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 0x157bbd3646b2bd4fe091dc7e3cd9c40694b03a3542e9f9a5c36b7fd0f6a6ee9f. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2510bc52-1037-49d6-a691-0a40d4ecec09.json and https://artists.proofprofile.net/proofs/artist/2510bc52-1037-49d6-a691-0a40d4ecec09.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Glentown Frolics #1 / Glentown Frolics #2 / The Cat in the Corner
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 0x568396e469e3d90c7c8fde9b3c60bb627c5ff09ece437fba3227a4a014096bac. 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/GBQSK1202801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84abc4f5a469b2211df909c7a443685b03642b6f766f66487b00fc1e6110c7b7. 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/GBQSK1202804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36917d281da406ac5cfe873ca16c562b96bf78c84696f7ff831f75cf718d3a4. 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/GBQSK1202805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d09ac9a2142b5aa4cc495ddcaa528e4a4b1c22b0626508006f9546bb1d19f6b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBQSK1202806.
The Craic at Clashmore Hall / The Balkan Hills / Father John Macmillan of Barra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e78439ccbd7917f34a123cbdd57e92165e3584b8c1f72e1b9d54936ec6f118b. 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/GBQSK1202810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b3683f5483c3c882294fdf159fe7c0c438162faef7607ece0492cb3493b36e. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBQSK1202802.
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
The Gamekeeper's Waltz / Heather on the Hillside
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f80585ef0ae13470076f09d126eeb680d8e676355364e9a7e7f1407530985. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBQSK1202803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e319e75df2f797b7735d302ade3f7d967cf2c6649c1f850c4f59af795e74c3. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBQSK1202807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb895019495197cb371612d70246b5f0eafdf12e5842b1fd44047063e11e27703. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBQSK1202808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53146c1f8e2963281d8a3ec36a786713930ff1666c302c580ba117ddf24f75a8. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBQSK1202809.
St Ninian's Isle/ Da Wattle o't/ John Spence Of Uyeasound
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf2f9669a4ad1fdd8ba1ded531d0155ab7709d244d54a8a7af5db7d8ece2d7d. 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/GBQSK1002001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eba7137e763bb96c481cf8afddce7562735759574bae357a66ae898171ac88f. 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/GBQSK1002002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269acd205a1a6f3a416bbc9731f8cdc44f7a5b18744848f713eee10c3d2f4df9. 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/GBQSK1002003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fdc4740571470ec0dfbdbade599b68c19609e4a27d45ee87b7a8e842928989. 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/GBQSK1002005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa149884a6baa3005dd30bf622290185811b87a09c904651ee188e27c233672bb. 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/GBQSK1002006.
Annalese Bain/ Phil Cunningham's Reel/ Andy Brown's Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b447b5517319015394dbfc77c018b179cd465aa6924599ab41883fff642f5a2. 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/GBQSK1002007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6df1902e528995149d793fd8885aacc83f700324cd8970f74b7e2dac75629b4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBQSK1002004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d27c2336f7b4d66427958d34cc552207186717010e3ce9ba74005d6736f530. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBQSK1002008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f62a77238a93d1f7a3915deec3422d4ee6979420f8839a523079223bf0a12a. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBQSK1002009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf003f1e7195bf98093a2ae8641a1b01e942d59782094d2111e110e00862be43e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBQSK1002010.
The Queensferry Cooper/ Derry Cunningham's Jig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc59cbb691b14af060c5d52ce2b8828648e60900b802bf5afba74ddcc6382371. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBQSK1002011.
The Bluejay/ Scott MacMillan's Nightmare/ Manus Lunny's Terracotta Plower Pop (The Para Handy Theme)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8cb589ee2ec3a08a09bffaa7fb0bd753d375c54349fb59aa8b0b5066835324. 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/GBQSK0601001.
Rocking The Baby to Sleep/ Frank McConnell's Three Steps
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4431573aac23ceb0e59d63974ee51ca2e1bfd8532d5df3f747e89c76e56a613. 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/GBQSK0601002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bfe64ec1dbeb33505129adb2323fe552b12a13d5931101c058f68df9cc1e05. 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/GBQSK0601003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ff7eff33441aec534c78dee4560ff66aa76de8ba0eef58885870c09e79098b. 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/GBQSK0601004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c16e5dd8b0aa295e8e80713be1d4174595e38f754b2c9819e87af688632e95. 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/GBQSK0601008.
Major Manson's Farewell to Clachantrushal/ The Shinty Refereee
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66c5a6bf1a8d89a9a32e68466554452c8fbce7352a9307eb31c72678395069f. 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/GBQSK0601009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5493ec7318840ddb789837d56cde35dd0c4024aa1342119afddcd5314da0537. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBQSK0601005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86409244ecaf629a026f5b680fad7da6cb60343b78b2eb78cc6acb8203baacda. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBQSK0601006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cad015cd207fbfd552992c730f259ab10e2a6782f8e00d6326cfa77f52e8f59. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/GBQSK0601010.
Transatlantic Sessions - Series 6, Vol. Two
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c83c730b278767303a3e2d2c910ee0edc5a52ac3c4f325381db171bf64ef485. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBQSK1303605.
Celtic Christmas II - A Windham Hill Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78974aa80daef0de4bc10a2c302210acb5e991f0c40a92cb9b1295577ecb018. 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/USWH19601176.
Transatlantic Sessions - Series 6, Vol. Three
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acdf198044ed23557b78da6f7e13afc5fa7f3f0d22c23c393eaeb2c5a3590e3. 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/GBQSK1303705.
Celtic Christmas (Silver Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1f794a6a368499fc6a813419ec08aba6fcd79e3569fe6569b0ce6279e32ec2. 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/USWH10100114.
Transatlantic Sessions - Series 3: Volume One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5deb67149448c691c3c05d95328606e430f46b0aae8328d70b3b3c7c3cf3e4fc. 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/GBQSK0701216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7395c367d94bf0c200e46d14cc441c3cec52d00c29cfa7b5dcf02c647e531370. 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/USWH19902169.
Jacksons' No. 2 / Jean's Reel / The Moving Cloud
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6482086c24613d1abeb44b08cf7a05c65c3a770394747028e94274202ea31059. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBWXD0800005.