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 0xacd539d203486e9f0471fe4da46a20930f2fd411b1839f9f95fcb7ce51dd6ccd. 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/33212fad-ebc6-4811-b288-67d34e5b8948.json and https://artists.proofprofile.net/proofs/artist/33212fad-ebc6-4811-b288-67d34e5b8948.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 0x2fee78a4053904fad8407c377ba618a971701de151aef0c37eebb38d303b2858. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZNWZ2162083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ac9beb23eeeeba804b9ea56dcd2de40ea6af879ebbf72868a2c8e5fd5ed292. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZNWZ2192771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2a9419469244269ca68ac682b6c6f195bd02510cebd8310427cae02b3154bd. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:27Z), 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/QZES62228175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a01d9c4680de9f77cc883abd266fae0cd44fcdd0a0b0003b3bdadfede8a8d9. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN52233615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe16cd9c000ec5de30504c0cdec44e78e52e8ac5864d8e6550290e62297a5b2. 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/QZTB52288579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ddec437a2b2c1a9e17b07c654b72572e31ad821cbdca54727a2261389bd937. 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/QZFYY2326816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7fca4d7937af2f5e959acf0807830763b861b38484415609a8a4c414d1e296. 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/QZFZ22399496.
GRANİ ERDİ - BIRA HUSEYİN (ENSTRÜMANTAL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9335181289c9b6742713bdcd4c2eb1aaaf8aa1221186df08ae88b423d4a391. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTAZ2353226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be71f805a23c60baf27499513d5965530bea7ed01ac898efa43cded9640d957. 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/QZTAZ2391806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbac67fadabb7a43dd7dba97c6714ded4968d40db14eb686b6b0c0b9d8a3230. 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/QZES72491937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dd04f4b2e6182c6e33e91af17fb6c3307f4833eaf7a89e57ad1efde67e6328. 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/QZHNA2572616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966bf1757fa6561cec17f0d4d42d187c82bdb2dd6637da6b07f88aad960db97f. 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/QZHNB2593255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9884b4cc4cb0c9700f876e0abeac4872c6e927df440fe06895e1fe7432ed550. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHNB2589026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24b43ec37706bcf5d8f6de529ef5045e2a834118610e64feb033927c1739680. 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/QZK6P2503167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16be1efd7a5a6acdf1902e8fcc860db564afa195246b90009e934c4f8dca8111. 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/QT6EC2555136.