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 0x399e8210c068486c87eba0d63bd5bfbf7615595c733db5f218f7640e3a6ba310. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/833d9e3d-365c-4a36-8795-bb24798f4fe6.json and https://artists.proofprofile.net/proofs/artist/833d9e3d-365c-4a36-8795-bb24798f4fe6.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 0x3a580c51c555ce586900241f7a812981df8a61b511f109cde37e20a1c599629a. 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/TCACN1606893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8d258841899b50571cbdb96e6916ae94fbcac1e8fec69bc6600e8d87b04b12. 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/TCACK1507440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7fab56b5031e9500f4fbf8299ffb94a3b0bda1075724e192f3be4c5c0ba7cc. 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/TCACK1507444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfe73269bef4b0ce85ff6e4c43e63eee303e6b7916ffc19d1fcd6670571d387. 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/TCACJ1538709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9c182a90cea8c08e67fb98d1074c908523fcb64053151bcd0e2016f404d8d0. 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/TCACK1507447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd62bdb6b012a35f08cbf1bdb891e19d71abd5c03ef087a5d1d5adf96814bd9c. 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/TCACK1507448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08f6a1a43adf2a3e7b7a23dab843078bea22b943ef7690fed4cc655e28ef15f. 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/TCACK1507487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a33e5c24f00ed650c6baf40bc60f142de79321eb1eda1d0c3dfccf5e793df6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACJ1539388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804918920f35d11127b1bef22ece732cacecb07becdae7ad9ea14e5c226a5f05. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACJ1587774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd19c9a07553a4024836a32dc62a9ac089238e1a8cfdee211f2a9669b3e64277. 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/TCACK1507705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da6888bef30e1496b914872ad8706807bccea0c38e64334b6494627ef7bde9a. 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/TCACK1507717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975de3eb39932f9b4e48abec21e40cdb4008866a8216c1211afade831feb2eb8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TCACK1507719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21fcbda9487354ad911ea862b2f54f435ed636cd1d503ec6b0cf470c014add7. 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/TCACK1507720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc1c4005f9e84349dad2232609bae1ba5258c0deee0c4787ecb5014f9dc2330. 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/TCACJ1546452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2191ee4e3c3eb94fef8f58b6af1d0aec2f4cdf9acd9ea6254efd594c5ccb1913. 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/TCACJ1563348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef80de6e98e1c9bde8189b09dcafab9c414931e18f744bfb759a426bfc361f92. 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/TCACJ1558945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbba62ede768d4c92892ca9d171adf76f024a85337e04c8bcd301c640a2fee1b. 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/TCACL1624697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc764d9b9b32a3597520e6c65a29db9bacc5557bb653e993ee2c1f0717c13be0b. 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/TCACL1624702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d0f9600f6e55fb6359bec30e144c20c0f853e45185142c50e581391416e4fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACL1624693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104d5646ca8997979cb9221a4d4235207cfc310e914497cb666c074be9b40b46. 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/TCACL1504923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9c2c0c217f6469596ca70eacb4043b94f7fce27e7d22306eec6e4609cca447. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACL1624718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065b616b158bc777361c02f744af9a9fa79b3635c25e6da73c768537f6e02c0d. 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/TCACL1624707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c556a5c5d8fdc62e999db56226050a7aa21febfe7e7086c18d43d6da5583744. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACK1580507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09052e9dbdddb78ce04f013b3296e63d912bb284c994b6cd4d11d1f037a097af. 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/TCACL1624711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59bbd3bb6bfe2965028ab8ea78bd69695b79bea50154213702dfc1fe18d1051. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACL1624734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01268371354f6fe5c1748917a305ff4a31ff4e04cdadb14508788154d0350c2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCACL1624709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b7bdb1fc23219833263e0428cef52595f075fe557132e0a1287b384566d3d. 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/TCACM1632717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd23a9d09796f26eb351a72e46f8b0a306e72dd2119a5c03a4b0b5f61b6d8c6. 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/TCACM1667535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568e7e8f07dac53f624c9d67f45e9ce4e3f132df22bf6ad6d2665c5fd037bb86. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACM1658155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0379ed1db7f41478d7dd8fb09c4b5b88854678df1517b3716c9c4c356cb92a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACM1667539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8f3e3817260603fc6387bcdd7a2171c77dc6a9bb4bc82cdc2120309777ed36. 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/TCACM1667543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355b839ff6091cbfbe5b760a02960c5792ac967e54e601f83199146cea449d1c. 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/TCACM1667548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9fdfbf6164d51c424c2a0b5cd7263b9d8e1fabbbd94d52dd775f5eb5a4cfe9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACM1627700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346db8ee580cb727a3666ca9d859f29197775515c082d4b52df8fc054358c9a2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCACM1667573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94937dc82601ef7025a7c540c39e343fb096dacf0a9e3972384f568dc985cad. 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/TCACM1658188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ab572d45845701ee6aa832d46648b9b710554dfb844d8ea5d2a084b816ac63. 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/TCACM1667660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495a36a4e2369a3efe55cd24bfc8e907cf8030ee032a6f68462be85ee1685e1a. 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/TCACN1672554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d04466148387c88d0dd443fea99094b9a5f21854a9c183ce0b258c620efc39. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX38U2292638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16793a8193e37b5a338766d6f1f42fc009cb07a25372cb1aa6ef0b47a8107f5b. 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/GX38U2293522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b971151e51b2fd74c33e99365c0194bab49fa3fd1bd6fe52c1cb0a5b8846ab8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBSMU9657557.
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