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 0x4edfdef3c1d4e577d302e793c7c293b2a1623c6bf76d5369b496aaf164c95a91. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/efa07952-ce4f-4002-8b56-31b1a9899fd5.json and https://artists.proofprofile.net/proofs/artist/efa07952-ce4f-4002-8b56-31b1a9899fd5.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 0x71152501af806760c0162fb5c26784bca974c6b2a84c9af3d1e207ef79d8ea36. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ATR981242658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7365beb0ced2a682763a11de32c2405341394849923dfd8982b1b2ca6a4b61. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:02:26Z), 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/ATR981287355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8949c6f4017e79a178851f4cb4c1818ca6c84c30ab5f780155e795607fc0e9ff. 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/ATR981287361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc438e9742d6cdd9951574ed39a6a60d518e1ab4f1913066ef6a80e7e995a298f. 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/ATR981289378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3346422d98a10b65d49aa5dca97cc7bb8d36379455bd719cc2ab785321e16ca1. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:12:00Z), 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/ATR981291041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddb420a691022b44067911971d4091fba46997f66c2e0b0776db0e5bd7c57bf. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ATR981293758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc450fe048114c8c147ab9832dd25b6e320a3acf5697db6c37a29eecf55704fee. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/ATR981294522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35f6fd84490529d151dd23f63f79ecb41a6d4cbe7aee6a25dc7872380480c64. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ATR981295189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9457819bfb6abf5c44c37e6244071636a97aac2738a8e1315419b5a0fdfb8ac8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ATR981296762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e3f32af39361a24bf42726e928494b2b9c9151f8cdcf619edbfbd1a2f2ca1e. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ATR981303173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698d7060fea9131bab4c5e9ca2c3a59406cc710e155de5cc4fc69dd810c37129. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/ATR981303639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5badc83449e3b291c8e8445fe2bf18acc0da16684763275fb7848a7c445dc73b. 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/ATR981303641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc015b30fc1b994f4bc603286f400972eddf9d92b355f28a93823ee991bcd7. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/ATR981304546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ab69852228f442b06a98908a3e12b0f1a71e0528c44b97c6de9beb857d0145. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/ATR981308374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c6f3cc695b814d26acf732ba4d4da350c349f05f05418a0b37e808caa13d3e. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/ATR981308851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e36edc211f9d6dc4a4e4b7bb9bdc283913f9f369be3d3a1de47a7dc09672dca. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/ATR981309760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae1242ae767893ca74b1544e3f0e4135f87e9e33f7f85bc3797b5f3f9232f18. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ATR981311450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ded0358548e544deb7fde8a62653adb1c5803f96ed572a0723c4ffb4c1f47b. 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/ATR981313737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78d3b8c1a8ea40b260a48dec2f9ce7c74ed1b0c0b06b8c4dad4964789b29e97. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/ATR981313252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73588a3d6313c096e3d8ed682ac32b1f220d8846e397a6f4485c457bcc3cefe1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:00Z), 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/ATR981314314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e4c1dda8f2598dcef61d46f39c4fe370872e1579a4db6ae3091d110c764b84. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATR981319475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ad50f4c07c3937ba19e1a1258a1c9bd2ea3253959d4bc79bf41d783a89a8fc. 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/ATR981328677.