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 0x393f53aa24bfde44220bb14fe5556d12753d969d57471c6e9a8ff05ef6871f52. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1171c65f-104f-4c5b-aa49-2dcd0f9205ae.json and https://artists.proofprofile.net/proofs/artist/1171c65f-104f-4c5b-aa49-2dcd0f9205ae.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 0x6e6ceddc100b7502d6f2a59296fabd2f6b43ad69d47eaf9faaf6b660b7e7e87d. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:51:47Z), 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/QZHN42350979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f760971ed0b6d85f182561f017fc3c0cd5ef4faa72e6904efd4fea446e9529. 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/QZMER2359205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4170170b7b15edfe19cde573fa8eba66f06e89aff957c9c387c7472e70efd34. 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/QZNWT2399286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe79999d4ff322ba642e2547c24ddf9e080aab71e605d0201f85f5fc5a6a7e5a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWFE2324892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456c91554714e01705f5b2cf2c41eca76ef9b1907b5b4dbf2837eac3d590bd48. 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/QZTB22419109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30184ee700a1ba2248a1079e566e2ef95239252da8ddd411e7366a50d0a6c874. 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/QZWFG2441746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998edf0dff1856c0676259eb92695c044694361fa67a6bd25d387d1e4fad6aee. 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/QZWFG2441747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fc82df60591c941c45fab77d24661aee6f14746993f796960234edcd8fe7f8. 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/QZWFP2447004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e98fcd64a50cfd80c36fb0d3373427368d12145479bc1eae18ef450c273ca78. 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/QZZ792454648.
Hulken Skinner Over Byen (MOB CANDY 2025)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3780e8ca1f7bd28fb41c863c828491f5d52b7a8e3f7dc86ddfe49ef964b70a1. 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/QZZ7T2410702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494ac720f058bd0d119d9f5922b24643a7eefba35e39224fb181474e6b43b304. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFZ42588684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb3c0168b26e85a8f9df31dee6b44b5ad6becc63348bf5b4fa786f2ddba497. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZK6K2519190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218fd274dcacbc0160bcf11e3617dd70a967f4f8f4a4962bc6d4fd1c0d4e6c1e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMEQ2555189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498b47794450faf8302b4d6a87975ce57ed840fbef3f6e372316ed077d6a647. 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/QZTB92551414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b34ccfc6e915e0fb1aa70166730a831ecffebe31b5752ed7dd3ddbf5f43583. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:45:03Z), 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/QZWFX2591541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb03f779635631254451e4c827f8e9375a3083a11c814d391cdaff9c64a06692. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QT3EX2588295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71508c31c66fc8ae7aa550607f761a7b444b763eea3c770c98e468720172f78. 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/QT3F82512593.