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 0x742c63c3cc4d318f85ed5112e59c5eb6be14a0b4392c3720b8d1176140be57d6. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9e590c9f-f4da-466f-8dde-20551dc2aed4.json and https://artists.proofprofile.net/proofs/artist/9e590c9f-f4da-466f-8dde-20551dc2aed4.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 0x11ca2b690ae4ff27069ac5eaa0d98bca3ca1a93b984f9facd9c551ed2df7db25. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZMEN2157709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd765621fa6816f62b2c6ac68219bb0ba2552ca3750ab914a183b3ddc9ea59835. 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/QZHN62276728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cf605418b7adcc4a3447c547cf3bbaa91a4e40c2c081abc8901a8ac6decee5. 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/QZTBA2311578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2deb4ca42f20886ef101030eed71ea750c5d0626d4e45ad37be71cda8593be13. 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/QZTB42452364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db4fd90ac2af18169eb9336228a205f7787059d710ee620472b0eafb720312b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZRP42421091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83479e5d0ef4e502b843550fbd1f87bdfffc6568d169692a29680acf55b27aaf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZK6G2431133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ef4cbd242689f54ca2eb8c1ec13c4a9743fa139aa2f02ad82c6d009dc6131d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHNC2361327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ad67b14bc6fc46ead2ece3787673cf7fd2f445bb3cdbd9a486c99ceddedddb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZK6L2383801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9481ee18525c3c9f074355f110df09f7a8354ed83256e899fa9c5ab70e4e1d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZK6M2356852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9481ee18525c3c9f074355f110df09f7a8354ed83256e899fa9c5ab70e4e1d. 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/QZK6M2356852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ef4cbd242689f54ca2eb8c1ec13c4a9743fa139aa2f02ad82c6d009dc6131d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHNC2361327.
like my favorite liquor u make me wanna sing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ca2b690ae4ff27069ac5eaa0d98bca3ca1a93b984f9facd9c551ed2df7db25. 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/QZMEN2157709.
A Tribute to Blink 182: Fund Music, Fight Cancer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea795396a1462e88e53a7584eea15abda3bc0da8a70447000988cef5a3476ff. 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/USHTA2300668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea8a6de61e4b186be3b2c64c5922c8fad18433e35e2fb518f91107ead319448. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USHTA2300669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86298f76085b3addfdf2976269d054f5470da84d7fec8aabf6e97aa12ce71fb9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHTA2300670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931b550cd3856b9652db4353622910b160bdbb332d283c6288e6c9f8e1789b7e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHTA2300671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f783f4046389d745885d003b44952fa611339073ca2e0e05cde72afccfce8c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHTA2300673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919371422cc46ad0897ebcf8cda6bbfcae685eb4be6f4206c5f93add21ba2787. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHTA2300677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb22248ec40365bcb808b29b1ead5b6105d4af7ce1e852a5119938c397dc2483. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHTA2300681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc812bbb47419a9bc92ea530ee36c4825dc1220844bf50e039c739f71ce46f2b5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHTA2300684.