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 0xc0dbb89e212c29c7273cafc1411175a058ec857816fd5a54d896eee1a992ded8. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1e4cb12d-9255-4f54-9556-2bfadaa5df80.json and https://artists.proofprofile.net/proofs/artist/1e4cb12d-9255-4f54-9556-2bfadaa5df80.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 0x381bb21181d28d0609b1f88950437d1e1803517eabaacf1b64ec905ebf55d3d3. 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/JPW462500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddb6c236bfd09a2a823e2cf9225702ffbaa70d4d4ab20c616a9c6ceb24b449f. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPW462500049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096a08f8ad1c470120480e4ad4bb3ef3fcd5e34c986ff923b3cd37aa020bef9c. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/JPW462500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05f3c641999e4c4913eeb7411314f97d9edd7a5e23734ff667631588728347b. 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/JPW462500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811ffdd27b08b4c0483566be8cb809aadf4a2212b4ad3e7a8cced6ae96d64f52. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPW462500058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d90cf478279535afa4d0099c5159fcfc370c80c4a2655e726297b45904006. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPW462500059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89827d35aa445b009565535691802a3e24ee7988b012a02fb2f0ba2002ff9e16. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPW462500062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e347c410c5ba3580d874301dbcdd4751bb1c5825b68851deed215b1578b20c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPW462500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a4f6e7fe9c7dd0b4f4f010c30260ccbf079c5a25e1664cb1918efbe2e505ec. 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/JPW462510964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210d859fd6e1cbf34f840fca8215a64f32eb264268c9a2eb05839400a3261d48. 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/JPW462510967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2029fff5cdd177b205b215c53d4105adafeb76f78c306d3ec4b9c86f6e4630. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPW462510968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5746f66d10d1987bbecaf9c5684aa70abf533cb81bf6269d5167142a094e3eb2. 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/JPW462510969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0de8c17d9e010d8e8a4a294fb3974101c2496f3c8c4d0f62af3a465a9804dc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPW462516500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a4caa4060a0cd33c3269c9e1368c80f7e74984ad463c6015dca083a70c5368. 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/JPW462516501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04bae68382d2d1e67308fd073b6f4622cd9f6d2538ff3988478f0d2f9641eeef. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPW462516503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f42e8a007ac66558d700ba589b05be7d017d9a5b5324fd907adc18af96e7c7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:43:28Z), 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/JPW462553137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a345dd111fb9dc8be4b7d6be4da73d9d25ff32f9f3636cedb1c252c53a49301. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:24Z), 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/JPW462553138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3905fb7c706cd7caf2e9dcd8452a64dc3c629d069412b9f6c2aae6e7d93f68. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:07:39Z), 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/JPW462566538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb32388f7a0240dc15c13d00f921ef1edb640a3a96ec2416c8701404a4cc5088. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:24Z), 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/JPW462566539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592470d95e445a656fbae10d301219955751c07662ff30133966e8f4af5e829. 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/JPW462566540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c35097f1129036ad766d7cac6b1f749e6b3702bf4fe7377d88122ce77ad1060. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPW462566541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a08a28264c6eb009fb6687c9c36228af6be6c2623ccd51aae8f3531f0dc2a6. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPW462566542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ffdb44584b72a207e7490356f36b025a0dc0ca1ae8bb1486b25dd18f424b55. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:03:39Z), 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/JPW462566543.