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 0xd1ae3b8bff5b9757d1bd47fbee3df06a0da80242e06dff839ccbf1a144d0c932. 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/982ea59c-fcb1-4a5a-a607-a301716b26ba.json and https://artists.proofprofile.net/proofs/artist/982ea59c-fcb1-4a5a-a607-a301716b26ba.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 0x84c459a3feddfd383e3e64321b9cf7b897edeba57183a6f4946f4f7b945c45d6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SIC039900701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb853ed7bf9a963e0468b9be1e89cd1ec8edd5b06ed0b6ef23a5686cff76de7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SIC039900704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38fceb926a42a8e29d6d979ff6dc05750f02b48228381dab560bcc226b39c54. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SIC039900709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14470e29aba0a193224d01a84fcab761283b84580087d1ffa5033a8af7442b7. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T19:02:32Z), 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/SIC039900718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb98cccdfd0207a9e01110b18321ddd4b8b3ab7ca59857c495f2861c4dcd8ba7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SIC039900804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ff8f81935ad2de15d962dc308fc6c477fc48f7089cb1a9c655f5ec1db578ae. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SIC039900812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fe4377ef3e90e39a84725f88e21406aa62536f430b107e92d3aed706236a4e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:05Z), 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/SIC039900813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96be7214b7de9ddea7818c660536e0bce326e062e5c6b94f193f30a476bdd20a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SIA941101354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5046b8bec5ef66dbe3384541ac15c3896184eee5a5c612a98dfc93270c8498. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SIA941101547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29227b18fbcf3c41037ccbd319f1309cd751e3c6b6cef0ec5b2bf155efc90003. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SIA941101533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5462e5c4f8d76f7c540df3e441ccdaedeb6ea295497606d41cd5c856f4e995. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SIA941101931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d16c44668543d3b7643412f0427fd69d3cd9a69e7de0faeb62214bce5ef9905. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SIA941101937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd47f9f672ae0ba98239f5ee6201c3da1ba789d111795d5a5cfb41340522f65. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/SIA941101567.
SREČNO, MLADA SLOVENIJA / TO SMO MI PRIJATELJI
OD SANJAVE MURE PREKO GORA DO MODREGA MORJA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebd17ba1ec9af9760241d6cc23d783d6b4ed002ab975c2adc88cd6d504c71f5. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/SIA941101635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff98f896df92c49219c2a0582cec87b3e4d3097e5121f10a6d32657cd4960d9d. 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/SIA941101642.