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 0xa760a53837c344abf10ed8f5501c85cc9694b725922e57a8124f86914f4e9c35. 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/a8d35146-befb-42ac-8f23-f2f124da0022.json and https://artists.proofprofile.net/proofs/artist/a8d35146-befb-42ac-8f23-f2f124da0022.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 0x91dd8e63012c07f61ba099e4bb8e1a23adb2ea86fc03b61b9883d171a9f8a2d8. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZFZ31960844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88c6030f3be89cfef961b8b40e2e91cd1962767044a418a92b6ce5faca588d8. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZHN31918383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f27438fa760ed4c1a4098b33eaf184abeb9752bee415e566168fae3996ec9fa. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZHNA1986728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2ab26d68ffefbff9d7634ac98849ebd223447d86e0b06ed2ae04be5736fba3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA52083681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782b41e5214f9ab4cef36cee19faf6d41c79aaf8162584eb935317c261928080. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZK6K2071077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedb1b46aa600903807f9236ada28b812199bdeb151126454b0e49902937920b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6K2071078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e640cfb1af7ab45b7cf7c59e0a815069a4679d2237c918909283c3003b62732. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6K2071079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cecc9bde02624d7954447da6cbd2fc6c0d458b004e381528eb61c4aa129176. 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/QZK6K2071082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcab10631b7337449ea9bd713ee1fe530de16aae380882f62eebb245c715599. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6K2071083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c274b00e9ebbcb06d4008975c5d5271cb5019f509516d2dfc6ff26a7ce51364. 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/QZK6K2071084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8a11ffc0a316b84b731044c98eb3bfc0caa018db0ea16ed57908983f6d4ee3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZK6K2071085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe707f7cdafa57924f36c9ad694b141411d414c622434bce626eb8b0cf9ee2106. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZK6K2071086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf773ac309ad161685d1e5c957afa4fae5838cccf1887f18e2a460a2f0174ada4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP42156929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5ef7584ce66a383481538a72c1c0ce19ab0a3df34b7bf5b255e00947e4b8d8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ52122509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2bb0fd2d884b96764fb2cb5a85d0cb2f35ae1f85584d392e25b407850a4b81. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZRP42156930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8175e280ae5892d859578c54c1e0496ef6989625a424caa2a91089630a36a0a0. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZRP42156931.
Intro (Bárdos Lajos - Szeged felől részlet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516767a7bdf10730ccf604a16083348bb81223ec2e25e4a958dffa0e1be95d85. 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/QZTAU2235161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114ddc66a3c8423b2c29aaf6a5cf67ca455b55746d5d8d2bb45b76adadaf23d9. 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/HUUM72200057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa650a7d755db4400b81ff833f9fad96d639a0acb23fc296edd14ac6db46c3230. 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/FRX452305646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda708044973bf07ee20794dc99b7f78d3fc1de70184244c5c726bdf03ff43a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRX452305651.