MPV or mpv may refer to: Vehicles Road Multi-purpose vehicle, a car class ("minivan" in North America) Compact MPV, a medium-sized MPV Mini MPV, a small MPV Mazda MPV or Ɛ̃fini MPV, a minivan mode
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 0xd4a9faaac0b0f9d4cb3699bc7a92df04c3b196181250ebb9ef653a40ef96c1d8. 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/8612715f-929a-4599-97f5-e7c30db10d4d.json and https://artists.proofprofile.net/proofs/artist/8612715f-929a-4599-97f5-e7c30db10d4d.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 0x55e6e77e41ee450472907bac8e8413f592e0c8c1de11aea810f9f5edb9b00bda. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/UKXN22447833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb066974df305bf3660ba1af2a9666b10cba2b42e22e4304f618a99ed7840bada. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM7282435682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3de201db7febcb088b504e53138eb0c82bc6e38110c169de5f528627bf368ad. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBLFP2437915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef83466c6028a169f2cb89e94778c5eed38dd6ad1f2e91bd4c688354c4e12ab4. 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/UKXN22352258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79f399bf44d748a5abe22f16958b3cc95fa8998810575f2aeee8c7639d9e66a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GX3Q92349288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cf376c3c56fc5bf03c10a6770aa153e95a40caf499781150a61e73ac631f51. 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/US7VG2506826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3570511855e54aac944314e161fe4c05521ab42979011b0fb8a842bbe6c145e9. 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/QMFME2475388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb011a2d0e58e61d9e233d4cb58b775698339e88b3f0d68d6efc2731113ddfb4e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZW9L2455425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b399dbc9df27c0a7f831a2e92191ac0dcab0012303ddb6ab5b9d9ebddc5dab. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ES71G2426429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65107fc50fc6eba55511fcc44f9ad0507cb0a121774e883becbcd3bf92cb5820. 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/QMDA72436551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8350fc3780e9909cc1228cce40d506f90471d81c57ab917741093ccb3b040849. 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/ES71G2418165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff6e0114742cc4ba8d2a657f42d4fcf5367b6679f4369c27b3b8d448fe0353b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ES71G2417886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e236bdd0a3c9db6ab00a1bb8331a41d4ae598e68a5fad7064a087ddefaf64c. 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/QM6N22461676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b0d2271ecd62bf47a5b5a13c0bf016dd8bc478f3f01bac5ba7513cade52939. 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/UKXN22406118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba79985e763760fbcfc166aaa6f6b575406d86c433a3028c983ed29c31896875. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/GX3Q92479594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd70013a32ae6ac109c94f6ec30a8706bea35a14b8bd2ecfb8bc76c3ce1d6fc. 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/QM6MZ2427979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30fdf33ed59141ac6bc12cfe0158c9a436593dfdd34d50192b1e99236d85c5. 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/GX3Q92404752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b6d78946485967c5a293091b69e1ff0b777d5fde4bebd370f6a4cd7c3d1d1b. 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/QM4TX2419067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c820ebee7b9feaf4892eac51ee4b468807ed362ec349ac1d11e707882b7589. 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/ES5022400376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e347de3cc4dc73adc0aaad06d6a43f706aa3d3c51d9d9917e216651109a4972. 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/ES5022400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5a9aa76a0c822f6ac2d283e0a3aa8bc94d1606cd0491792b201ceb99f6e52c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBMA22330760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c08c972b1a48a48d0d4f76fa52c5b832a52277d9afbc3828d4e99b11ab6a012. 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/GBMA22304927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93ad843f09ff67b3a99ddf364188900c0813d7602ba242c47b9c4b087292794. 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/QMFME2374145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb971a03ee12c2794f5c2b740d5a7023c5e752096891867f431ea8c3241755b6. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBLFP2384891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0a4221871fb6b250ae438ef2558883bfcdc561e9f7292ffa33542b01e3fcb. 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/GBLFP2331136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337d38562db33cd2715b447dd49a6e5bc2a06d24b9ef27385c76d838018fa186. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM6P42312746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04396b3c007fdc679c32d1946e93b51ddc57cfd2fcb61f0cabe56737c0c02f2e. 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/QM6P42319671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b29bc80807776088739d8407a033350afec7a149f0295cac6c27f210f6bc35d. 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/QM6P42312651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff387431e02bef044b6141045ec8c7c847a3020e12c3dfe22e68d5aa292e4e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM6P42312593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e5c25c910775a49f7c6ac005e5ffcf4f90225b15aceb22cd9ba8dc7cf23b82. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/GBLFP2317355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ff387431e02bef044b6141045ec8c7c847a3020e12c3dfe22e68d5aa292e4e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QM6P42312593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3763d778867f7b9f91d1ea335cb8b15017344d079794d839bb8120b19b4dddf. 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/GBLFP2304122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9aa60f0d266604981ac77759c92889600df47fe7911470a409125fead2cf8c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GX3Q92393754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde183d4820e4159f919831b2d91e840c5e0304e6e1eee423908d5c550d201e17. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GX3Q92352994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1461d0461ec39b4d54b52fca205e8bfa0a8a9f6247cedd366f735f2c36bdfab. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/GX3Q92349287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2a17bc369fdbd5c4fc45e914b3590fb7f6ccfe39cb0fa0b2c130c7ba599c37. 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/QM4TW2355448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a72b5700ea5a6bf90945aceeafcca2f6c1468b5d7f41e2fc0f8155de733d9. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMDA72270797.