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 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 0xd0f6b4a8d80e2602b45488b476ababec2b75605515c16fd2f78a5670e471401e. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/118907e8-cfc6-4184-b6ad-4baeb549d899.json and https://artists.proofprofile.net/proofs/artist/118907e8-cfc6-4184-b6ad-4baeb549d899.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 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 0x82882610becd5299181b7712d2bc4b22cf2ce5ff76cb5a10ae6e78cc71a11586. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBFPN1848701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf518118deef5a2f909ccf30a1fce7daa022b2da49d3a4b514be7e34a5e416fb6. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBFPN1848702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ddb342aec8984e767cbd25d560fd90102b4801e6d6603ed7a95130da3709e1. 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/IELRO2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee013bb74da3c23f4edf3e7a9bfb1089aecc4e254d47fce908d01afb761f79c7. 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/IELRO2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34f9c4f22a4136d2a170d25caadea78804d5b4fb394572d3a97e96d12ffde70. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/IELRO2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68582a8eb420beadbbda7bd11bdfc0ca7eaffdb684923e691778b1cd6efe2353. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/IELRO2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414ab6886cff6c826640ae26e97bca6d94e107bf92f8b41aef2c5b4a6985c97. 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/IELRO2400007.
Saol Aoibhinn / Life Delightful (Act 1 Scene 7)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d64224a754fa41c8056fec321104af2a4f4622d801ab4bb07731270fc50cf6. 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/IELRO2400009.
Dún an Dún / Close the Keep (Act 2 Scene 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad16eb5328f7695d2e564d467095cac512697ad6a390aa8b16fbbcc4801ce5db. 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/IELRO2400012.
Coiscéimeanna / Footsteps (Act 2 Scene 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2e8d9f34f860e07f56c4dbf352da66a511a8117ef91aa9fc63f349e542ba39. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/IELRO2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c19f175533bd9d23e2c3e6c6cb8b5b541ed79048989141c03b74198bbcd4a8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/IELRO2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd439d8ebeb2be85a8922b694f29f988b137a1e4630f38685572ff880392a64e2. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/IELRO2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab64d0b6aa2440eec1dfe1addc8b84854644d5871b22605de6262ecf5c01d17c. 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/IELRO2400019.
Fíor Flathemon / True Lord (Act 3 Scene 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc101cce7838da766bc5007bf760884b7b62db419ff54e591140e74bac6a5340. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/IELRO2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5232bc739629c541dca8f415ee0f8521d18b058fa24c367f05f817729ed8e6f8. 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/IELRO2400021.