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 0xf602752909e4e716694084c10195595eef2cbaa838a335b546ca7124078c9c99. 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/4266d703-9cf9-43ae-bf89-b546c615904f.json and https://artists.proofprofile.net/proofs/artist/4266d703-9cf9-43ae-bf89-b546c615904f.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 0x649a2615e527579bd2707dd865a7fd0c9953994f69973c9803265ccb2b6e64f9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:20Z), 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/GROG11500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124cd5c8a4ab1675c52aadb834f148f11b95d39adf48987964ae7f8e703a1dc1. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:53Z), 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/GROG11500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498275f4d6c106af44f6a885a9fbbc728ab9dcfcbf3350d87b63a6920a7fab6c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GROG11500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb9cae7eed8a84585b3ebc5663b1d8c2d924d9e308d62578e9c98e0e54776da. 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/GROG11500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672178232bfd6c82d55f2380b1955803e533635d0ff7a98c58f04a3c2c6d2000. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:47:03Z), 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/GROG11500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ff37eefe5c579dbc9db8d48cc3648045ba9d985d23ad41606bb86a2b99fc9. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:46:54Z), 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/GROG11500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481268ba9be8eadd03c9ce41e536bf18e3b2db194dad697fe4fc782f5f2b04be. 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/GROG11500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc47f0f0c2cea1f155f94fbcde0711c81aca578182769f247a84e3a6ec8664f. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GRCB11403125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfa74a8eecb23ee17eb66d228d056e5cded92073b579b75fc38c2fdcb61983d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GRCB21400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c9aa82c146df1fa8641482001629dfcb547049ae11dc66b1560e6f3f4f837e. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:19:57Z), 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/GRCB11403129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1afc622f34eed8e85b91d6ac6c33480dfad68051d1dc0f5339e7b911e66059. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:15Z), 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/GRCB11403130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202ecd86d1df934a7446b9e4676a8a483714373008c3e491607fe4ae82a89292. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/GRCB11403131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec117086e7cffc6ae11a8e904e1fd22b607a0109279a439d6607e96486d5b98c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GRCB11403670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622a0d77ad92dc71d50e111fbd352f24a5baf3094519da931b0ebaf4b139b40d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:45:58Z), 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/GROG12100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461d6a9a88b8e4e22e85b871b87ee43f010c6729d6bfd2cf84778c06c63b4d20. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GROG12100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f73c889cf48fc7892f28768b5ded703f630834fd893aa652380cea33a1fe44. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:05:18Z), 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/GROG12100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b95d09f9a5ff30f601ab8b07485aa0709f84c2d95e56ef9f23ab7fd626735f4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GROG12100262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e2f3dabf9b8e5fb4c581ddfc30e049e7a5ebcf9c19c6543a86eec9772431b0. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:25:58Z), 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/GROG12200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad78ddae62305ec2f0f8d0cb68788b531489dfcd0ed04aee6b4afef170526a8a. 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/GROG12200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8be6127fc68c02b3720c2381de2529a3448279d11b5088382a6c49ca6808e02. 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/GROG12300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b852058ea893a8dc3e7b879d7722c206d9c8955263489d8f1d7748dc4d2bdda. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/GROG12300128.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73207b2252730d4d581615f270b25405c3b0eacf7cbeaeb644fd74f8e35060e1. 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/DGA0Q2370927.
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