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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a85dd802714282e9ea9f64cf6fdff0f013c6ae1c3e1305aef0ee40bd6daacf8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7081e7d1-ff37-4ae1-8348-15e0bcd23480.json and https://artists.proofprofile.net/proofs/artist/7081e7d1-ff37-4ae1-8348-15e0bcd23480.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0f123b9b97c5d1e8fb97849458bb5c47ab00d3f98b60cb61c74b562da05404. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZZ792522288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36629013e605d3e2cf6dfba2403a61fb7feb121ed8d35fd0a75d2edab6f49700. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7N2580258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30967f8f9b3e8b86d6d01e215f2fa517725897777044fff71ec673c1f6d437d1. 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/QZZ7N2580260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d550bf01c766dcbdc25767add783dee4d72604ea4427bf1826abefdd793611. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZZ7N2580261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b59256a6520089a25ad13382bfad95ea61bbde3315566ea4aba6462e4e3fea. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZZ7N2580262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17315dc9b8869b1cd3845cb7045a811e5b61a61fe881dd2341ccdaef0cd7fb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZZ7T2542750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec629a359f08c71299840be593c0908a4858bab5f113889f669fb213cabbd041. 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/QZZ7T2542758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebe943bbf9a04936d04d79791bb6eeb63865a669fcc3da703af722fefdb025e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7X2527940.
So fühl ich mich Lebendig (Duett Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea4cf41ee96bd1350059b89c967aed2fb6de5e6fcfbb6cbfb7ecc66be72ddc1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3EZ2513555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc49b11712c6e8a360f84dd9f73977e2af36ea1e60cae0cfee6729d5982d1e5c. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QT3F42558520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a6d2abd6badbdd1ea88024a230201fd933ea5d0df1266235e75293c9d705a1. 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/QT3F42556820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776df5f2d12c356e2cf94752f067aa4f16cb9e67aba1a6e8c2b58953cf853c65. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QT3F42558549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb88da56f68e46f1ccdaa9003add9e53477694d2e4f2af19c413cf733e01583d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QT3F92572031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899157b3191d616b9c991f35e9a0ded2a1a5cffad3e4b850711e7c1275b88474. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QT3FE2550927.