thumb|right|350px|A town meeting in Huntington, Vermont Town meeting, also known as an open town meeting, is a form of local government in which eligible town residents can directly participate in an
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 0x5367bc566d53e59874aa378c8a645a9ed2ca806a8a75222de932ab33696c720a. 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/4b52613d-736e-4c21-9b57-08dd35ed57ce.json and https://artists.proofprofile.net/proofs/artist/4b52613d-736e-4c21-9b57-08dd35ed57ce.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 0xddfc9841953898d8d737c61021d6a2f2373fb39d959958d4dc60b1a2394d3854. 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/TCAEW2088822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adb1de66a126324b43ecd17350954e6a11cdade8f52323a54267f54d2ed7d43. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCAEW2088832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe163b9ca9c0f68eef51164244b8340cf68f2ebdcbca3b1fb86396f1e21e0908b. 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/TCAEW2088842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a395085210c9d628cdc169469dc0eac2a79c329267323d5e9754723f8e74224. 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/TCAEW2088857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05872736f190e6d899be531d90dc834b105d1c68021df86e986a411168e6e1b5. 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/TCAEW2088838.
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 0x4f4f9c174c53464a8bac677b346ac0977ae7d544317d5aa7051ee575705796c0. 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/TCADQ1880983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42486d0c8f58394c79adc5c49cc611aee4bb7e32ef8df4219b6687024b8690be. 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/TCADQ1880986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b9212542ba337b5093cb4aae9142843fa6561eb5abbc473f8bb4ab540b65da. 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/TCADQ1880988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0041be25a22aa40e830058e1920a2c7239c9c0491b602167986526ec3519d7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCADQ1880993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f95c670bd457c18794b37d6a8a380eca9358e80478dd21a0951cd5bda46e8d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCADQ1881000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd270051a29372a8283982c4ecadcf6bd819be58700db78c5e1c1877506ab5fb4. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/TCADQ1881008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf22f228761847e1a8a8ae3b89e54b38f4fe282ce8498ad09e70a1c9d5409f846. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCADQ1881014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5810a072f033e2b3965dd1e319e55bb1f914bb035283f9d5de3970dec78a95. 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/TCACO1683845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2c37992504facdf94b105288ef45e4abd5a4d13c649ff4688edd2dff59651e. 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/TCACO1683855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cd2357902af29f7e345b764e3308f8ab2dda0ca6535f74923b056070f72a58. 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/TCACO1683863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a043cd302452f83b8201262a7c9c582748003d3d3855d71bd8cf52abfb6fe8. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCACO1683868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6053a486fa379dc4f0e429525c06d860ad5639cdc30c2cd3870d00762df3e7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCACO1683875.
Honey Please (Get Me High & Take Me Dancing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eef96b0bdb2c197d86acfc6c786f46daa9550930afa78861aee6dcd9ae68d9c. 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/TCADM1854509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16161a0372ecf2b8562b05bbf1d67220c3a261157add6a4b9130559dd55a56f6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADB1786956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9b9c3c51e1d5a24686ebd89bbba03654618cf02164e4731ac3ce126a75e96c. 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/TCADB1756070.