MZ may refer to: Arts and entertainment MZ, a French rap band formed by members of Les Sages Poètes de la Rue MZ (formerly Machine Zone), developer of Game of War: Fire Age and other mobile video g
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 0xbee7820a0ba81e3441a8cdae29c188866e67e8476df71dd97187fab639934a15. 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/187d5518-947e-4f0a-8e19-60fd6d617d37.json and https://artists.proofprofile.net/proofs/artist/187d5518-947e-4f0a-8e19-60fd6d617d37.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 0xdb1fc4a1ab7359a6cb2dbfb77388902c95f0181bd5fe92c8d92598f6113e914f. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/FR9W11305525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81072df07213af35c77fb24244ba47795b1fa9bd03fd678413e1812f5ae52e93. 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/FR9W11305523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3bba13c6cbce8c57d84f348c25ba8e4af9c84a94db09b226255faea84f4e1b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FR9W11305521.
Jok pololo & roch colombani (feat. Rochdi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2144d31fd300b43425d60727c0bf0ccb14b108408c8b54e78db641535b2c86. 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/FR9W11305519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cf4daa317dd569c93afdbe8f80b2f0257f8a09590057ab4d30d4656afb24d7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/FR9W11305518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e1073d231a60635895bd4905eab7622cec60569da933a141776f900d4feba1. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:37Z), 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/FR9W11305517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f106118c962f2a07acb5cd706eeaa9c5769d4ec057a570bd763e32bf72e0eb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W11305516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a688efc5ef4c7c5669790fd1aaac496cb2adc5f3144c7db22ee47b50163ba4f. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FR9W11305514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacadd6a22057516912ffa029b9a26bfb010fbb565ab1378f28a4516c895878d4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR1A91300980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108e3a09a78e984f71356e4859e549417651497cde6fd1685cf73f4258997708. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR1A91300975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26e726f022db43a52e48c20f4c1e654ff0a03e1af607b899d2e5ea72d959b00. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/FR1A91300976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b7a093abb4e24f05e16337b2b4aba006cdc47a30c03f766e9837747a17505c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:19Z), 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/FR1A91300972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399aaa0197ee78c04093e8d7c3dcc4e84c818d40d124c3ffe14bf8c1512cc99e. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/FR1A91300978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42819c4abcc4d1b384aa89cb67c510e8f90cbd64e24c6277b85f637303780574. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FRA191300977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fc9d0678ebd772d2ebc75fc4dcf9c5e418f1cfb463263152429c98bb286f5e. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/FR1A91300979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb746dab0592ebd9c12a3b016df484061e3f0f6d043b0c768e033445bbbcb965e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FR1A91500267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b5c4594505e0fc8f2f43826f2e03b255c650fce641c77c7f07cc154599b136. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR9W11504201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca75e88f02048003305629b655075f8e8eea04920c5f5bdf5b4af9857309bef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W11504299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4302e3976effc09ea68168b9349afca7da19ecb92186a1a3ee3c4827fa54d9a2. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/FR1A91600154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fa858780e7ab48741f02621e1193faac1cca94b505bfa9df5f20df03517195. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR1A91600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5af129a1268dd95a36b4d924ebb3ad7a1f43a1920ec22fc79330c6288931888. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11600585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba5eff42e5a5bef150f1658a2c7438659ba1111e6037355f9ec30bb161be4e2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR9W11601488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dd830df46029f70a14bfcae489e772d3b7d9f260962fb5c4220c886cfa9f79. 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/FR9W11600584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94af49ec1f52d14274f61890ba1e280ae2a3c24b014d7c0c661f2f21ebce01ea. 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/FR9W11601490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6a3081235fe5f9e1980acb8df97fdbf49f0d625ad593f19fdf3413cb29c688. 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/FR9W11600586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b0b3b677bc33c3722ccc99ba0666f510070c654b2ec5c859e46bd447e01d48. 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/FR9W11601479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71fd99f47727ac78564193c3af5487bbbf64af09e18e8d88ac1a3fa93ae8f826. 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/FR9W11601486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba5eff42e5a5bef150f1658a2c7438659ba1111e6037355f9ec30bb161be4e2. 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/FR9W11601488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae01ef4310686d2bbfcc8998bcf7ba2898f25d0668d904ab90dc99b1b03aa28f. 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/FR9W11601480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01561d48fc0a61eaa949c4409aceb67f8637e928b203d32879eee871908f04f. 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/FR9W11601487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5af129a1268dd95a36b4d924ebb3ad7a1f43a1920ec22fc79330c6288931888. 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/FR9W11600585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cfc78939bb040d4d808169c8e979901ce2b4bbecbf10ec3d171aab5cd09a9f. 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/FR9W11601517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91bd99d272e51c1b04e725c29c2b2353ba9fcf0b2c061ed0ccab24238bfc10a. 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/FR9W11601489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e6bac918de890cafcdda5d8a626c5eb324bfc0dead7c5ffa21a3730faf6b03. 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/FR9W11601518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd932ea4866f9ab361aa55b155af248c5d93a45392ba27c016b4c446f70d00978. 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/FR9W11601519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805ae3be9b9fb65d12689162ff22146783232d58254f3a3be8b6ea0ca84057bf. 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/FR9W11601516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478a6d87b9f2c106eeb769da127f30209e061503fe8acb47a41f1a60bb326543. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11622491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a241c095c02df6609ff7645363cdb7c76439cb15375487235bcda96709d0b93. 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/FR7U61400938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20eeb7c0a280c7c868f458d0c300161bcfb4c9ee0303c866e15b6ddb95c5548b. 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/FRX851700814.