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 0x05759ddae950ff3282dad05660197e9358922af01dc802b561caddace33f79cd. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0284e51f-1b3c-44cf-ae89-6e697f06f68f.json and https://artists.proofprofile.net/proofs/artist/0284e51f-1b3c-44cf-ae89-6e697f06f68f.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 0x8f9378635b203b896dd1ecef8a99edd3fbeafc407a250d3e1cf6481031337a74. 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/QM6P42352659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1068f70449ad5cc8ecdc25d2e99f6dedc57d716dcbfb8b3a6b2a0b30ebc3a01. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMDA72396197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e6ee256254df5960a023f11ba8a179939c31cad660d1f25d857345c3be9f7c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM4TX2335349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c3453443a95df077bfb3e88ae2f27adc9066efd4cfde69c0abaf33c5b4daf8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMDA72396200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856105b21a3d2b22e173c9ad4af4f8286c69df5bad1536bf2af98f8d894fcb9a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6N22379528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44104d2b2e383e76f77e75ea8a0fff40df2630b1baff20bb39bffa2858dbb2c1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QMDA72396203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabe9e93035a46f6e6f75484e3e46da3660d8a6cbfa4b532fd5bdae5e329c4d7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:59:16Z), 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/QMDA72396201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856105b21a3d2b22e173c9ad4af4f8286c69df5bad1536bf2af98f8d894fcb9a. 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/QM6N22379528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9378635b203b896dd1ecef8a99edd3fbeafc407a250d3e1cf6481031337a74. 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/QM6P42352659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0584e8493dcb31283fb3612fce94bb64f95e15e2e2ee29817078f4dd5c859. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKPL2202214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0584e8493dcb31283fb3612fce94bb64f95e15e2e2ee29817078f4dd5c859. 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/GBKPL2202214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e8b23964580a8ba7ce1e7c4e9deb09a6ea6713de829da9824a26a10f4f714f. 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/GBKPL2214593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a3f356d6fc0055548aa50f2e53ef28a615aabaebe2484524f6e885db4feb60. 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/GBKPL2288499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb078fc755bdbf19885fc9cbf4208d39f06166f35183151a264aa29206d495838. 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/GBKPL2294099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ecaee05c85af2f38f98b1c989d0857874c896a4812b86f22aeee1757fde5cf. 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/GBKPL2214595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975515660fa4aebb4855f289655fa4c1f51cce474662252d466a9fdd775c218a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBKPL2149615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3300b5d9badbb266674043d59a5b748933ca36fa3a74794d6db641bb8dcdb364. 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/GBKPL2166125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c789ed332048a1a93cea2b106798846f7c65379e81597f8b1cc8cf407b40db5. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFMF2367984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b42adacc12a095773a704460ac6ab675948083cb6295bc12545336a43ae727. 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/QMBZ92350797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28356e4444c48da4386d8e327e73aacc353255b337c12a9a9aa8c28e502c4434. 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/QM4TW2365459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb078fc755bdbf19885fc9cbf4208d39f06166f35183151a264aa29206d495838. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBKPL2294099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036df865d1d079cd552c3516c12dfef4a8e07365057eef00098dc20cefd558f1. 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/GBKPL2294064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dec3260e531bedd570ad0b37deea950f3fd9df02d9ae11518b3012c86535269. 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/QT6EC2501914.