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 0xce876e8931861d9b368a2e873a5a75082eb6ddd976b81006652af9e7645733e5. 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/2993a3db-c824-474b-bffd-4eef100f1632.json and https://artists.proofprofile.net/proofs/artist/2993a3db-c824-474b-bffd-4eef100f1632.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 0x58446900afe2520e298cbc5621ea86066559d63af1fad81f74a74368f1750911. 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/DELJ81505713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05aa9ac25b87dc60a37f7a74d50482ee54de04d85e7ec71210947e28a4f007b7. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DELJ81605929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0b868579129e8afa37e2e086bb28553dbcf204b96eea193d43faad8030ca16. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DELJ81605933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea61ae7a6eda2efc1dd48d247690dcb1f63d3e80af7acb5db042bd1fa33c29d. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/DELJ81605934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492eb6bef26eaf249bf7266f7cb20ba096a8c77c5e533c1f0ded2aea3b8a7c08. 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/DELJ81605935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ea7002530cfebe3c80674404d58f350077739f15c018797fcd18b504a4e5fca. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/DELJ81759989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ac4645ba3a2ab8c92f64cb0863c97a4e1887249ed0de99d8ca765ebe63b94. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DEXK81800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6330cfbf296f42d1a333b1f2cee6951fa42d33de1b631b0c77a2c46e17e09cb0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEXK81800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4755c409cef759919ae123d55648d55e7db76288a4431a93e3e1eda5ab7fce. 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/DEXK81800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac32f0e71619c0208ddd42e6ba69c15877675dc8c2d23b01838bf04a2a135a7. 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/DEXK81800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba19af465c257036d860a2d31e467deb785d67838a87950fa57e03b000143e8a. 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/DEXK81800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640a53a414164b63abaf464b49d937ade023f8d53f50d0d0d26b2b3cc55ba261. 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/DEXK81800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5cd325f544b080b25a26844573b6300705cf19a5e9ad2b77d3dc8a7b4ba695. 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/DEXK81800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2840f9152e4dab7c50c62b4613b8ca6c4cf49598f4e68122ab0a87c4710bb066. 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/DEXK81800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4876ec7e0cd797d4b5f12d7466ef62f4ffa3168d718a3f12c4a722282ccdb5da. 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/DEXK81800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6bdb55188a4af789249c9291c38c81b901fe3c87a3bbd43bec5b8cd48ce8fe. 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/DEXK81800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e8523bfa84070de3ca88b44f6fc14390cbe0086b3ed092705c6c4edca7ac3a. 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/DEXK81800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72cb3bad58633afb5cfe9a36ed45daac78231f1634b6565d842661b097fac52. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:04:07Z), 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/DEXK81900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf126a2eacdd546c750f1606c010be31bc703e71becfee06eab4ed1ae354d0e31. 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/DEXK81900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea96e1b7bc14a924a6c447d88d461f78934b98c5cce9e06a13678fe4380d305. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEXK81900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aa0cf91f54ccf80330e57a9b47400f8d105d1bf6cbf3145599d74920ae6069. 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/DEXK81900036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8aa9fa8f12a7aa930505a4cb2045abf3792afd1d79b607a17f7b741b57d421. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:23:45Z), 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/DEXK82000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f845b1ebac1be1a82b8bb0e952dca0cef1721795a8f47d44e2772a5e0aec42. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/DEXK82000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5da641c8825151ce7479e2497219ad8f4830e2f0ce4903614c94d74aa5d7e09. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEXK82100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2784c6b4cd467ce9538b952ee2999222871f851ac2f7834b9cb11b976ef29846. 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/DEXK82100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9ca5db28b12c1260d2b41b8a2a37f60627d1e6813e94af41b4c15036c6fa8. 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/DEXK82100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8166d1a13bb24e420fbc7d36dd9a7b25df7695c0cd1a871abd1eb206e1e448. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEXK82100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd2cae4ef88905dcc664371995b7bdfa42f5fb8cb87c0302f6aa7c7999837a4. 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/DEXK82100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70d665180b7853c6029c1cd9bcc111d536bd3b027cd8e279ea0252bba651847. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEXK82100024.
Green Flags (Vielleicht nennt man sowas Liebe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0965f833072955ef0bb63969d9b6082570d34ce1fa07139df9f40d509103c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:35:15Z), 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/DEXK82200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6188c8010e39fe9e42685b73fdb388c2e58260dc28206372ed0acc630c4ce6aa. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/DEXK82200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc15404b14e94e86880ff82d1c60cf792ca7c3f4674e6a21dfcb6dbf1d67c1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEXK82200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987e9e3afd79d21d4945673dd0fbfa8d70cd03c551687444dc800b7b3def1b82. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEXK82300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4037eb14e3d2a69a450cdbcc203a6aced41ee41d1be0c026016ebebccc93898. 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/DEXK82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6564510e302f2bda11e6683b661b14de194c2ab38be4262d9d952f4621a55d9f. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/DEXK82400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4037eb14e3d2a69a450cdbcc203a6aced41ee41d1be0c026016ebebccc93898. 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/DEXK82400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fe0135d1592abe40d92fe76bad0fde0589099bc5d78f4070049e73683326fc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEXK82500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4a2100ab789c71b21bd72c3601be2b3b24fcdf7ae2089dc0ccf97dce849b12. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEXK82500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d8f6ac83e89ac339d9925d19ab7e46f80340574aa0b36048672a43e99df7cb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DEXK82500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c9a8eeb15952ad9183f9ff48624e5acf0c932e76bd3e3088cc9990a1bcda8f. 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/DEXK81900014.