{"copyright_id":"0xcca9e16c9e5bc52b0c3a665a89c293c891b3f3d2cac5f9efeeca4f1cad60a494","name":"Leonardo Andersen","registered_at":"2026-06-14T05:57:11Z","symbol":"NIM0359721","token_address":"0xbbeddde297b4abf5c4be99602aa8abfb69e6e9c0","type":"artist","uuid":"0ea16996-53ac-4c7d-98f0-3146adc9ca2d"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca9e16c9e5bc52b0c3a665a89c293c891b3f3d2cac5f9efeeca4f1cad60a494. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ea16996-53ac-4c7d-98f0-3146adc9ca2d.json and https://artists.proofprofile.net/proofs/artist/0ea16996-53ac-4c7d-98f0-3146adc9ca2d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c11bea2f53e07d9e5c9747ccbc48c218e12ce3a661148d2fb75535f076e2f60. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AR48B1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686faa2c53740f622b1cdc3875f812b72ff39f3365e19c69ba86fa0b71cb4009. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AR48B1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c210c53641a2490683fd8cebe491201995bf7129c67fc343ded05f9ff0dbc5. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/AR48B1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de0a85b7bca299e770bec9b062f446a5382be2a3b653bde10be29c1b3a640fd. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/AR48B1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34b5fc4f9f345e1b9a74fd918a6d1b759f0ef0e4cc644dc3983cd0f2ef23498. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AR48B1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad378a84ea407edb420121dc6c9198823d0ba4f8cdeb14ac305283b9c85a415. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/AR48B1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cafb5ec62f670ac8c44f88bc5754651811888c2f859bdb73bd7ea6d4d371bc. 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/AR48B1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abedf06a1fc7e411bdd23d735d43a883c18df9c7e6d7f94357bb82c5c761e0d. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/AR48B1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fdafbe41b75e52a4985aa233a2f9042648275f39d9e24e54184aeceb06356d2. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/AR48B1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648f50e16148e9142a154dc5e41d59a99a8a470e5ccd1b9415fd9e9f8e46c77a. 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/AR48B1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a50e7cf5fc6762fa8b1cc8fe531378889e757c38749c2a10f08e6532fba613. 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/AR48B1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ac53d4d6786faf2ea66156491b96ec1751272bd5b410078f29a34069881605. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARZ021900318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc18023f7d73639bae525d914f998682201eba3781db7933860bd593169c8d5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ARZ021900320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2980d21ed93b1c6ec3f15c696d91e99b0e76a9a1153c193ce05b17d9ce298ec. 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/QM7282424080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7e748c0ea9641e71d2f1652987b2f7b4046fd46c8e8f917e3750425f8167ca. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USDY42389620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358c66e205dccef86604b3220d01fd67aa8d7f11f9a4a5b1803f3ff4414f0e5c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARP571900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933b5b945a5201eb155f2943cb972c3420fadbf7a862932f746f1b20dca85716. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ARP571900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06a44dda717821cb05e8f8ad884b44134e309b9d862ffa6aa4511faf6b7cf24. 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/GX38U2127962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d263a2839d68c7a944af13ce089f09d17a559f4674ce39af7d007743f57d5a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX38U2127970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb97cae2a72cd8d662b62e39928ed4775bf1a5d9262d3095b6b60b34776bb58. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ARJ231300007.