An allegiance is a duty of fidelity said to be owed, or freely committed, by the people, subjects or citizens to their state or sovereign. Etymology The word allegiance comes from Middle English (se
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 0xc286827ac6dc3d1492c78989e34ff21210ce05eab5fedffbaf04b51fb64dc236. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/86184378-cc38-45dd-b5e4-c15900e52048.json and https://artists.proofprofile.net/proofs/artist/86184378-cc38-45dd-b5e4-c15900e52048.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 0xb80276b5c14b928c21e1a54ef4a41add33762525770b4dc453163aa66bf97171. 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/USG8S0702401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa869b51796394cdaabf80013ff9a77b3fc2c1422df8d082105561ba35d8157e3. 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/USG8S0702402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb5d7d4674dd5175243e0061a4298b0ddf9c56a43a2be3371e9be34a931e876. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USG8S0702403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f543cca55e30ce5086d8d745729c2ca3c51fd506c4bd3994f21cdaff03d622. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USG8S0702406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54f3bd99553ff8766a9fc717940a0689bba39c10e1a332a5dcee512a189d37b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USG8S0702409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc443ac12d643e0fb4d8fa4181086728fb7ed8495fe453a556f32134895c40a68. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/USG8S0702404.
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 0x44847098707e518fd38fde445c6589c2bb96fea052f13e9d08e697d6ba027ab2. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USG8S0702405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcdd6565abab6b05b52fb6d6a95d12abcad08641fe5c6be89f78d9488120cb2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USG8S0702407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb54fdd8e3741cf27fdd887b91ee38bd36657723bed40869610ef78b7308143. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USG8S0702408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da278fe1434f89abdaa49e6fdedf1d1eec2019c2459954b908692e96222e0c1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USG8S0702410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe710bf3bbf1120174f125aa3d0558bfe59d83356dca79a03f696c0714bd4cef1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USG8S0702411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b271551e4bc65b7e1d708d4055d56595e22d9c3cd0097f73807966ae18dcc9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USG8S0601202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbed2ee210c718d18721e4c5cd3d9a4625b6f6556468886bdf08c31f6c2c1b20. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USG8S0601204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f7b91fdcf52d2d722d7a715f4e1294b603accc7ca23a4b66a2667600dd3bbc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USG8S0601206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3284cb19651aed68163e57b0670dd84ed50fc803a9221847d6e8a1bf0d356cdd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USG8S0601208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b861123d28ce62439e3393632d2d95a768e6d93d9d6a2b20bd1702ce2029386. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USG8S0601210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4779d53088963a4a40519c5da4206b6d43072ba38b88102607db49aeb73c81ae. 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/USG8S0601203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d519715baf929532cef5a9ff54a6e597967d2d55dba66bf120544ce27b47b0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USG8S0601201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f4a2294afeb3d20d2d75d9ae21f9423d68ec55a1b06a64bf98801b2f2a6a8a2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USG8S0601205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e58f6f4c84511c4c2d54e6fd636a636f19388dfa8c004cbd905ab0dcfb4f0b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USG8S0601207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91504990f63879e355419edc3b986bbde75ada24cf589b1a2dda563f86a2f0a. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USG8S0601209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54ee8ef879bbabadbb756c5514ec46373f3a2428e08d55bf8b1e30a2978843c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USG8S0601211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9072da4e164cf8b683fbea327aeb108a9763ada6a2fbbf06c5b26df452ca61ec. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USG8S0601212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b881fb33b04e25817ae7b8d1f5d4148bab9e49cba2bdfb9b0c8b0451ef6e16. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USG8S0601101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538e752c78141c2998c23454719148f576dfe7a5c148d104a762ec9cca585e07. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USG8S0601103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f6a1381046dbc46573ce76f723b2b236346cac6b601344745c4ba51f7bc6d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USG8S0601105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4989bdd0054d80cdefeada6e95961afe4f1095072c6ca9026404f65ef18326ca. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USG8S0601102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe2d7c532558249fbc25a34fb7e82efb7f298d4d02bbb25e65f4af7289b45ac. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/USG8S0601104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca374da2392e886ccd9a6f14be4862870284bb290e0146c61714dc1042afff76. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USG8S0601106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405b5aae2cf6d0ff2676a91ab22d8696ad6e6ef0c37806e320654863e3ed67f4. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/USG8S0601108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefe68e9c8089c7ef72d63db012a140de9cb93c67c6650a31b0d39651807f0b4. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USG8S0601109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec205f3299191a701b1c7878da1e01b6f6e468493d7e1e8fbaf2e4d4ab72a2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USG8S0601110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb5a66ba28b4f17f1e6a4566a7781927fa20364971d09d6ec47e31bd2d0651f. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USG8S0601112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c26392a3142e51b4ec1eb7fa34821fa2aaceaa3e7f05d44a15103fdd1bbe67a. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USG8S0601113.