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 0x5a6e5f953d01dc85f21e284583a7fea85c9e0c4b2f37e39671f2e245a1d1304d. Chain 2 (Bitcoin): anchored in block 953706 (2026-06-14T23:14:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7bae07d6-f68f-4b4d-a698-877d89c72c90.json and https://artists.proofprofile.net/proofs/artist/7bae07d6-f68f-4b4d-a698-877d89c72c90.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b0f5415ae4d8296bd7a3beea8683ee5d7fc123bb0accfc8c836e4dc3c3cd7e. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:47:09Z), 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/TR0392100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6734f0140168e83c625850a6b2635d8dbd3a2a7268d5d63ce84decb12fdc12a6. 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/TR0940800793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5240d4addaecb42297264c88db27ae3b4613b0178249b11f647f3ba229f67f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TR0940800795.
Fatih Erkoç & Kerem Görsev Trio Live Jazz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe659ea4898e91e152f60b0c2f232e3ac156bb3c54a8129b0c8a1b107765dd. 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/TR0940800760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b97697723355e8a6fea272b56995f15e4518412346746f633594326f2a515e2. 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/TR0940800764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653fcf6f0aa53a86efa8e5f467b8877db912aac1a8e04f4963a1537c32214ca2. 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/TR0940800766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1c5092e6fcd7bd486e262659f8052c4abde138a4b16e8195d85e0d45a4b72a. 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/TR0940800768.
Aday In The Life Of A Foll (Black Orpheus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ff1d7d3956c503a425e507f861c4e9b300469690e3b88857ed4417a78e6079. 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/TR0940800770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2095673c8777b033a8c26758f05688afd3be68914fbfd416eb3759b4557ece95. 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/TR0940800761.
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 0x496274dfb3b910edb42f5bb0f86baab86131bffd77ad64e82b926a95329554f4. 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/TR0940800762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27223297f50cca15eff9311b8d94811336f7f854cb2bc5b6689bcd2845c3f898. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TR0940800763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696d3dc1aa1284c4d2c6d013519f75ba70134219c02272b7b3746d165f402c0b. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TR0940800765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdf0b45d0324f909f3089bf98f4a41666040fa503fae5b914367e11519d541e. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/TR0940800767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514ebb18587558efe081e2b8e10fc36c91992ae61d630a3d5cfd18d8a07c9d3b. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/TR0940800769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea4691691430018043b88c52ecc7d3512037cbcc5cb67654c2c0a0439b572ca6. 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/TR0940800771.