CMH may refer to: The IATA code for John Glenn Columbus International Airport in Columbus, Ohio The National Rail station code for Cwmbach railway station in Rhondda Cynon Taf, Wales CMH Records
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 0x1d506c02f1926a5ffebece15f0201d516eb4cd9e0b457b0054985d27936d6896. 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/751e8213-1272-443f-af2c-8d8e67446f8e.json and https://artists.proofprofile.net/proofs/artist/751e8213-1272-443f-af2c-8d8e67446f8e.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 0x51fe22b3112c6157e13a370ae196e43beae597dec95a05134659f10a8ca2f324. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR96X1843854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6815b22b233e1f0a31249ffcc2c8ef54f816edf3b83ddc49511ad70d2f740272. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/FR96X1852746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3dfe6c438a0bf57a4eb3f7dac0409df7bd719deace48928a798b7280355c9b. 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/FR96X1852747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d3466580c376e208f82e354ebf63f4e6e2884f18e694beab87b97a24da28c5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR96X1852749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8d7b75882ff5b4ce687d6f555b6275f4597619548759cd1b68060d5e10cec4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/FR96X1852751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa283c134e234b7a41b2e57c5ee683804c7fd4d52c111f0d118fd6a9c8c298c. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/FR96X1852752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x964ca6e0797ed0288d792368114c72af5c631e588471261873ca936b3fb159f0. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FR96X1852753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73974b308a178080c88ac7a5110536ab3282274e9a761752f5c407f10f2cec5c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR96X1852745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6815b22b233e1f0a31249ffcc2c8ef54f816edf3b83ddc49511ad70d2f740272. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/FR96X1852746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3dfe6c438a0bf57a4eb3f7dac0409df7bd719deace48928a798b7280355c9b. 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/FR96X1852747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe273fe9cd79be5982577b0f7ffce6b1ddb5dd3c41f2a2f4fd75208847ea585d3. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/FR96X1852748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf024e61e985e510611c9c388b80056a927e99c87278bcfd2e4c4bd0411c3ca07. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X1852750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8d7b75882ff5b4ce687d6f555b6275f4597619548759cd1b68060d5e10cec4. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FR96X1852751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa283c134e234b7a41b2e57c5ee683804c7fd4d52c111f0d118fd6a9c8c298c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR96X1852752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33109c62507f1bc2954b5ce42f716b822a78f6abd9399eb47178ad89f017d0d8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR96X1852754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b17f073936345eccc0e2ea998c2de61b1988cd5edd5a36af32a20453ef662e6. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR96X1852755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd7e0032591413cbfa8d95056e1048c037236b9a97e15fdc1dba1b37ec4c9dc. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/FR96X1852756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b38c895561184bf533e01a5ff26f4cf3595e8766fa0aced38ab7c1cb1c0b286. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FR96X1852757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef58bbfd68ff133e86820d75eaad6cda1c82f59f9b4c9e929789ca14bc465b0. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX201800924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e6722d6d4197bb60f1c03f1698f6e6ce7cd3dcac3ec2e5bd5a2b62bb6518c. 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/RUA011900363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccb6a4191ee31b61ee5b06418cb5305e815cfc21f0889ad8daf99aad4b1d171. 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/RUA011900365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a937feebb74cb3b0b90c4cfe43ac8446797551891f59a235fe0df7d18dc2ad. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA011900368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449b9c35f333dd814fb58263b2d86e870bc1535fb899112ea1efed009ca9ebad. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/RUA011900369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8860285a9e96ce9f48a567cca5b07c1125b3f651de1a092aa529dd261c679d8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA011900370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62ee6bc38fb84cfbd4e235fb0253b1c851e82ef640ae07d7a7930e0bbaf5585. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/RUA011900371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e2d0b433489ce3012b5c3fce972609243d011b15ee698d5689d4eb1bcebc47. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA011900372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b67ac43dfbf12098665204782d7a7768aaef4c2745ed87ec93465a710078f8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA011900869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a4ae48ce505e277065674fcdd400eefd5892ae069143d872287174d68a4ab2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA012000763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fb7e59061b50fc0464dc6e6f7c3a2e134bfb66fbd59edab2ed146eee27b3be. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUA012000971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66b67974ad9325df5ed3809f545e81536ad867f6c00e10323f81633a7e3543e. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/RUA012000975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d1fe766fd5cf882cf7f616f7aee05ff1c28731727b079bf4ad75892f459c50. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/RUA012000976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91de21fbae5d262d982d6d21bfa51a3eea638b060f2c6ca23d177d6fac99159. 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/RUA012000988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab5f17e3b6381a1994d1bc2d2f5139425a071f30c23f07443e7f38d78f21132. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RUA012000978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc79707358c892deabbd162ab9e1e68902bc9b915ac5591eab17a44bd7ddec9. 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/RUA012000979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418a9373fb20411fda55a9a03a492cd8ed2fbd3aed4a3620d2bcc78dfc7c353b. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/RUA012000982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00e86c5d2598fc61aa26eef6db47d2dd43c551ed567abeb1454eaf0280f8945. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/RUA012000984.