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 0xb6b099059dd00085d62d7d1a4708dac984f2b1c9e3d201612eada305dcc28d37. 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/dd092e58-fab6-4e11-97fb-01d7f29ddffe.json and https://artists.proofprofile.net/proofs/artist/dd092e58-fab6-4e11-97fb-01d7f29ddffe.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 0x319bad122b024bf539845b51804d0bdaf767c69a13ae1126b3f034e79b20577d. 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/NOAMM0400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64b5e6c59f23408b41b7d48e8330c0cec3cc039b7c30c32f24996bdb7d8c2b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOAMM0400422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcecd8b124cdaac2443c1292e346b531214eb50d15bf39fb50fdf2434635853. 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/NOAMM0400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510c6ee9f4f4c90cb8e315a2dd33c9d400812f7b14dff487fa42cf720a79e148. 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/GBBBA0642950.
The Celtic Tenors/Irish Film Orchestra/Frank Gallagher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d361f4c6483abdd1455c2620c87dd0fdeb0820391310e490d67c072b1f07f1. 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/GBAYD0000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3dc678b17da163cc84193ad6dee094cf761964ef91e8e9a67dbc0e2a44dc6. 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/GBAYD0000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf9963c08643ae060d8dd0e9a260aad3400d6b0a8cb0fa5244e3dc5054eb5c. 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/GBAYD0000118.
Matthew Gilsenan/Irish Film Orchestra/Anne-Marie O'Farrell/Frank Gallagher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793e3f651f6c63ec693b534c24be168cabeb151227086bb34dc03a74d5e79e33. 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/GBAYD0000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cf2685ac01bbb69d7b87f6fcd7ac8928b58b9501785e401e5432cf1db2f6db. 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/GBAYD0000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30299adb731e212009812312ef9f51235f90a5c89ba46e979e3d76230db5a75. 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/GBAYD0000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbd2561f266d4e12606706b9a4ca5cd02360a02e6fc750e9d51e003911e3ba9. 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/GBAYD0000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26da329aad6b17131f5268763d8a898c67544bfbf799511de881a7ed30e6fcd5. 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/GBAYD0000124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e1f8d96b93d9682d1887acc80e3b987ea94cd3f14e9cff795ef914df3c5b05. 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/GBAYD0000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3311db6d04f430a5967a9f8dd8d3e130865627b53a16461499abe3a07d14f1. 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/USWR60251216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b9f574f4d10c2f34acd3c0fa80dbe73c76f137878a4f8a30c96d4658b2b67b. 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/USWR60251217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bcbbad340fe48731bf3c8bd0625bb5a68d0a381ea244e898b273363ee6e712. 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/USWR60251240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a20c117fec6cbd30c3edf3c067cdf36bbd82220b1058980e7445e292f2b1c45. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBAYD0000114.
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
James Nelson/Irish Film Orchestra/Frank Gallagher/Thérèse Timoney/Bill Butt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce98a5d323596aa35babcc843aee6bc1d0af5846a5171b5a50ba0630256b08da. 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/GBAYD0000117.
Niall Morris/Irish Film Orchestra/Frank Gallagher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5b26fd045ba4fe1b26d2288dc3f6760ce9472182ba72e53814face6b53b918. 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/GBAYD0000123.