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 0xad2cbeaa3d862a32fab81e71677bc80ef53b6cdd485b34adb3600a33aee944f4. 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/36201470-c2b9-49f2-9081-7d97725c95c4.json and https://artists.proofprofile.net/proofs/artist/36201470-c2b9-49f2-9081-7d97725c95c4.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 0x6589e06cbf286fd2224599c8a238ba1939d976851c9528ba75b031e81e1e043e. 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/QZNWQ2398703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9228958b300f5894f955a324463a0aafe0d2619dbbdf71dd7bb5a6a4f42b77f. 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/QZNWQ2398706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc44b7ac0192df792436fe7a33fb8ce95ea691090c56c86c1f7f385b08ff4d. 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/QZNWQ2398707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e1fa341dcb3e5cf160fec8338376d572b7e7a31a9420d88d55b0e696ba2046. 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/QZNWQ2398708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd37169c675bae8de47d930e2af72b1e6d7afb580ee2722ce580b5194abfd76. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWQ2398709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad69f16e030d1a5d6424333d31921f400cb5837c971b97e2627d10f56dc3745a. 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/QZNWQ2398710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fc60a25474312356d51ecf53742c3f967993e1d6994ac580c12294fcde0a31. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWQ2398711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bec4a9e011b5225aee9893df3c3e788e029e52b84b99760a740e0763c5e886a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:52:30Z), 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/QZNWQ2398712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e6dc858e837e7a583a2dfe9cfb90b4d8995d765dc707af6bd5cc1d9a42f070. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:30:02Z), 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/QZNWQ2398713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02eeb3cf584da15d85ccdcbdc52aedff8982afbe9705224ddf8689ad178dc337. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:40:38Z), 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/QZNWQ2398714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd071744e86bebcf831af4f0a3e7a219345ab5c0127f323597b778de9e41687ad. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZNWQ2398715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d578ef4ae011262a1e58260425f3b767e9deb68aa9725ca45aeef8b49f9fadf. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNWQ2398716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd8065f53961debbd0c65827b9e67cd59641964652da42c1cda6ed2769eeb04. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWQ2398718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a72cc35d3e1497eb3a280d22d0e338844985054ba3f9985b9bbb82b3737038. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWR2386460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8070cd30702d7ab7467b82b0e65f9e88c1d2d0c0f3b9c43bcaf256a957a9ab2c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWR2386461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5883c7c7e862314c21fc201e58643cc56e34e128b6f14c6464ad922d2805592c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWR2386464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a85d7ec55e8effcce934c020db242450b5d4927507ae7a5350ed4c4bc51e7a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWR2386465.