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 0x59b248d8dd0008305f25495e9bcb8009cc5646d49ae65ec46f347440c1ea519e. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91f2f937-3395-49c1-bc72-974b18551887.json and https://artists.proofprofile.net/proofs/artist/91f2f937-3395-49c1-bc72-974b18551887.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 0x1d762c96d0f09217d5a68af1ff4884bbf2206c096395c7255c71a6ab97c4a459. 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/TCAFO2117865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bc83d08c197e6331d391c510d1b9142c58315d18715e1cfb1f7ea001d438d6. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/TCAFJ2183797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33818e3b70d3f721418851b2b63ccd1f8b5b5d7308aedce615b610d3e7a6cb70. 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/TCAFD2000371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdeb9cd653d03cfb4d00960af4d48f3689b6d442d0260f2f1aebf0ab465edc2. 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/TCAES2084037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deecffa343b24c029c240a0273cdac50693962a9e3b9d055eea7dd992eec68a. 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/NOUWM1901119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5612f3c271e7a5c536bf2df9a198087ddfbedff0dfa2fb39365a128f3e735da4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAFQ2175659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc3fecaced30f3d0f48f1426490e05407d5a77320bf13013c6ee9fef7562580. 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/TCAFN2127165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4f8721c143c86ed8439a952e5f63083cd8d5221ab2425e5b05f61eef65eac5. 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/TCAER2067673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75df2cd79f84f5dbb04c38276ebe88c4183bc20ae00bf05fa7c71688d0757f5. 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/TCAEP2021617.
White House 2020 (2020 Remastered version)
White House 2020 - 2020 Remastered version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae1bc1a2f29dc2c7f9755a1995bda1875ca4b5c14c8ff3968903ad7e60e9f43. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NOUWM1901121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c80678d4ecbd4cefad37551c23f0ccf9dc607e9b53bb71c2e6e23c95ae19eb. 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/NOUWM1901123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0590bd5f9192e2b6f7ed23578cfa0b16a1d1e460182449b9335b35eb10e25304. 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/TCAEL1944409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d47399139f619019311c16e6bb54502a7a1b225e7e4b6a7f02fc04f49c3aad3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NOUWM1901095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bb50459ac8f43ad26ce5a8dcf5c0a5961810edb1038742b2987a48b0da7e5f. 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/NOUWM1901093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df656f4a6584a1644beb71a429569f7e9b53e4bce2bd4e07c2f335b0e989016. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NOUWM1901075.
Hjulene På Bussen (Pandora 2019) (Brynerussen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad3acefa7d0b5a7a074abf6d374e4be464415d8dff77e61d44675588e6cc3c0. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/NOUWM1901063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3d0505c707ad743aebeb45bf67fd06b03f215ca2776c3b8e0e645ef7d1e4c1. 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/NOUWM1801084.