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 0xf660276c096a4d1292962e778588618a2b9a79c1d3b72094917cd07fa337a8a1. 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/8a3f0176-612c-4a1a-a988-13cecf502e40.json and https://artists.proofprofile.net/proofs/artist/8a3f0176-612c-4a1a-a988-13cecf502e40.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 0xda94eb7a4ca2bc9613e4af596646395411853c11051cf39c900c8fa7fa3302c5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGJ1311473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec50e28958981ed9677078c8890b7f099ee33d21f2a6e82c0408ef857c6c432. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/AUSH01400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94bbe7100384849fe3175d57e8fc4dd173e171b3db1aebad02782ace531f480. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUSH01400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff9410ce1f1355ac7914ec5e4bb2fce4be85c7df73a6368f8add48981853bcb. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/AUSH01400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb070bf33aacf8ad4bfd35639bbd2b3905502e9ef2f09b84b8bc5a721bf66dd76. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUSH01400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747cc87c05f3ad0354f2f0e2912640e368b17fabe7b385d255ef6f73a599be02. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/AUSH01400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bde8e1a07a0ed790fb24332b24f067ae481dddd1cc21654fd7333d244986522. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:01:00Z), 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/AUI441600305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153f65f147292fd0e86e7eb725fc037a1d760a6d686126687e19a70f27623008. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/AUI441600310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1476879c9bef4a0bc82e9b18793332c65fc17c10231234c8546898167fbbdc2b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:51Z), 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/AUI441600314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6d5e2e8df02accbc0cb1b4738a3b5a848678f827b0e7b27cdd47922734e8d5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/AUI442000197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd002dd2c8f9b5619db9980e620a6018611c3e37bd6da5337a705dd4897d324. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/AUI442100186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac1dbc9f3cbfb710b74636515df902ed19169c0fed9e73c4a39e11c75f14879. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUI442100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2428a9e16bab501803a57b11b6d3bfd83090f09db0f2bb556cce873a95c2d230. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DED832400298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7612128770dda458bfded5293d90e72018b89aa10e5365d68b1085ee50b6ca. 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/DED832400296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e3d02b16a5e91262a7851f6b727e299f9ede64e58233baf00705be676639ce. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DGA0P2404356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e79b7dfcc91b29427cfd3cdd6f75e795ba8ec93483bea1f1098c26fe8767c5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DED832400299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f96a81ea1fc5fdd0044c7aa2e25ddefce058e6d6c9d03941d398378de3912e. 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/AUI441700097.