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 0x576789732fe39a26d094620f9a1a16695a9154793d0f17378d06fddd08213aa2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9f68201-c308-4377-b21e-fe00ab830fa8.json and https://artists.proofprofile.net/proofs/artist/e9f68201-c308-4377-b21e-fe00ab830fa8.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 0xde103852570c80f96fb798b710f2e92048c25c7e13181450e7d6d2ea72a7245b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWU2049025.
It really be like that sometimes (Original)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683f21fcdc442a268115a9e16740434407fe850e56a101936b597fc24a452601. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:41Z), 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/QZFYY2249094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84d4b930ec65c98a65ac3da6a1d889a79aaa915b00ffeb0849dd5a5b5cbd0e1. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZFYY2249099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba9d1c451ac4405eded2eff3fc4e17bc28c1ff608f2ed4cb5cef98ebf5b9ba8. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN32231225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2fa8376632c607e3f715792344ae2727717b7be1c857a42f17d43dd69d643b. 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/QZDA72375144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06e05c92888082c173393a859f45d11505c49023c1556804192cad9cd437364. 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/QZMHL2244068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56564fefd612776f6b739513521fa9207418de00e9d0f25a493b88f940dc72a2. 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/QZK6L2247525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75097ad2d0dbdcec745bb2f1385f6e12e7b77e12ad678c505f1c3e16c4a5e52. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA72375147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d95f2c3dbf97b852b89135518bfe4efad7006382c114e547ef8290270ba2c3. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZDA72375149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7942801101f698b8292a05d7d7c9390bf9c9e0024c819d2571ae6b0947256230. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAX2329117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f1c9111f17a535ea87638c5fa918f0cc3061dbabaa0cbba11fef9ec3ef5172. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6F2304925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e8f4743350f5968a6f6d8242cfe9f6dfff0251d482363f216f2bd22024e771. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T18:20:37Z), 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/QZS642408074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba773b276051f7eb232acdd8384daa761be1ca66456ca8a90898fb389e8efbe. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:01:12Z), 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/QT3F22457536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5f72e618fb50c243ab9624c46ebf6bc1c1bfcf686a3a369ddfcf502507eb75. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7Q2536214.