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 0xd76d3457a2ac4abd204c5edbe3303261581756d677b17469f0a3a814c80e23e8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa797e65-ea04-4c99-b44f-e57ca1b132b9.json and https://artists.proofprofile.net/proofs/artist/fa797e65-ea04-4c99-b44f-e57ca1b132b9.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 0xbe3f7ffc053dbe057056bc6454e4e851c6b443e9469edbfb4ede6618a719bedb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEAR41422719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c6df97dfea1e34cc20575521055a1924812b113556f0e6cb51ab48c6070b1e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/GBKQU1571779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8ad967fa63137ed5eb30b4b849fafe71576991ddc029243e91cd3392d6d574. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:10:48Z), 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/DEAR41530688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8e610497d06388218f4f2c53d52003c22add61f7b822f9b8fb924737206647. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:51:30Z), 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/DEAR41530685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b617f8c1b77860726d9d72dd77e8c01dee2f3f7965324704deb7b1491a343f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBKQU1631155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80ba08d6d8af175d196861bc70c683eb378b954b009bf67e89533a1f7b567d2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/GBKQU1631156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8413768aed37581f41218133fa599db49b11275f813368441bf144a66313199. 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/GBLV61706426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae6b8c227b2aed5eee5e871bd952b6a0cf7613693ec563b3f668e21377ffb9b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBKQU1808949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f9c67df9cbe05bc89eb35aa87c4558aedf17c108590f7c63b6b1b0b7b62419. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBKQU1852912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19db40cedf74e8796eed133fb9311fe0cd3adc6ee7d2f4ad725ac8dbfbbeb83. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T13:46:38Z), 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/FR2X41855269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa4d126885d4368283bddf5339064280a8d0964a36ea0bf66818c4d43fdf68b. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/NLD681803734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d8c9ad731e0ca0b0ece22178608e2b4de49fc56232baf657653b3109d9c513. 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/GBKQU1933514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba857eeb3385356538964bcfdc116d35c73c8846c5f37274cd7338b27e2996f. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QM42K2084858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e6a31595da5c1cc059032ef8e9dc08bb31d2b15c0529af19cbc0631349fc09. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QM42K2063025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd1394f384fd82b479a532a8b02c269b32db7b7a0929d9f8c5f05e054531c01. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:32:42Z), 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/GBKQU2068912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cdafd8fbd4d6cafdb71bafb431081ebcfebde6b5add0d1462afd46615907ba7. 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/NLRD52119499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb75455604455237203ca97b2016230ad6982609053b3a20c3b20c6056a38a9c. 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/QZMHK2268527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053b2c1d238ae1ba7a74b495c2c1b7c79983daa57f3869d70b882d835e0e44a. 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/DEPI82454408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a3c6613b455c56fcbdbf84c4402dfea09d3dbf6c18f0e4755c7538b22a4534. 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/FR9W12433426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a3c6613b455c56fcbdbf84c4402dfea09d3dbf6c18f0e4755c7538b22a4534. 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/FR9W12433426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe053b2c1d238ae1ba7a74b495c2c1b7c79983daa57f3869d70b882d835e0e44a. 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/DEPI82454408.
Progressive Summer Vol .1 (Compiled by Progstylez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b65de8a3fc093bc3daa6ebcef6d754838c58e1058abad2b146899240c6f33ea. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/DEAR41538054.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch