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 0x2b8fb234c6a4787bd11ce8a0a2e68969efd26b53d10c623ccf7e7f9a72391291. 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/4f2db681-4ee3-4031-8bd3-d17c37d4aca6.json and https://artists.proofprofile.net/proofs/artist/4f2db681-4ee3-4031-8bd3-d17c37d4aca6.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 0x371fba06fb5c8b7a04e36ae50ccb0fdd308492f4cf96d20b4bb6f01fc83bfca2. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FE2514248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454e4eac2668a81ea376256d3e37e98e3242fe67123f730e6f0987f90b03ddca. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:28:46Z), 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/QT3FF2557324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f322d8c0936960f4f8e654c88d596cffa9bbc6238c2676755da436554cb1f4. 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/QT3FF2555120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4c5eca359a9baff753bc561a522b92073e9caafeb85081102067a5afdb9d67. 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/QT3FF2557323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef06e5d7ff89e4da6d0f5533f61f63edcc658313afa62e71ac4a69bc995d0f1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT3FG2548227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dad0195b965102f18aff0d50fab148a5660dac7ef613f0f6c3508192d21d84. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FG2551532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0c29b618d30d6d197ce9c3949ffb14962c25699144bada81ff800e01b1cd3a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FG2551530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa457232ee36986b8fb70702c5fe5ec8388b403ec39c22752405190a1dfd2ed. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:13Z), 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/QT3FG2551531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066205987f77416ca30decc36e8bfee8412a4d8d145dfcabe963cdccdf1530ff. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT6E52596982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef7304c3ccf78da6dedd5dc90379e1d03a91236277a1db620205e23cfd7ab2d. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:28Z), 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/QT6E52596983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d5e3424257e8a5272d4960fbd3b6832dd0b6b3f0a0a77e43da5071d94acb0e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:40:07Z), 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/QT6E52576113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146a00e16fde2d2ad5ce0ace6788a1007e7e2167a24d020f2c706e552dd20e64. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT6E52596979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38ace74d0bfce8fea0dad6bcdbb3848bb490a6c0e17de572a12ec11c0f8863. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT6E72521903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee6906b855d5bdde06f10bb8a420b6bfba0c67a7a144c9a468cccf420dec908. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT6E72521901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d0ef6445447567eca801bb93ba20e42390c549dfdada1943136d9c49e606ed. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:46:28Z), 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/QT6E72529722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6875d11b8b025606000ab17873fafd0352a15f2c8afacb65251095c9c05b0e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:05:16Z), 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/QT6E72525045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9631179972d8df54d122704e28dffd3210665afdbe192c8a393eca2143e539. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QT6EB2571143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83da8758e2f1e6566a00b71a776b4d407cbad35c4dc3528f89e0cefca0b0c254. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:49:52Z), 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/QT6EB2577593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388ef803fa4faafa0be8c6beda8e1593b9c22abb2024af576559dce5cd2d71eb. 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/QT6EB2568244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae71a945634832cd290a6e754b449c515096da75a486fcf9ff688f2a61181c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT6EB2574026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0ea76a370483a82f58f9da104cd3b878ea30b60ecf364ef07499932d645a52. 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/QT6EC2582916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc03ddb02cbe780a6b497882a1fe5e837744fe9775b6c49bfb5289ae3b12ff73. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT6EC2594217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679120562e787ee32424b75ed28dad56e1790e29347ffde0cc8a905e3de1fb0f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT6EC2585815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b1483e5d73a96763f550e6e2df1e969af2ebaedc718a747552f8d10c91cf48. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT6EC2582918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78abd5167009236e4e58790b050e64a14d0808c884933eee49e9b4805a8dcebf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:06:23Z), 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/QT6EF2504183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdceec4b6991912cd57558e36014176b6f81c122c206387bdc92f596d4b79594c. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT6EE2594495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7205b2e7b49dc684258d2fb2d6204ee7cf2959a191c1f23dda6ec6bead5f96bb. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:57Z), 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/QT6EE2547387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84678df0cf3a48de1468cbed482bdbc0d9f0e06c0c7a3d610f497c8734ab3b6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT6EE2570421.