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 0xa76c2e91003e9227e9a03e47b8a77cf2551dfd80e32d09652e0638bb3d9a4902. 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/d1853749-d011-4f7f-904d-dd5a1ac73d1a.json and https://artists.proofprofile.net/proofs/artist/d1853749-d011-4f7f-904d-dd5a1ac73d1a.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 0xadaedb4e82c11b000e5c47a912845cb8bdab832bb1f28bbdfe65da7332d4047e. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:20Z), 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/IL7192200329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84213846ff744a474ccb0e6a2532ad6e7000af02a8eb9afe7a357a9a8c9db0a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IL5821500475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237184f2eebc681400b1f3b2dec83c7727efa39cb2fdaa72c4576756a876709b. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRX281950484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08e932531249742d8b0f0e3e9a011b8cd85fa301c7b689fd72861a6922626e7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX281950487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4565922a8e3297d21b9e72dcc0638401560c0bcc26e325cef25e18cbcb8ecc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRX281950486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f4137d717d28eeb07ed2d72adbfaf07de165a4607288df1f62b16cad61752d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR2X42200653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee86f21b0d42a7f4d9b04610fc27f2d74428f1c4fc463678c4a6e28fadda9b81. 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/FR2X42200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa589a1887e59c79d886ae83fd882036f2eb08924a45b1e1f100d7dd186868596. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X42200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f60102184f452bc3d20352b3670423a3476819b8d7f105052d9e91789101234. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:43:15Z), 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/FR10S2298641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96ee29d981f8a5eac9ea4a5f2ed6005c99322a4ab1d5171ada6dab560bc420b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S2296214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beb1df3689e96c95c284ef561275d8e163dcad24f3913064ae9c8265a64765d. 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/FR10S2296212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff1051f61058919240549c8e0eb3705f215260e0e2af73dd3f7fbd8759029b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X42200655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827b63a6eeb5c0b50c6cb9c74e35f02a39ace3597096c8a7732231bbdf68fed4. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FR10S2296215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0eb193b1105ec23951b817a047697acf6e4a5ac5d02a22bc93983f5e2dfb7df. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/IL1012201533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baeb0f6aec65ec548f12807b0e8e60409536ae3ab4723f0aee43fadc71bf1da. 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/IL1012300954.
Gaza’s Sky is Black But Qatar Is Always Sunny
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db0c7bbb304cfab9819a5dd2f4d4aab57c7ad2cef3956f239ebb8d8b6d414c7. 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/IL1012300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ae8e249696bf067b82316ce6537b26c5424bed622f54e17ae2099141ba8639. 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/IL1011122135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156ab9318ad1c81cf04d50f46e3ea9cde0361a93cfc38a3e1acd14c34401f8d5. 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/IL1012101112.