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 0x240b33d3cef9d5f8becf41a9a7a15892d07a40c4d44571108244caff33a6db60. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d847daa9-cd42-4e1f-ab6e-d63a8ef93385.json and https://artists.proofprofile.net/proofs/artist/d847daa9-cd42-4e1f-ab6e-d63a8ef93385.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Different Kind of Space (Dmitry Molosh Remix)
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 0xa82b18f5353bdfac146226cc28d635d7f20ca8de8e395dfef2174b4d6d2be168. 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/US83Z1773046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2854688b6478c32bb9b2ef8763222464e31a88459371309efb2f5ce4db01e102. 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/US83Z1773057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b3ce7615220793e5a94e427b40b3bb68454a436c83b53f50112e18ec8390c5. 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/US83Z1773050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2994edd4116c9a7cf5d5a4b8bbf740eb2a72c6be7ce5f9406a88fcd404eb5c. 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/US83Z1773058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacd557ad0c8beb811663c3272bf35a6f7a3937523f6e00a6b38a603cb45dffd. 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/US83Z1773049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1122a698dda9b4c45234a224a9d2ddfbeb43b24da55662c6360963a401b24276. 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/US83Z1773047.
A Different Kind of Space - Dmitry Molosh Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aba9ede5721c46a6ce50981272969491bde08b62d91d3150b8c0a29f46e3e2a. 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/US83Z1773066.
Deep Progressive House Set - Dj Continuous Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded0252acab3600e5d176c68c7bd9748349126b3f7e967e1144e1e17faefc170. 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/US83Z1899360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c9fdad777dbeb3b045a39d869a8af0700628b288cddd8beb24e6f565554bd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US83Z1899361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3a3970f5b233bcf00f1831db33f3a5783d1b21c9e791ec8dfb78444c5bbb3e. 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/US83Z1899363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da709088bf4674c7f42f6da56c58d42711c30dc70fdd158a1c7640b29df6a08. 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/US83Z1899364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4ffe3005ab631281fcadcbb7553b142eebd704931f80e72289ffd638dd4c27. 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/US83Z1899365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe948e4b38b39bd67daf4c85900b1cb6e51a4737007601b7a225a27d2ffe534e3. 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/US83Z1899366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f412da7b08743a8b0dc6445452a1b690db884e5a7894ecff9196a87ae98f0ac. 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/US83Z1899367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf629a53df32f5d253094c94a73cb7f5bb5196d5bd0d530d639e42e55e62ed14a. 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/US83Z1899371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d6e5f5c51adadb0afa6acbe00496ba948dca21de722be285b4ee10d53263cd. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US83Z1899374.
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 0xb242b271d7063b221ea8e1a5ff3838052756944f34f408f0d3e1bf0240f79c9c. 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/US83Z1791186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d9855c33a34a86d1808c50607b435f2462f5bef98326348ebcb9b1ae7429bb. 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/US83Z1899261.