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 0xf97bdb55b9597f32666fba639aa9c5fe82e24d2566905f481b3e320d7ee22858. 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/ecd0d34c-5bc8-4bae-9230-a00ff1ff1a58.json and https://artists.proofprofile.net/proofs/artist/ecd0d34c-5bc8-4bae-9230-a00ff1ff1a58.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 0x40ba5281e685f5d30500859852c2e90893394db4fd257c0a6556bda1c1b6d25c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/UKXN22331258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca6bef20e077637167b07771d2616a52906c41589dad4e710093230286a9a30. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:38:25Z), 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/UKXN22331263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efe5375173736c61db1a2305f1a0fa4100ff42dae403f40c414e1b5f263a31f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22341128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6179a5bd34d79cb54ce397a6131e71940e4e4c5ea99d7ff68ac21ed17018b497. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKXN22341134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07e2dacbbd3afe87f9b45b41df9cd233c6a5f95c673b5cf9c9d589f699b485a. 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/UKXN22342004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9733c7b2eedbd6f611f4afa8c834f2852cdc9c2fb950224e45c7bdc0993aba. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/UKXN22361694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26618605b0a844f913fbef92013abdda6146514d68b082a3cc65a5dadf81cf1b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKXN22361695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac687e38ecfd09d4cc912fa86c5e2f8884082711414d732a9bef58c42ae95aa. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:04:06Z), 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/UKXN22361697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a73aa4ac659d1ba2412101f152c71d01b53aa29e67e60eb410b17de9b2e014. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22375382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234181551681691ccea6b01b0e34c0323bc4090203489eaf570d590e752d537d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKXN22375383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a129fc67675330b19bf0155969641a91b1545db9839cb9c0cbbcf1c637f3821. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/UKXN22375384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bfae556bd4b50e2d4dff19de38cd8534ac8461d83d9bfa6fddb4b4370b276d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBMA22303559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26d7985f2f40ba1cf96f2e9a9b0b6b8793931df5615a1b0c70b10f46cfa4d44. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBMA22303560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd301d3170aca2765362a8a5e215a836ecf491044184061c00ef2e53e6ec845b3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBMA22303562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef61252130f6e041203282ace568c04a44eec216841a70a069632c1f31397a62. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:51:41Z), 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/GBLFP2473164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x485d6bbf9db9bee1fbd09175232f8215fd03575bd73f0866958303a9f48ea275. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLFP2473168.