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 0x946b9c55c61ba8eb49fc4abf7ae2250c990c9f2d5cc35baf383bc2e34818a7a6. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/210d8963-4c50-413b-bd3e-06dfc54e05bb.json and https://artists.proofprofile.net/proofs/artist/210d8963-4c50-413b-bd3e-06dfc54e05bb.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 0x94c8f49fcae173d48665053dac4dc006c7f0899275d42fd47860e506f999e7f0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IEAOR0700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944552a55de186572937022cf605ff30a9ce281897c1dd20c65d43b4d90f8a7. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:28Z), 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/IEAOR0700048.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3adbd3e112040c5fea3913c042e060a848f70a236cee7add296a47daaca1356. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/IEAOR0700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f069aa187fd12ec9251ba6d5abe9ae8ee56732d0f90f94f12dfcc54d6da8e2. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/IEAOR0700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda5b678e4a648e822528de3707854caf5bd004ad0e1dc0f4cc8a33511f3bca5. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/IEAOR0700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ee15f6adf0f2b4ec38d12f3d377721eaf5b306707346763ead5816d1f24f9f. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/IEAOR0700042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d50795a4d948fd8b6e5b05c7eab0e92966791917015ea1ba66c2af0eaf3412b. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/IEAOR0700033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ea473717cf39639b8a504923fd6568e21830ec13c8c92be32546c9e4c7811e. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/IEAOR0700034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31488c8318fb927dae04c4068b80da36fd78e7f254e412db1ab7396da523b354. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/IEAOR0700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e17253cf54e5281a512497ba214a8d8cc14a92fc2070d9fd7022dd6fa8802f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/IEAOR0700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ec07a7574fa4e1f6aaf9a8f01554b62a87bc223402b1518f6f4519132f2f8a. 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/IEAOR0400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17199d6cba710749309e2b0b8da4daac671bc1b46cd832bb0e54e6651abc4cd1. 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/IEAOR0400003.
Bonny Kate / Mrs. McLeod's / The Fermoy Lasses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b12310c1863d08c99852b81cce952a5a2bbabe042431e600cfb0d30a1729b9d. 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/IEAOR0400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ed536f3ec73269dce7740eccc0770d33e156b3d3fc7d5d16c6dab76feeca4b. 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/IEAOR0400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06506f1f24f611159783c513dae0278359f1d91ab92035f7bb5f0ed758d3fa85. 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/IEAOR0400039.
Leabhar Mor Na Namhrán, Na Hamhráin Mhalla