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 0xe4b85167638edbd072d690d59feca3f0513ea86b97ea59faedb54f4727cbe595. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ecd0cbc-9c6c-47f0-952c-6ce1d1efbb08.json and https://artists.proofprofile.net/proofs/artist/8ecd0cbc-9c6c-47f0-952c-6ce1d1efbb08.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Interstellar (Main Theme) [Piano Version]
Interstellar (Main Theme) - Piano Version
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 0x83e0abaed549fa37a062287a0e595ea06588afc46d3e72762a26abb3bb235a8d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZK6P1991931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bceaa987128f93a4eb32147e3b56ece387bcb1b6eb03d8292a2ad26b4af4d6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2080661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62099227762600092f4d79da48f9a32660aadc8ab6655fe40ee06bf9cae282b0. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CA5KR2148813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900bf4e881304c0d73320782686249cf20626db4d90e6ff7260dd47cbf7d7b28. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CA5KR2148838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834119e2bddec9935b0c785ca26c01789bc569e65269048e8d11c58274ad078f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/CA5KR2148839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e5d003ff84924845317431aabf0f42275f7d908932b44d509c50e879162061. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CA5KR2148840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ed8345b729b1f9115b56c5b654592b6df30b63c1d4947069069773708db0d2. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/CA5KR2148841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8039afb90dab35883f344080822e4f5a7682f3d2c618f007646df40a31a099. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CA5KR2148842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62099227762600092f4d79da48f9a32660aadc8ab6655fe40ee06bf9cae282b0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CA5KR2148813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082fb5dc273b6b3a64cd2c97d9b047c476bc0b77baf046c5067e4663f5724d62. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMDA62262261.
Aemeralds presents: Library Aesthetics, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082fb5dc273b6b3a64cd2c97d9b047c476bc0b77baf046c5067e4663f5724d62. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QMDA62262261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a0a3d2bce5073963853dd86a240093d824da689f129da77c7f3af782e44241. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUMEV2211235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0ebb86cdaea0939bc4cd4900fce32b2498a3143d422949b0ae4c3efadac158. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CA5KR2080670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99efe54799021797533f54e1a8c864a16b634efd0ab9b1ceb07dd6d97c6a0e4e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CA5KR2080676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bceaa987128f93a4eb32147e3b56ece387bcb1b6eb03d8292a2ad26b4af4d6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2080661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f25eda142199056bae1d1c71a599a4ddf18bec99b6d5063f996cf9140befa82. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZPJ32154761.