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 0xaa40b00f70ec1583f4cfb468eb73c6f95cb8459d221234c5c7cebd38e5030803. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b75df79-e276-4628-a599-fe04946c5094.json and https://artists.proofprofile.net/proofs/artist/7b75df79-e276-4628-a599-fe04946c5094.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 0x9123f0bbe3d0609b86bb7b254ed7ed70b40591c4e70bb907dfacda0bf750813f. 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/IEAOR1300013.
Sean Reid's / The Drunken Landlady (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71654b6a60180f8ca756155606c3a4becf19b29e5c04f6af0dda1db0f03d8c83. 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/USA371006054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb61329ea04a56c182fe8466cbf1e962d45314ce61d255e3da31c830f5172363. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAJE6400568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3795f7a85e5551f73ecadb3f2d567560df56d61717b8b40be739deb31acf187. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEDKX1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7931b43e68d58bde90c60d1c62a87e424126449481c9de59b558333aeff41108. 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/IEFJB1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e50530b0b12504ff45d30d663142967458095750b92bd89e826eda5f4216400. 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/IEAOF0700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69754b4dcefee11a6bfb8412c9672f84cba62e640ea1de90f071d8984e5f3a72. 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/GBGRJ1340111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe647fde586110a61ef1273eca00e148cf41a109671d6d4dc0da27a664dc9916f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEHGR1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3af980412032c3d24781aebe1bcb87984033ceed3313c1cf82d08d90c1e9384. 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/IEJAV1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5ccf87b44e5aee797625878da990bfc213c0406c984fd85175b1464a326d4b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEHLE1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf736e1ea93d39f7ed54ae7509ee877632b24b7bc9929356d23621d11783b0676. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEABR9700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5755eac4043aab5e083a36530ac8813a65631391a2dd241b6974261e73c45bc1. 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/QMKYL1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a56f529e0d141417a5c2ae22bd3bf15e67aee8f48d8dd4bcf288284c7bddc9e. 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/IEDTA1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ea56341fe10d9a098bd5673f0e8b0803a23958765f910998985b2eaa1df6db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEAUF0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7856bcfd3d99417d5a26359a6d3310e5202f64c213d6a4167ef9eaeac17eb4bc. 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/IEAXV1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a20ad7726fae6b90d3d6849eb71b09dc38e2221bbd0915bda7d42d49302da6b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEJAZ1300003.
Martin Wynne's #2 / Martin Wynne's #1 / The Coalminer Reel (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b00bef7af6ea7079d2be0e6420d704a6db03c6e1cbdfb2c8fc5061642af612. 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/IEHEW1200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234ce54cb368e0042b91bed676baa45b1025befc6a6a820460d45a5e6968ffd6. 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/IEBRD1300001.
Union Street Reels: Union Street Reel / The Errigal / Bag of Hammers (feat. Brian Morrissey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92956513ef6334059740d4c1d670f094baca147cf21297f6c2c45609459776fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEAUF1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a14611ee608dc016286aea62dc6da52567386c547666cfd0bcf1d891aa5872. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IEAUF1500007.
Sail Away to the Sea (feat. Brian Morrissey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba276df01265ae43ed9df6a522eaf62dbd4eb61dbbb66b5870202fe9d81cf22e. 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/IEAUF1500011.
Limerick Polka Set: You Broke My Cup and Saucer / The Caherline Chase / Tarmon's
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecd42530de370697583edc46ee50ded2a42e2ebe74d3619a084d67f0a216df1. 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/IEAUF0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30215e2dddf07f84670a2679ec90243ac5ddd655a09de783d56c55d12612ce1. 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/IEAUF0900003.
Bualadh an Chasúir / The Road to Finter / The Eel in the Sink / The High Road to Glin (feat. Brian Morrissey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ff757fe8ef0875ad0871ae4d86d30eaa0219356d182472ff7c8b403aa983c0. 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/IEAUF0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ea56341fe10d9a098bd5673f0e8b0803a23958765f910998985b2eaa1df6db. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IEAUF0900005.
Hornpipe & Jigs: The Leverette / The Queen of Connaught / Dún-Na-Sí (feat. Brian Morrissey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d72997e8afb79b8c4b7272bfa91fe8dbf45eb56d8b59d3b4e0310c1b82db63. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/IEAUF0900006.
Highland & Reels: Trip to Blackpool / John Lewis’ / the Old Forge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b5459f58c542e7a5b8e42e2e4878a8388ae621a479b87049e6a4db863ee74f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IEAUF0900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fefe0c521cc5ec47063ab4eb70c4dd404f51c941a87e9fcd4986f31e03f222. 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/IEAUF0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38f269243002aca43a9eab1ccaa701b32449e001ab1ad36d81d1893e6f2e5e81. 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/IEAUF0900011.
Polkas: Dan O’connell’s Favourite / The Race Classic / The Gullane
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095be1999f88f3ec1695cd9c4d5bcc303cb0ac4900d829c3fae2c1c17e8b70f8. 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/IEAUF0600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32c16174bcc4033de89c611fe4187252c3359a8aa0bc7306af85092f8705e3d. 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/IEAUF0600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269508c15ad0a26a09659cdc07020a02ca7ec281a22def6041dcf43b58ef38e8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IEAUF0600005.
Hornpipes: The Harp and Shamrock / Off to California
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586922498f5b0c0bed025c2e3a0b1571f4e76e095c3fd7a305308117787c37d3. 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/IEAUF0600008.
Reels: Paddy Fahey’s / In Memory of Coleman / John Brennan’s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7525d9350b66fb7c38d75bf87fbcbe3b29fba9fe9b51257bc39a30220c717b2c. 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/IEAUF0600010.
Slip Jig & Reels: The Honey Bee / Phyllis’ birthday / Martin MacMahon’s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a3174b0f0ea066bb12fcfde7481aac453d5f4bef8d783e999736fd9ceeea0d. 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/IEAUF0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6950781464b9471af2aa454317e9c604b05643b9bbf717ccb7caf4c1ba574a89. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IEAUF0600013.
Highlands: The Road to Glountane / The Glountane Highland
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e9c11a966e0b29c5340e3df21de30064d19bd2893d0f5672a04fe477becd7e. 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/IEAUF0600014.