FM or Fm may refer to: Technology and computing Adobe FrameMaker, document processing software .fm, country-code top-level domain of the Federated States of Micronesia FM Towns, Fujitsu personal
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 0x528206c59bf832f35732e27de1c69f2931c86b18da38b715cab36c0a5b1f432c. Chain 2 (Bitcoin): anchored in block 953765 (2026-06-15T08:55:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bed74b14-11bd-48f8-b6fa-42df45fd91ae.json and https://artists.proofprofile.net/proofs/artist/bed74b14-11bd-48f8-b6fa-42df45fd91ae.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 0x1cfc7b06b3b44781314306ea4220a76c1cc0436fcdfff3d4167b2f35bfd5faa1. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/KRD581800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba51f6bf9e468de837c26f71cfc80e11164001c467aaa87172296436f3126bbc. 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/KRD581800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1e0087001479ebb1df191c0f7689171938993bd0338914a358c3e3ca685dea. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/KRD581800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a1224ae8eb40677fe2a72e849923b32f66a71eea326e6c069125a90b19c099. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/KRD581800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39e9e4e9483014650ffdef35b715e5f5ab211435aa89df604f943b34c6273f4. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/KRD581800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe645120ba83649969ce6e2811b0c3fa1fd5de35f18d712a85bda3d2313201509. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/KRD581800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5796ef462cf7a481129b8c99c03970856df1060b48bcf74442baaae2fd9726. 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/KRD581800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c46079fc5cae4a30f9d4ec805af1ff8b85ab13e0358aa36522f1bf03a6dbffb. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/KRD581800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b520bc37ab3ea45275bf62912ae982840b18faac9096f475c8fec4e4b6e6e8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/KRD581800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8150482368751d4aa2c7e4d1a05daf7f4b919c9ec9392fb71281d21c2fd054f9. 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/KRD581800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5e0944275fb5732527381cf330470f8eb07ff76673c9f032a7723b04bb4321. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/KRD581800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264a297d872007f42a64272f631c51c3f797a3fed49117045a4aa0c14fa62579. 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/KRD581800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d268a71230e6dabe34ab16209c4a81c055530b5c65b5629e22a0786f7ee8329. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/KRD581800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc972eea93d9a7c3a5a05f119e51e7823a995ac89e0872313146c804f2a459da. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/KRD581800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649931037384a6aba099f60d7485afa4cf0eb8aed21e23c75eb4e0e8f39cbf1e. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/KRD581800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb8e56ffce4201af6469a22deb2b4282952824f41e939b71992557ca3a6012c. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/KRD581800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049c22309630df8e9a7f53be80976f34ec9d258a9644b228d3b790c39894760a. 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/KRD581800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab75cef77f0ebaca4700ff10c3d26c5415efd53fd074e3aae9b00c5512ea5096. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/KRD581800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f318b034c20e11574d5c8cdc56e103d50211815897fdc63191545fb396cd20. 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/KRD581800022.