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 0xcdbcce40d4183275fe8e9f61e3a400a274a2719203ead13de822bc733a555cf8. 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/c3b53869-36a2-4722-94ef-cf1d9021cab0.json and https://artists.proofprofile.net/proofs/artist/c3b53869-36a2-4722-94ef-cf1d9021cab0.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 0x9e384e758d9c04ac4ad46d1ae47df6d9bc450276fbce18c425cfb7fce1e13fd1. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZAPG1831633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fb46fa9d64b347ca478f707cedf5d4f6ea2e8669d4274138a5017b642ea590. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZARB1801270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4abe0d436e0f763282b8977c3f41a9142bca7d970cce5e6a6cd8c416ebf6e1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA71813037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97dd6bb93e41bba7c244c049a263112503ad764b588138932d287e8ee91d1d8d. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZES61826930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405dc0c37d23b859ae39d8325b752ede141acf8ffa8a02562b746914970165e. 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/QZES51998592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3583b1d74079cb5cccd6703d87697da41c9d2406e0d5fef563d01b7572092d2d. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:09Z), 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/QZMZ92038533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2c77fc82ecff2494bcf86392724cbf8ded878f2b8691919713bc297a8d5590. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNJV2058059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1017bc518e8fd457277483de8b24bbc3e5d736ae2f226f4bea8558623711d7b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNJV2058064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af26c2356b2e5a956431a3d7bbc895ef25073bcb0b20baaf8afeb5d19542a50. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZHZ32122027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7aa0fc9285e2cde3042762b7eb67e049d565789a588fff79c950d7226d0f898. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNJV2129183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865b8a7eb454cd3678f1523cb40aa3611c6945ddcd96da703276335d00deba81. 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/QZHZ52219246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af26c2356b2e5a956431a3d7bbc895ef25073bcb0b20baaf8afeb5d19542a50. 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/QZHZ32122027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f2c327f9021d2dc3d9d348e9bbd22d0505d521cf7f45cddd3e22c07d352842. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:59Z), 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/QZHZ52145317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe6a4736e5a10c1e5bd2c488253835c70fd3b1ed7a336a40c89cfd138bac3a2. 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/QZMZ92266547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130c29e0f3c2abd423b32e9ce846ac41415cf07df357df396979f8680fcb6789. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNJX2182832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8069033afec2b4e11dbfe47cd8e0ff8111b004ed2ae3ef7aa327403ebbfc7b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNJW2272959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f3168c5368e2f8938e9297add9e7d362b4ded4c7b7fca472685d06b123540a. 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/QZNJZ2287635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ae4b9c2a901c779e4d18f2ee40dda33045370de9395020fa7620b5980817cd. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZAKB2324803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdf2e460094b0a1d336de2814ee750228ba6aee7b097d949e0dc318880df159. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZAKB2343611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e97be3451ba435c8a619b36f6c8a8fa5361c63926fb1b202ec6afeb6927fa73. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:40:01Z), 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/QZAKB2347869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175443e8ce163526ff1ea6b7b015a7a207e5006ad95e3f227c76c0ccf263e155. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZAKB2353939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4603dbb4e6e3f7174e10987311128ccad2a380b50aa0ca009a16ea95e376cda. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:00:46Z), 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/QZAKB2353940.