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 0xc2a682f0c686e91a07830136c662f811b5359382d3381cf10d9d3a531542f139. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fad82f8f-039d-41d7-8b20-8d5a31871332.json and https://artists.proofprofile.net/proofs/artist/fad82f8f-039d-41d7-8b20-8d5a31871332.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Shaskeen, the Mist on the Mountain, Mc Goldricks (Jigs)
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 0x45cebbf702e91c5a780fedee13cb735eba844a8da7646f92edbb41854197ae8d. 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/UKJ461600002.
The Plains of Boyle, the Friendly Visit (Hornpipes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbfa3a48f6602977135f97bda7668657764274bf8876ce0effe42747842eca5. 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/UKJ461600003.
Bunker Hill, the Gooseberry Bush (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a058083cd2193821a202b55a11c5a7577e4494234bec89d2b25c1c5a50f09ab. 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/UKJ461600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72addbc4e545db6a5f6933bd2ab5e0a4337963890a46fa4507608abfd631a3e9. 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/UKJ461600009.
Willie Colman's Jig, Gallowglass, Aaron's Key (Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b60ed6288c41344d34a00b5548203804377a60aa5f99b259290ac74bcadc9f9. 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/UKJ461600011.
Táimse Im chodladh (Air), The Clumsy Lover [Reel]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33ae4c4dd6a45fdd4c26e562a767168f0111bf14ae65f68a927b49212610df6. 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/UKJ461600012.
Rip the Calico, Farewell to Erin, the Lobster Pot (Reels)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1ab2099932654c2480201d64dc5098c85407c4fc2e0376715cae79f7c716d5. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/UKJ461600001.
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 0x45a3ee486825d27adf1319d3038f320adec73753f29896f5c1cf4ca2b21dc2e2. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/UKJ461600004.
The Monaghan Jig, Scatter the Mud, Hag at the Churn (Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b9f67bae8f7328283be514878d7a9f5b90830a3bfca251b067a60b6402978a. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/UKJ461600005.
Moll Rua, Hardiman the Fiddler (Slip Jigs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824c1d8714a36b2c3b97a549ffb88b796fff8ecf8f95b922d6ffdd346dcbe649. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UKJ461600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d8fb8fd2e061bbdcbe8d690df35601ddf21ea86413bc8c3cb5fd9e803408c8. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/UKJ461600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ec2bdf0329ca3fad86d0f913e99a8bacf6fa9cd884a63835efc40fd8982850. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/UKJ461600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c70f3c153207ccabea8ad1507f3876331b0d679ea9c2b0209f8cc560ccce475. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZES52526250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67e39fc3bb690c1dcd6819f1a07ec4ea8b22df180e92954b67e462b2f6bd251. 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/DKHT11700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e42da12a54e6b84a50982f31305c707905f87739f58cf00ed94d0f5e5ae0eb. 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/DKHT11700102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5e01dbfb54ee8a4946634a48102c42bef10f7912588977613a21404521eb7a. 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/DKHT11700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e639ba741dc87a6ed5b0b91cf5b7dfc4ffb2ac6070ab2f26643abb24eaa5526. 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/DKHT11700105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87267fde2df72d78cfef3de298ddcdd1ebd336148fffd6f655f219d1042fea0f. 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/DKHT11700106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f912973689e6d34b222c81df76450521bc105d1c1eb1ff6e15d6017ac662ae3. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DKHT11700107.