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 0x26295a76e22fa3358ee89ffe7814eb11ba01358971470c04ea9403ed9215e2b2. 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/c124336b-42ac-40ac-9315-59544e431be1.json and https://artists.proofprofile.net/proofs/artist/c124336b-42ac-40ac-9315-59544e431be1.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 0x6bfc0b81981861d5cdf8d1b5619310dc54b23145c5ce169e165a8dac718f8b66. 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/USA2P1436623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee510d3adbf01c2c38013ef3becb2e4d0952908ba9a430a4e26457bfd95536c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA2P1436627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406def5f70ae37d40e56f257f39ffc8110e20059f74b95f8b0ad229eaf6e8c2c. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:58:14Z), 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/USA2P1436629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea1272d20a885804ad649ac71abcd0c146266b88b3a969dd7f3802070a72bf4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:06Z), 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/TCACH1571620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77ab5917a5d85af4d6abaa4e2f9ecdf56b01080b17caca75cb124760c3c64c9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:33Z), 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/TCACH1571627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016d4c50599929167b328007ac7a1eb80394b8c6412330b45af1734d6cf9dbb4. 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/TCACH1571628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e1ed7b38b7c217921169ee29da0cd79db1807223b7446d0cf843d7c58e8dea. 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/TCADB1781029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814885b277a2d8c4937ad2db845d0cf00e05dd01cdd861ae27238f1d923d7c17. 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/TCADB1781032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9524d510356db3f5a03ef82d6de396fc7ffb178059901707a5c2bbf06d9d1c5. 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/TCAEI1922560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6161ef967e4e6e2d337ec561934ded28e90a6d12bd264d387f31669a4ca6ce. 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/AUMEV2013831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4447e8ee4728895fd235fdedb3b4b3c1171da120a9373aa5ac1da8b6659823. 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/AUMEV2017840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b1e4622aca249fc44e944b5b274f52d1ec1a542e30f95854482d1ce6d93a6c. 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/AUMEV2016018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8cfebf5989aba51933100df5439ac31862fbb697e9276caecf607af94070c2. 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/AUMEV2017842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96810a6a8e9077d3ed3ab53c25b0d74558ea0992589b2268377333453676e81. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/AUMEV2017843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df5ab1b0d0835647b029b27b45dbc426a389973da4fcd372a23a427f7874821. 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/AUMEV2017844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aa9bfa39b01cc8c5aa01f9037b32ad65445a51c4cf222f6418801a51363b5c. 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/AUMEV2012120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8345da40be35a96dc4c8fe19cd3f38727c41e1de9a608df71b971201d5b07c5. 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/AUMEV2017847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6161ef967e4e6e2d337ec561934ded28e90a6d12bd264d387f31669a4ca6ce. 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/AUMEV2013831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5546045aee743caf1c0939f84089a76ff7716c2b9c15db3d6349936250d4d2. 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/AUMEV2017849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba013ea33796b7b0d1ea4f6f23a3943e694c3b8ad755a4ffceef8cf6469c81a4. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:42:54Z), 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/AUMEV2136269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a279be74d8def57362c9404dd610970c7d1d1f815f1508b71a5b4f64993229. 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/US7CV2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd521cee8cdda255a4d6ad2201a964c7dbcd6c50d4eb01b611067b98b1467102. 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/USLS52121605.