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 0x5d02e2296b09ccd61db96351fdcefef41955cc248a0e70fd06605eb05bdac5a9. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e4222e4-44b7-4b3a-a0ea-d00afa32e03e.json and https://artists.proofprofile.net/proofs/artist/3e4222e4-44b7-4b3a-a0ea-d00afa32e03e.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 0x22ee79b12e67bce3a887d1d88979cd0b11209ce9cd60ed60727c4e433644f5ca. 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/QZES82566843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f5f9190e6e7f2ab24ac87d4f3f3df6c586edaff807dc3e782e2eb5f764ec27. 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/QZES82566844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad23e6c8967ad03aeebd997a9222152b44070f4f688198428c7b006bf972a3d3. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZES82566845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dadf59d4c05973f2e2172031573c2cf8b71bb72e54a0e9b5bea98d22e42f1d. 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/QZES82566846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b90b3715c5c69e9e17683a5a089a02f9e7da0bae75aa3b48ad22ceb8e66a72e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZES82566847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cd22a3f12aaf9c78fc2d08592906877c15a0afcec760a37a43b1320cb6840a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZES82566848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a815c7b1fb14dd6d0825ac1daa9f8c73fcafa08686968c465995ffaa5e9d11. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZES82566849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b139c6aba5d3c0eabfc87a0df63c1b21079b7877598ec4eb7869db5f38e4f3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZES82566850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7415d3f46eda34797778a86826f500ea5d83c60f573d4f0e24b91271efd91e7f. 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/QZES82566851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f13c7e137b9a175e1c6ecab15043dab61eb68414f3cdd7c6ca88e3f48668cb. 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/QZES82566852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467d095ba45326cb74924b28cd693ccc597dcb0ecae797f107fac4d2fc6cb487. 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/QZHN62545201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4762170723fc0f1ffb0d1b8004bc75f4c6f635744a9635a30350e0b80ad537. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHN62545202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0bbe736468c6d0b5015d1115838e54e5ab09144f1f7060ef74544e85a17be62. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/QZHN62545203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f59980b8d6507d5bd251d0fef2e96ea806e72c2c6f0df01c11994ec0eb20a3. 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/QZHN62545204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a98a683cfb96938d7e827e56650151ca437e85d240c857d28dbc17be08c42b0. 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/QZHN62545205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd6e4ee6301906398e030dc0d713d3495113c739d557bd500cb9492497ffef8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN62545206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebd53665a0c6ccd60ade59995516bd6a93f470675099bebce5d19e85fd482f3. 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/QZHN62545207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd6556b8440a59978f3a28612c027bccd4ccf23bc61b13daa1ea4193f13208. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZHN62545208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5dea92c0f67c0f70c0d7b11a1c7f571c12c170b877b040fc627dbd7c7c61d8. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHN62545210.