thumb|Statue of Fungie outside the Tourist and Information Office in Dingle. Fungie (), also known as the Dingle Dolphin, was a male common bottlenose dolphin. He became separated from other wild dolp
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 0x45ab3428398da8dbf8b79c57bb945d39639eb66b71b9e187b8471be848491eba. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3e08bf8-0439-494e-9c5b-decf1ed8bbc1.json and https://artists.proofprofile.net/proofs/artist/b3e08bf8-0439-494e-9c5b-decf1ed8bbc1.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 0x90a00f29317bdbf8ab036ef12c9b04005c5d36c7f1c0999f246c865eb42cb7de. 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/UKZGC2407441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee247f5ca47e8f89b5b1e193a5f0c9f21269e7f20efa77ddb3682b35cfa829d. 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/UKZGC2407442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3ac011e532a48b9473896d44eacc7d73db66d9e004b0100361d842a9f10cdb. 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/UKZGC2407443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41ac28d08239f5ec1294c2c1365c750b82c46401d58e88843183c76b20d7056. 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/UKZGC2407444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf97c38923fd6a86a57bafc5c108008b2991e3c0fc0fc886deac0cc791de63350. 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/UKZGC2407445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc720719d94c6670792cba8635fd0b9085dd34cadf11e494b96a05c0b5e1488a9. 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/UKZGC2407446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33aec759f83f27de4cd10a07ee8f2d924d90a1e5fbc0c0d85ea1d3445d558d7. 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/UKZGC2407447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906da4911e024fb4474862773be4cc0e63a1030a57a97d560dcf1600ae90ee18. 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/UKZGC2407448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772c3613222ffecbfab300f5906cb9a13ec59f8126e24547fb877e8a4c8ee568. 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/UKZGC2404246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661246171f4a4fd2bd77e5c03649204d019e8010e1d4f508a55c67c4cf707f7d. 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/UKZGC2404247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb591a9f90caf2dc7ac0fdb967c1b5f59206509ad8416237c7f5a3d9af3c19e33. 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/UKZGC2404248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754066a1c613b439198c917c7e9608d658b5c4acc81532f09f3bcab4d32bdc6e. 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/UKZGC2404249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210ad30b2e3fdcea86e0f6de4dc0f00a40128a8581a34d586a062c38829bfabe. 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/UKZGC2404250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d6a8d5a1cf84603974fed4918142cddfab84df80b10feeabc057cd37b6062. 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/UKZGC2404251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759e56f5b1706496e3205cce6f99d23eccd787f91e7f0b7412d68f338c971154. 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/UKZGC2404245.
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 0xaaa83a427cc1f2ff55308fcd975318ead95387fd9ea10a65f2d4636703494213. 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/UKZGC2307459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82d407c58ae23438c3938d46c5e6d71fc04a52c712008da024e3e409e9720e2. 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/UKZGC2308566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba836fa12c1a809d3bc52247025483d71b25407cd9d92789749eb71f6aa6c39. 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/UKZGC2307993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f3d7d920c291e5b3b2f821f0f5369217069f4b1a0ecd6db38a802f3476cae6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/UKZGC2301689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220bd0578c5892583e70a19e8395dcb032bdf5ea9f36df3558de15f8f3556a23. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKZGC2301553.