Brothers in Arms may refer to: Literature Brothers in Arms (Bujold novel), a novel by Lois McMaster Bujold Brothers in Arms (Dragonlance novel), a Raistlin Chronicles novel by Margaret Weis and D
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fca90ca85109484abeb0f414992d2ed754d66aeb6cfb66fc433ce4e7c1493a0. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e450f521-e321-468c-8673-5af078acb252.json and https://artists.proofprofile.net/proofs/artist/e450f521-e321-468c-8673-5af078acb252.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e6461fa687a602fa57c47827ae487e278505679b8b89bf2a1c76deadabfe86. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZNWX2113840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bf94a7b6f522bea66d2f3499b554e1286474773846d9d165f47228c665c342. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZHNA2226175.
Blest the Man that Fears Jehovah (Psalm 128)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6a2ad9ead0db96965fe5e96ae591c5348e4b469c06e27fed0a7bbce4fcf476. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBB2371517.
Before Thee Let My Cry Come Near (Psalm 119)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122b400d79e0312d46ef7a1174ceeb44f6d072680805e287acfc3938c0ed7be3. 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/QZTBB2371518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf225ad74c88af0fc1507c5f58e6ba0c2e4d5fd23a69a9045dd0dbc96dc1092bb. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTBB2371519.
Be Not Far Off, for Grief is Near (Psalm 22)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2523fc988c4199a4f4935ddfb878e405ebce77a0ceb3a82258f45ae07c622ff. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTBB2371520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff021b9d89047dd8b90a5eecc96985cd7a58ccbdc4b4c25cbc817c9c93f4154c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:11Z), 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/QZTBB2371521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d166caa4edff8f71947668983b69ed5a5a132b31223e0fb565ede127fa87075. 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/QZTBB2371522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3a05d859c61c7a973f8c166bde55e1f5e8fd413835ee0a1153d1f692937fd4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:54:32Z), 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/QZTBB2371523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccda1609466ae74d5a6dd2bb34769034f6a3cc5a5d33b65c31bcde478b1a786f. 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/QZTBB2371524.