BM or bm may refer to: Arts and entertainment Music BM (rapper), born Matthew Kim, a Korean-American rapper BM (singer), a Congolese-born, British singer-songwriter, dancer, director and record
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 0x6ae41981fff1d8f36e85741ec9df85c7da7a9c29a39a9d106f77e9402461cbdc. 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/f450ba5c-7948-4da8-916a-870a81c33ccf.json and https://artists.proofprofile.net/proofs/artist/f450ba5c-7948-4da8-916a-870a81c33ccf.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 0xf873d672d710f47d03a504f78c54759ca4c1d0bdb43a2afd775551fbe4d93428. 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/TCAEM1970523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f82253b6d59f48c8dd8c95371d3ce95cd9dcbd6cca8f9b6c035e49fb76d95c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TCAEM1970614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e16753db61a23e107c427f7320da5d3c33c388b7f14356b3e90b0cb978e4811. 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/TCAEM1970531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ab298fca5f788f2f478eadcf27ba0505bb9c769df769e659c23eec99297012. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEM1970546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a293a0e88d31ec08ef8c1c77e6f13ae41c9fe712cf87d2cc288fbc05b0dfc. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAEM1970613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf350eef910c52f8df91cdbbca7b2ae495799332b1742c9d0d4b02e5abc1d67e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAEM1970611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cfc0846cacd63c9d87c89bc2d34cf53ea59eb70b3ce5624c58ee130af3a9fc. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAHP2396986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb94e61840ef0610a15988638ec033888c069c33ee68b88a10a6000f792d10c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAHP2397023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc25b3c8bb32a5d0e68495dd13ce2b85843785028a3fac25624f73c509b34b88. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAHP2397041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3965dcd9a34e7db3caa460c4dfdc37171287d461302204a9dd449316463895. 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/TCAHP2397047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5952d714cee1ab46160f7c9b84b9dc2094c78e5c20403a5585919015bf03778a. 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/TCAHP2397062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89e9fafe8e1d614ae3885a87d284a4410814c8be6455af4d0255bea9598636d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAHP2366022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54df5c4829514cb08782679c7de3f71a60dee5711cb40b53628984289bb1e9b. 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/TCAHP2366027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f22857742a5989ee2709e0be34d6a87bc8f01d2a08d24636594ae0b71a44462. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DGA0Q2374084.