0e40916bb42160aa4010c947d84fee1ca191f. 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/QZDA52556009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6694b931354c30e0b60f659f9dffda963f91b58006544ef316611cbe4dbe00. 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/QZZ7K2434464.