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 0x0123a0cf565e0fd14ac6a1cb9cbbabea9b73a3b1c1610be40d4f0dfaabdd57b3. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/94b5b0d5-b24f-4351-809e-f6ba22dd1de7.json and https://artists.proofprofile.net/proofs/artist/94b5b0d5-b24f-4351-809e-f6ba22dd1de7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bloomingdale 2021 - mixed by The Palindromes & Dave Winnel
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 0x73621a01cc342a4eccd0e16d1d1c94ca0e9f312d21c32a534caee4c7e9be1863. 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/NLD682102427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deb22183038fed9a316cb5e3f39a470186b4e1989afd980519767bf8e08d49c. 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/NLD682102404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a63cee699835fa11b5ea4bea050c0295624a25cda78c4fc398c1f6bf87741. 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/NLD682102405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6b5b7c1945b9ce3b93408d6a462e9ef9e08fdb89c04704a625c1a7a448e4c4. 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/NLD682102430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65f79db96a213d33b434dca305780cff03856954eafd8efe89c8d5e86612132. 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/NLD682102433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a881e2857fe6afb42a827d4d0f38c8c15e9175628da713d75f07ab7571ee528. 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/NLD682102435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b1835b339a0b50b7820cf9377824308d984ecb6911b8e44f7ce7a77fc799fcf. 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/NLD682102413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3a517eea64ed455839d7a08e32112110926c2087413d6c911c3d249a363711. 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/NLD682102418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8554aa4b84586b1acd3eea012c51536394ebea15fe47eeb21da827718a468de6. 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/NLD682102442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9042224190c32b5ebd3a8c473fd90f5bcaf4f5ff36e1aef7aa56db245b69f2ed. 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/NLD682102420.
Good Fellas (Beach House Club Mix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a645a15b945b64a8904d52f0f38b9e09157c9673c975928800a16ecd1e148b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLD682102421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22c97944332f1a881e117ec470d6ce5630d9aad4a631f06ee5738400fb20f93. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLD682102445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba04f2d72c8f030b1e9b74b928279afb75ec5e48eceb808789534493ecea41a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLD682102406.
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 0xf0adf014442ed96ffcca910e7b657409cc544e1866b99f58c931fe0795930a21. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLD682102409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5948555656c7f4082f0e384b30c34f45659cdb1531053a82c7e9c69044ca7bc3. 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/NLHR22200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110412f3a154751c19b93a4c570804c12169afbea5f7af3eb8ef0e50de15a32. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/NLHR22200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf37034cc5089e5fd9af98c7dd9eb0043309f51a0454a440b0d690dd801e8a4. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NLD682101095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17464c58b3af2b81cf41f32ae286976b878cb1ea4ee7ec4d6de680a582608d30. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:48:25Z), 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/NLD682101094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ef9c330b173cf4f2ebbe0770e83295355f5599ac9cace646fe18085d82498c. 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/NLD682101043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907c3ebc75abf843b9187f560b1c4db5e5cf182e3a509c6935ed5bce6fb57cfb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLD682101044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27584cc81aa5b61b22b91a4df8367231b5f3522ba403e43fc38616618af33ba. 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/NLD682101045.