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 0x64a780f6d68e4b313c21274b5c1001d84fbbcd94340a86434c6567b9cd1259ce. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5b5ed570-2922-4510-8804-b56d273bf0f5.json and https://artists.proofprofile.net/proofs/artist/5b5ed570-2922-4510-8804-b56d273bf0f5.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 0x9d3ad022ed24d4ff3e5380e699fa6f98cfb44dbb201d56c7d390c573f2edd18f. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/ILTON2406415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85528181d6b8c82b8e0689b467bc07cd9b6255fc4dab00477511da0466cfeceb. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ILTON2503099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd422c053da873c4d0d7c35c6600169c770460ee16d27270ee282937c13f59511. 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/ILTON2503093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0463d93ff1fc169c8ec1811722c5b2a9dd6c3a0c5690dbe247d75457de9cc438. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ILTON2503095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803b83c4fa0889ba77c80f2baae18dffd91a67fb392c1b40d1a485340893cbc8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:08:52Z), 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/ILTON2503096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e58210aa0206acaed4b9739627372daf95977500b14a72d0b27d876a4de3c70. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ILTON2503097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8b1fc55b1199ead0452b6f1024869c7870ef5c32eeec80ee6900463a22b8df. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ILTON2503098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50158dfa607b82d9e55de9f739e0aed1425c3a4ca9e8bb7e5be650c69c7c696. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:52:15Z), 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/ILTON2503100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53bde35e99221b3404e0fe5681b4aab9ba909af55f213b347122e27adc230d6. 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/ILTON2503101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcacfa66dd74066eae8dcac29a3130eb53d3eeda5652228f68e7d5ac84b0dd0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ILTON2503102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1806bce81f8e3bdf4dade80ad4eeef4c0d36f5c7908da164a8db615febaea810. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ILTON2503103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cae5a5af355f6fce43d5623b7fcb4d704d945dadc40fbc29dc94e9c617850e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ILTON2503104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53d0c9cbb74e5233793ef18a88a515767cd33609ca7bdf5ebdc23999bb6f4d1. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/ILTON2503105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d2942b76e96354f88fcfccf4c014e74f2b62f5f0431a7944637daa5e6a9213. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:58:00Z), 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/ILTON2503106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f174de1a1d9c18a311861adf37dc00f91b6a99e1a2ce98a8b1f8f030f68c5af. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ILTON2506392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f57ee12df9cdfd17517fd5b4d09d167fb5cb1ab143bbf73d08a30e262eb2b17. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ILTON2506393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ded2d692359dd8ac8983ef8b37c151f24d7673bc40b441b9bedfdb85839132. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ILTON2506394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e605afb7af1108908b9be9ac96a024d5db347d29e5396e43263135b56c125e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ILTON2506395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bd4226e55de13a63635f3b20c0107d996c85239b1290e9ea8be19cc134a0dd. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ILTON2506396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4240a7333d13ec50603ae6ab8b941d15f96d92b7453c8920ddc32a87352df49c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ILTON2506397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1784be102b85cb7578f6d18a1adeea79615f3515d86948342be6e3911eac00e7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ILTON2506399.