Long arm or The Long Arm can refer to: The Long Arm (film), a 1956 British film The Long Arm (TV series), an Australian TV series Yuri Dolgorukiy (c. 1099–1157), the first Rurikid prince to rule i
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 0xa6200afec4218ce22dfb8172717c074a519fed35a6e82c54505c5e23d7c9ebd5. 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/544d5387-b12d-42a2-96d0-45f68f0cdbb0.json and https://artists.proofprofile.net/proofs/artist/544d5387-b12d-42a2-96d0-45f68f0cdbb0.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 0xc8395d4d03ec554dcf03e436abf4e8d93aa20f3344f1c2adc014f3d6ba300a95. 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/DEQ121011858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b2dda1a273eee9810786204549149acef57dfcf1021ecbac81ba2c032971bd. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:43Z), 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/DEQ121011864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f70f374844aded3132ee153e342e6aea0d831274e1f22edf274aa86c7342de2. 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/DEQ121216929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6604bb7505100e4d0db62ca0cdfabc9aada7b502f9e730a701d08d967ffbd. 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/DEQ121216930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e8a70c36e5a6a739bf030ff7b07b0ca7d5330db42c31ef256f2b0c0c232939. 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/DEQ121216931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190e2366ed641bb03d97e32da5b281b1e395560e1ec03d871b887e190c7c24ae. 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/DEQ121216949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8e6ac7206c810d7dd49c7c2b1bb241eabd269e57f9854b9e22bbef34982385. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEQ121532014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69c5972ca161d5745e260fb1c89a1b61f8a86dcd99dc9f115f430d836a435b8. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:46:34Z), 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/DEQ121532015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0128b57eedc26f5f28957cada25632ef8e287a272c33f619264a3a29eaa23607. 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/DEQ121637882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbbcd8af7b1a1d44892664a68ecd46e162ca9c49446bee65f1b11d29034af3f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEQ121637883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476dd36f3c94e0974b17abea69d755a0bcf457c6e137f0eb78187d4f4f0d3485. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/DEQ021911713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3351d27e8b11118f040eac41c8596fbc8856ecc73d0ae3055425da6028d59702. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEQ021911715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55cc7eb6758b73f949ed404df30589619357358c6614dec7fae8100c4cb60a7. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:33Z), 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/TWAE32501802.