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 0x6851ca88ba7f7e1b41d087bc1ef17012decf0abc33a7b2b35a96ccdb27d7dd08. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/21a9bb12-6a77-4800-b473-38c897c6f791.json and https://artists.proofprofile.net/proofs/artist/21a9bb12-6a77-4800-b473-38c897c6f791.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 0x94db4c7c102887ed508ed6839e576a332a421a1baa8f8371491a8fc6f5c0b965. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMB622200373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb66bdc7b483be7dabef02fa6a233d1419a42b5f21448367188af9aa3d03818. 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/QMB622200374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e54a9856084368e91d31f655fb86952a769c70246373a44f2f15e0a3400599b. 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/QMB622200377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b92af63d6ddd0ad793d03f0d570f9d7add725b0def9bd204714716757b891ad. 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/QMB622200371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1da903f12b2710335c73fe53574e3fe7c3cee634520e40da4daf543dddcac60. 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/QMB622200381.
Bridging Gaps: Portraits of Rising Female Artists [UK Edition]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc880a08e2a68202c3aeb61dda7444b440f4dacd9c61d6bee4fb63929769dd0. 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/GBPVV2204601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547f123c79837a60c965dd644eadfab9ffc5e44a181ad12c60de64e0dd68bc60. 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/SE6SA2015974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbccafbf3c6319b2b9b34b193aac6625d1675f7ba398e30fbb0df5f253b851a. 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/TCAHD2304311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769d08a11999f47026660539ae41ada0be2b2d6f9cf17a63e3d680bb14e1dac. 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/US23A1545996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3100b5eff19244760a53baa52c5e7f5864fed04fb26e068e47eb6ba2c6c9422d. 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/QZDA42414119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e72417c640e28b54c98613cf0f6af4a20944146f0a84081a0647d94588005d. 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/QZFZ32434532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf569af73511ac4a67f643151d8e38b65aab851a66019939dfdb56a5b0624d2a3. 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/QZES92404425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ad4d5d6456119f9ac89ba008fd6ce3a312c3fffbef532777ef02a45891f9d. 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/QM24S2300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a394a179de9bb4b44a61b3003bfce519903186c9dd294a5ff8dfa8f9956fc4c. 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/GX3Q92145039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c8dcaacdd90e17cfcfc1a7b21bc9171cf1658a1951bf2dc25cbc7509ddd98. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QM24S2001736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bc62efeb9cfdd7c6b8a76ae551af696357641a5dbd5a842639edb183d0d0d8. 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/QMEZE1976817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bc62efeb9cfdd7c6b8a76ae551af696357641a5dbd5a842639edb183d0d0d8. 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/QMEZE1976817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c39fb324c36b7fd6af25035d3c8b1268eb69df8922701eb6d4b756f5140fcab. 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/GBX721800290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf80d3415ace989c10fb0b311d055dd5f234c7e61f72841caa6c311a37218c0. 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/QM24S1925096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7fd4526da104c76b9b85fd3e9aa534de88a7d49cc63cfa3812ca6aa281a6d4. 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/QM24S1925097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb425e07e794c68852dce6d511eeb4df0b51f90ec2f1288eceb3dc6e85efffc1. 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/QM24S1925098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7370a07c43b44840486376f62aa279dfd2a2a36ec480929d49e979cf6aab3a8. 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/QM24S1925099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7288ec96e3a0fdf47daf5023fb4e8d392a3c197a5f123f358c8600fdae70a72. 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/QM24S1925100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3759bec51dfd8644024e7241887fe3dfa4207cfc22f90f15e77e37a1f4ebfe. 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/QM24S1925101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b815fbba0b09802ba98898069a8540dab6db014ee412792d07e7411a64db76. 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/DEXC81900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b0f7328168fbc3608def7afd6a508b5e1d52ebde8519aa1c4ac2788b1e269b. 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/GBENL1802182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd2ce79bdb43b2dd76196bb7ce1837542590d1b6b59766907322df3f1b00bee. 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/GBENL0182191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8672ac22fb17690432f09b1d880f7b70a57f79c4610cbf29c5e71bf78630b427. 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/GBENL0182192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc350fca9c44c4e4da869bc9b8e25ae82ea8bcc439bb33f2725bddf72e67000b. 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/GBENL0182193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe765478bbccc8a0bab7db11bbb97ab547f91851f610951fbf9fd86ca4bb53. 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/GB5P51900274.