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 0x0c26cd379f25a31ee95b8d5a772b7bd4ddc0c2263fca85b7c8a58cb868fa39ee. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/73f3b4f1-2fd8-4234-a4e4-6bdc8e552571.json and https://artists.proofprofile.net/proofs/artist/73f3b4f1-2fd8-4234-a4e4-6bdc8e552571.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 0xfe174ade17f1d0307dda02272cf178c74612731586c40a1bfdb7de533617903e. 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/QMBZ92178266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca9efc948c11fec1bcb64158bf4dbbb9c1a8746daab3834efb7c30d5937e9f. 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/QMFME2169285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79090b6c7048ae8e4e1e5094417972e03fd8f35e98cce6312172e4db7afb0486. 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/QM7282330011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1f96dbd1cad48799f3c1c8c3b9a684ee7b869fbb4bf03c7d170e296ad3d82. 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/QM4TW2340496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afa093c388be132e3215da69df43ab617cedd22a68bc27546efa82348c1c000. 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/QM7282329878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da04f2add7fc7dc46da4a0e09c7baeeea34814b000aa18485a14198198bc1a2. 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/QM4TW2340602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b1f96dbd1cad48799f3c1c8c3b9a684ee7b869fbb4bf03c7d170e296ad3d82. 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/QM4TW2340496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc6ecba1d30f37e07bd3d0092b91fbcd30c8a2acb18eba5a000e2fdce799e86. 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/QM4TX2274324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbafeecc63ea25c44118476fa09b77c4edb3224efc39038fc71c0fafad7f51daf. 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/QMDA72182241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71d3bfd29d36debdd35732b66cd6791eca6820b6c944b9295ca72bf5d0be87. 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/QM6MZ2172903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71d3bfd29d36debdd35732b66cd6791eca6820b6c944b9295ca72bf5d0be87. 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/QM6MZ2172903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b9f1e1ac426482b3b756e2ce19a10c985e171b9e0ad903a02fa5beab941e1b. 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/QMBZ92178267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca9efc948c11fec1bcb64158bf4dbbb9c1a8746daab3834efb7c30d5937e9f. 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/QMFME2169285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66572d1aa9255a98acfc8f98fcffe9c7d614ed3cd89b5e76b726e62e8d38bf. 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/QMFME2169286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ca9efc948c11fec1bcb64158bf4dbbb9c1a8746daab3834efb7c30d5937e9f. 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/QMFME2169285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08a879f48e81a610aee6f6f912227968994c797295405db1478bae1196fe3c. 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/QMFMF2013217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf131bc06cb7b0b714a1c81d8f00016c5a4f9fecbdbba2115eda5a2ecb922abb. 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/QM6N22163572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf4363487794bd06440c0971432fead798b53b33f6a97128a312607fb505a64. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6N22145197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a6da77c987813757578958854203d5d56db7342a0e71b227efadc85177778c. 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/QM6MZ2172618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ea9049f58283654cbd1599c00a6c6620fe56be75d568860ff1c747f450bb1. 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/QM4TX2135486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a6da77c987813757578958854203d5d56db7342a0e71b227efadc85177778c. 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/QM6MZ2172618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5ea9049f58283654cbd1599c00a6c6620fe56be75d568860ff1c747f450bb1. 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/QM4TX2135486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe242700bf579e9477736d28270da94691ec0b45c93a2c899defbc24323a075c. 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/QM4TW2146813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef08a879f48e81a610aee6f6f912227968994c797295405db1478bae1196fe3c. 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/QMFMF2013217.