thumb|upright=1.2|A variety of polearms consisting of morning stars, halberds, partisans, spontoons, war scythes, and a ranseur in the center thumb|upright=1.2|Evolution of various European polearms f
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 0xd5200f5546a09b18d29e71c410a48ae57f77142606349a55f823823f7c8bb0ee. 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/21f0dbf5-2bf2-4bf1-971a-b706d6c0a8ab.json and https://artists.proofprofile.net/proofs/artist/21f0dbf5-2bf2-4bf1-971a-b706d6c0a8ab.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 0x19f9e3ed938805fbeaa044c44b819b483c80e9ebca1cbded92500f495ca518e1. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QM42K1939664.
ill be thinking of u long after this is over, i think
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a5c9785198aaf7661e969a4632b526f33a0b38d5cd521fb050bd9397f85667. 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/QZFYZ2171278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02ff94a6066602b573b7d3a0beebd2b35f8fc1736c22f2119b6801ba6ef7cf1. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZFZ32287563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9567640dd3d1a9d850f24ca0a868d1323660f6944411cd04cc4a9c94bd7e65f. 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/QZMEN2131573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0247fb5590ba05b199f05ee24263608f8d7762f9354d1e67d623e7b05ed426. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QZES62190288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb06b171b517451c5b626c70c5e9eeb63ba8dda231f8301652cff8ccaf72d83. 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/QZWFG2314022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42432ceb3922c4114edf988d201a9e5804872c6e6388acea7784c02525afc24a. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZMEP2363321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d32af6231c5f8a8cab27d7dc62ac36346fc808efbf0bde30644320827c374c. 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/QZWFG2314023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d98b8f349e090c589d73821592efeb2f45e101c17d477bf02cacd995db183a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWU2383833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde55ac7c226f361f0994aec2d4a89a6834982207b119e9132de6e3d04438650. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFN2490087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be088257ae360b78afb13ab24452c9917ff27ba11c0b3585cefca464a00a41d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZWFN2490088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689b8eb741f8e5185c26f2c5889774f39a6649db29610b1d893c97708a908f91. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZWFN2490090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaa8c5e723ed4b6cef51e0ac9274e1cd34c266db40e0f4e330191af80d9ac05. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZWFN2490091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c32ba509250e1e40388b99bc415c97f28782ad15a0c40a3b16ff432ad8b29e3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZWFN2490092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b913c5d782e40e21c458a97149ef6537ef221144cc9a874779c00b95e14d31. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFJ2464063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cce67f5bc208be437a88efb0ec6c5636ef61e5b3af273cac3c0ecdba69fe77. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZWFN2490094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a24b940a1df74a3caf48d90b1562ddb03d4fa1a06a4e01448a9d12ef09fc96. 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/QZFZ42556685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884bcb9670c05d5650cbad82f72acc870e03ed5e528f032053946bfa1d2a4246. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFZ42556686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed52cd0e39a33a7cc08caa40debd78f0de0ca92fe6ee8f270326dde0c0de8b7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZFZ42556687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c598621cca48dd7c95682eb190c0270861d6405f5224422b5e1aab10a1dc3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZFZ42556688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e2ac8f96f1d4fe57761af687130b9ee500ae70949e52178ee0071b214011d4. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZFZ42556689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d67e216d00a73c3f2e35baff0d58af64716bfd6c59a5f1c13e7e906aac97ca. 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/QZFZ42556690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4903db24795b70a752ec4c537a209fcc8a9121f5fa235b42cbcd4f3adc7ab46b. 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/QZHN42520579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e7ba045c47f4b2fad01b704626d3770553fa5de118464d1224d034abf1286c. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZHN42520580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42277a410761c6c86bbb8ab93604fcce49b0b9d7898ed955ef31e77f7bf7e635. 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/QZHN42520581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63abc78f031d1dfc734e1e1f5a32be537b57bb075101f61582ab031672c8010d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWZ2503680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6472bb6c6df7ef36b46debb29938168f4e85872ddd14fbd75ac8606fbbb36b9. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZNWQ2529691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51198ba4983814e1c62b38b29fac4e594c3cf8ce2bfaa04e0c74c7b2a6e7fd0a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWZ2509704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67483a881319331a9990efa1bfe6ca5cea6ee1d7ad9f7cf52ed9d33ce509051. 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/QZNWZ2509705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63abc78f031d1dfc734e1e1f5a32be537b57bb075101f61582ab031672c8010d. 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/QZNWZ2503680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa1f8903865214e2205f8a3816d9a40c0deb493555c797963b5f77d7d176ebc. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QT4K52544816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71092a54d53b9e24c0d00ea3b68e3f61c237c89bfcf471f9db6518cce1e45537. 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/QZN882078111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf545758c366fd994ac648f5f042b5972bebc39d1add32e47a54cdb71d59da1b9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZES62544995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46498742b77a9ba41f7ec125ec9b8777386552d0cded3d763887c0071ba706f1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZNWQ2077289.