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 0xad50736019af34b6ffdbd1e3663d53924be4f115b4cc8cc1e0397cda8fc72c1a. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/674c1a5a-f56c-4b1f-ae37-ac500142c784.json and https://artists.proofprofile.net/proofs/artist/674c1a5a-f56c-4b1f-ae37-ac500142c784.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 0x202564df0d5afed0317c5eaca302e3564c6ae77fc190cd1b12d504d25de88982. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GX4R52458884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88e71c491173c0ce6e933adc6a998410ffc9e41038180a4033ee6960a795802. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/GX4R52476524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0b1af354d5a18e87e45bad260381da0748a143ac6d6434e42f4e60dca92c9c. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX5MX2451398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61a344559343390d17a3133f3d0803e0fd0101e2e4875a24f627caec25f3e4. 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/GXBDS2476193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95bca2fb29bf2e378284a4f1cfa88837774bb9d5c4f577e9bdf9ca944a73260. 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/GXBDS2428551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a1a54882278ddaebd5c8fc6c61e8d0eef0883267b3575b1f33e45a238a9f64. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX5MY2434239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2159803bc4257f2451cc71240a13e0bf6c9501665f08a7efd64e45fa9f111c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GXESV2443101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f53573ee69202f63fc67c0f8d253ed9eb522ca78b04aded47243ca4b2ef305. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GXBDT2467577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19e48ea27eb76a3c7a991fd35c6693140541d2e9c278facc59dc7ab7516acb6. 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/GXBDT2471658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d81d3c0c76fe3fa5e74ec088380aaa51c72f96d79d8793550f105a50d713a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GXBDT2449017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fa1e5e457bd7591a68d4f254e1bcf121514737f6be74f7eb1570abd44361ab. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/GXBDT2408633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f5b78293325f0c1f405b2c64411dd848996e8b96e1e0162ec14ca782c590c6. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:42:00Z), 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/GXBDT2494153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988cdafa6daecc505383c03a10be00902aad2aec41115dbb4603afce97154090. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GXFHP2435183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe7e45144d0c09a4c1ff26cafd8809f8ed6471cef6b8f8100aef64a28947f9a. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GXFHP2475179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb53cac2c295150ccc0d99ff238b50dc34fba733d11bf6471142f817b38e6eb. 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/GXFHP2466091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f9eb93a5977db9194f6ba31327979f7db5f2a650da772e74a71c0dc9aed12c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:04:33Z), 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/GX89G2546314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d362460ab72dae2ced0fdf151f3f90763cbaebd3b6e3555a15fa8e67e61fbe. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:13:51Z), 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/GX8KD2559130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33f5d94360752a28326d07ef4d6a4a95431a4928edc8cad8166f6b77ea8e6c2. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:23Z), 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/GX3HH2553905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba871f380beaafc658096e4ee8f449abd5075198435496a23486cd5580dab3a4. 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/GX3HH2589217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7115a35f33a6ea9bafb939ae4cd29d5723d96db9bb400e307432bb23b6c9721. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GX5MX2504567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf5b91c725654ce1a2696f895b44edcd662b1c8e74707bb288a2285e52f1642. 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/GX5MY2539481.