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 0x5564deb39b4daa92edd53da5b83149e12bcd235eabd0f6e9deee900e2b637c40. 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/7d107d19-0589-42b2-8d22-b7d68f9cc26b.json and https://artists.proofprofile.net/proofs/artist/7d107d19-0589-42b2-8d22-b7d68f9cc26b.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 0xb77d7c0ceb089e75eb8fc9615f619077e752e89d7e1af81b86cc9ca8fb319093. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMEQ2067249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58c8389fc2bbf5bb277aeba2bc3f972e15a75d9eb8c08559c7cdc86730edca7. 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/QZDA42202088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a94e88a6271e0d535a9afae1670376b17c910fdcfcf24fc192ba42b586c573. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMEQ2156982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7456b9d2888533f4e533fd588ef75cfa173065e27b13964bfefc63daf3b8e4b7. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZFZ72216995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b3961a812ecca0e46b3f4bf73df904aa9acb2621f96915bcd72c453289c8ce. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZMEQ2156984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049b1282dfeab10b2e5eb5962c24afb5929d842d64f5465e14558cb23077f348. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZMEP2109048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1137905aeed3d63f55ab82d4c96e2ac8bb505345bf9d42d244426af3dff985e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZMEQ2156983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb471f39678c37eab2f4f280ffd8330197d60f65ee778ef96e562df019627e2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZMEQ2156985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74edff469b5249eaef8583f66059102bd71367a56843f14bb5b379833c23ead. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZDA42202089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5d063ccd5fa8a86ad837265140f146a1e4d225971681245573d784397b81ba. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWZ2347894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dc19083f1a9151c7105d03fc24732d073c6b85892611a5ab4ea3760dca2c46. 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/QZNWZ2347895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ac9a4d8472920a5963b6dff1b8b664a141a22fff776208f3d2f9536cef6f7d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USDA12209642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe4bcce12f46382e0c645e7f42d2ac3500f36e2d8c2afe292d18409a5b6764a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:02:09Z), 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/QZNWZ2347896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e14b6ca1f4613a994eafdd681cd014dee3b448cc267a1707e3c5ed69e4a17. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZHNA2334821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0024b2ba72b72054eedfd2debea9c458d1333c2efaf9acefaaddbc4de7e45083. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6K2491551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5aaec360bc6e6918f99c308a099fe59a23bcd1f1d057264e480a1e4c04c9c99. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZNWV2427117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc69b06780fdd0d373415d051d9a4a46b2ab883835b52d88fb04eb62913f35b3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ62564250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5196f161a1dbf1e40fee7fb05290b5d951d987464de1538636d073bf82368d5a. 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/QZZ7T2452406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eca1b9bce48c1276cc478ee0dd72675aa0aa7b6061377a4d0c3762d72275978. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNWZ2567373.