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 0x34a464c00e52414dfafe477ec123a867e51ccfcd193092a331ad79101538afaa. 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/f5c823eb-6ead-4031-b5e8-26902703e0c4.json and https://artists.proofprofile.net/proofs/artist/f5c823eb-6ead-4031-b5e8-26902703e0c4.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 0xa7f3cc4f7c58389b76c949a5070a2b74ad158bd774d7fa97c16b69bf18997cf9. 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/FXQ952300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc20f8a5994ef3f8ef52e261db82c2304defb3107d02bf05200c29196670ccb0. 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/FXQ952300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbd3a5db53db5d6f13e9864fc87e94de5ee5c15719a238d2c36c64b02f93733. 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/FXQ952300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3c19b6fc6dccf8bc2590bef9a9a4ddfcbe08b36e5222466598f1ebb04aeeea. 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/FXQ952200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d75d3dd8d696d1875535a27ed61f1b92b71cdfcbc75ef17a3730fcf8de6ce60. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FXQ952100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58746e53846e97a834ef39de50cc9342e2f84323e9d73c8838204fb37e8aa945. 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/FR9W12101048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b3ac11e83f66a1b9dcf695ff10c8063fe087d2764ab4dc3c88dcec31d44bb5. 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/FR9W12035008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8ed8b7bb176931ff80ec7d9fef356d9f63bfb81996613dfd061d68762e05ad. 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/CA5KR1976339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6862e4c97031fc570c6389dc424bd2bdb2c4ef9114d481b546ac07b0b58db7a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR1831768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x439064d375ea313994a1d079ecf95f0fb37906c88118f0a977119b7e54eb7ce9. 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/CA5KR1831722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9908f61189a79432f7cf21bc700c3c1ebfbf92ff28445bc4eb5281fcf65d4cb. 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/CA5KR1717691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a0c0c4a0bbb3d514bb56059a6e06367dfaf2a89d284466ca5e6c89e01f24df. 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/CA5KR1711809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2054cba927ccf36f690b256a8f1e8739a7323b8b67b85aae3c28cf5dbc44afbe. 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/QZHN52022547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d56bd86908f2e7fbe76afe0ba0c578e03d3703b8746772cdc8e377db3b5423. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN32011861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3811b43682d8b7cde3c7c0a953b997c1057be00bd244a141e483f4a58c8caa4b. 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/QZHN52022548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a62fce96534b25b23b7a6cdbff0afdb41ff76c1a0385d306dde283622f753e. 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/QZHN52022549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56675603c893f777fa78d9e7cf25f8d834801498ba4928f521763e0a90e4156. 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/QZHN52022550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dc4d7a115000be1b7157887ed64dbc5851a0e17c93aa217f8c934d0d20fd85. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6P2047973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565ec44095b7706eeed6051197525177003f1d96b92eda6e3d20842f31f337bd. 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/QZK6L2063136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6392aa74e53f87d8a54e7858c5be21f21fbca14df5f702c4297301a3b875cc3. 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/QZK6L2063137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e01dcf6881f26f2aeedfb7d277e8aa36bce40383371f13bdd404cc2014eb77f. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZK6L2063138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff17b8895d26689b32980610bb396deca4116cb9e5e941280891fe273dd65979. 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/QZK6L2063140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1fad7bf78d5dc7811cfa636621bdf40a06df66d186c40ea551afdff6ca96e2. 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/ITXDW1600354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8112dbda46669ac694f376a119b075b38f4d0155a456aa143e16825c9bff76. 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/ITXDW1600383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15f2037c1695dc17fca6fb8936e7f9ad2b90bd206c5f802f252436bc9df3b8f. 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/ITXDW1600384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a4df95ae336eec99a1bbedb34e5656514bb2ab65fad7225d934c0a053b8967. 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/ITXDW1600385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5391dffa043c10d3aba7b640b29ee040c4f0e7cc932753a5aec718ad9a3f1a. 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/ITXDW1600360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab208da7980c018e3063cfd7df096d682096683b4c4900cac75e158975b05c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITXDW1600361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42bce5143f250d100c4a725182a810820e67c7009a52aefe463a41263a4b2bb. 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/ITXDW1600363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6569083c66b44e2be0371f92a76190972b39c7198e55a7d016c6542452af1445. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:26:18Z), 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/ITXDW2000896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daf5a99d73489b7e4319e98c37016a42e2c3b8436405f2eb14c38ef0aee1565. 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/ITXDW2000897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d1ef490960f807dd63ed84384ec4175816dd031ed1854377ecc1d4e1be81c4. 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/ITXDW2000898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0131aaeb1a29bf190c98fe905c6655c5454145cc1e8c50b85dcc46ca9d4941e. 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/ITXDW2000899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4ed2acec85037350fb91df44ce0602e6e4836b4419d1d4033e0f69441e8b5b. 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/FR9W12113138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fcdc63870aef2441456d6a6d99e8c1f2c8c5a61e80d935da669b1d7bec0cb7. 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/FR9W12436065.