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 0x699ac5084f000836b5a6684e1d19278b6e681b3c33b429d9af53ea49448e3efb. 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/885ac8dc-427a-4703-9f7f-67bd78205aec.json and https://artists.proofprofile.net/proofs/artist/885ac8dc-427a-4703-9f7f-67bd78205aec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Creek Reflections: Peaceful Harmonies Glisten
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 0xc29dab16dbf31e3cfc9417905ea25f8a92ff4c742f8b2f0f5c395d39b1c41dc8. 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/SE5IB1702068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53d51bf73762910d2575fc47b80253726f247c486dd77344aed074ebef4c835. 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/SE5IB1702072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3802fb723095a3e1a6185988d3d3a05500ecf1be682e605598df3cdaa534afda. 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/SE5IB1702074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959acb745dda8ecd4b587a5272e8a1e246d8268ca637d4a530a2495c0d7f18d3. 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/SE5IB1702073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c57aedac0b0ce4ff2a55a0fc50bdb2f3fbba48e3ad4c59751f518d389f563c. 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/SE5IB1702071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df1f8262841267297ad81b6e0c93b0345f5859134cd08903565f838c503a54f. 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/SE5IB1702075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeadb8cc91b7eaeea8a0cbef6d61744ff5e436fbd61fb63779f0f663b97caec7. 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/SE5IB1702076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bbc0c06af60438a4a4aedc8421f8f8f2ed38252d73e5613cabad0f9451d580. 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/SE5IB1702069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27790e04643d06b39485ed5d1456f126119c7df2fffc6400f6cf98acfe11de4e. 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/SE5IB1702070.
Water's Melodic Pulse: Sounds of the Stream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a56ac334faf78eaeccf653cda53e67f6bec677d33a7b72e924d21768854365. 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/SE5IB2218577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf736022dd7227f77067f34931bc8e8a87842474c179e3e95f6c65ce844576085. 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/SE5IB2218593.