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 0x5a8e4068cdcc9a2e20f6d4627ae5d61ae3a302d5c3b20788f904e14b88d0a112. 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/c0546095-430a-4103-9411-b029cd7a7bbf.json and https://artists.proofprofile.net/proofs/artist/c0546095-430a-4103-9411-b029cd7a7bbf.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 0x78ede3329665a7ecdbbb796b08eee9db0a34b07e0d58357a1ee2f445a3154a6e. 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/QMEZE1735028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadff9fedad19522b079855b0077c94a1c89ae01fc556ae5ea525c6d492b6121. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMEZE1706599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab45f88240984966f1cc2d682bf020b0c47cea87277b93e0a37301b7a0dbc5. 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/QMEZE1741607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe696784001b741a97419550d5c4311adeae15df30f5b628803b8a3b1974d4044. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QMEZE1706534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d31a32e1cde01a10fee1c2521946d69f5b6a59da811a597178561ddfa441fd3. 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/QMEZE1723589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f3681f2a7388e3391c0a9106604f0d7748e12b6807c40babf57d7386d86f02. 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/QMEZE1741604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f800b75036af1e2e3094d52ae105a7c63c98a464d3efc6f854a46df869132c2. 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/QMEZE1741605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3997265e41ef8256f57d09776147801679d2bc323a5e35768f9736f36c350392. 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/QMEZE1731798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea171cdaff03ddda1491d3128657fc9ac423bdf17022640ebffcb6768e2d13a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX452263930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10edc06fb7ea00c52300c2c5417b0a7f00918232dd4fa69eff36f584a173f251. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES52107696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadff9fedad19522b079855b0077c94a1c89ae01fc556ae5ea525c6d492b6121. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMEZE1706599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea171cdaff03ddda1491d3128657fc9ac423bdf17022640ebffcb6768e2d13a. 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/FRX452263930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c16226f71eae2da9adbb9816eecbdc19bf8932ed7d7b2018d32096d079dceca. 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/QZQAY2218058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e58f909e7b60587c63403b1db908543ea45bfe1564bc45d3dc9d4e2f3a6872. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX872265638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaecc3379e9e5621db4a8701321605a392b46f96b7a9fc5bef7305834f9c5e3. 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/QZTL92281953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f16bc42d4a53286813fea4293acc0b3c2ffbcc96e6f6fc0a5922c46578cda9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZK6M2218804.