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 0xbb9bb60bf841e5fcebb5c2da13f46bcbae3cf50bf07bcd0685ca3d25548d23ff. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/712007c8-97d7-4fbd-a945-1808f2340fb4.json and https://artists.proofprofile.net/proofs/artist/712007c8-97d7-4fbd-a945-1808f2340fb4.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 0x60ed03beb7acdd2f30f2ecb456eac2008329d311f126961e8a2a0d264c578f4a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:55:52Z), 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/GBQSK9700506.
Western Lilt/ The Harsh February/ Far From Home
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856cd50c1ae0e72440f83353507664a993e673f3fdee32183eae2e9ab1922050. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBQSK0200810.
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.
Glentown Frolics #1 / Glentown Frolics #2 / The Cat in the Corner
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.