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 0x577e6db4e5756271d2c65f8960d5673dddd364ccf3b6ae122b79bbe276a581fe. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/26d48da2-51db-463a-92fc-edc0a5db17d0.json and https://artists.proofprofile.net/proofs/artist/26d48da2-51db-463a-92fc-edc0a5db17d0.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 0xd51888df0d10ada979e5bacd0b15c641d45c33970593115b28f8420389d0ba92. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NL3NM2300525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdc0c352715a24ffe1581da5595ea45fdddfd887e7c236e5b2cd0a2381a0a6a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:14Z), 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/NL3NM2300555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b610d597b9fd5fd60d85af5d076261484b49e77aaef83cd0fa8d1504c4b303b. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/NL3NM2300529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1957df17c4882dfdc5a22c61aa85e699e678f98f5a602bf4d17f867be0f1117c. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/NL3NM2300526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43416f5a9f8fadf6d1f6e11dd34c62bfdce500b7942cde0c7d69baaea0ebe1d4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NL3NM2300528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d83cd3667c767f6ef559c93643dbbd2c5495c0470819758ddb6ef88995cdfd6. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/NL3NM2300527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ffb62f9eb848775be5adce96e6768dbe0e84aa9de48a6927efaf0fe4634912. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NL3NM2300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a93644a3848c71079f4f6de5ee1c8a3cc4c44a9039afe553e1742b59e6c9f5d. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/NL3NM2300531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a61049e6d67c795166dc6ed23ddc0eabc3ab51587c2a8ce41baf60734b6665. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/NL3NM2300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f1ecfe51e431d457cd511c396452153f0736eb254c138f823b3a712388e84e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NL3NM2300534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b35ffa17632e6382c82087948f42afc3b70f9e79cd0ebe406d58f92c4aacc1. 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/NL3NM2300536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821e1694ef42d07da3bd2e420048271d589f974c1d4a6e0d499921e2ae65e6a8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NL3NM2300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b569996717fb141afc83800d38cee88091d192e12b94b9ad4a31ba393d23f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NL3NM2300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f155047e0a31e2d8cfd796a0c0809324478234e550ac8599343b8873a27bc25. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NL3NM2300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e0697fbc26bfda1cc548e727c2d9b49f4261dcf2076c962b3081c65232415e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NL3NM2300553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f98b7ae8a2341bdac47d14e1c0ca695287dbc3af4888d9eef119c63d335d704. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/NL3NM2300558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbb37c80c9a22de44ab9624fac0effc2ff2200f441d4829e7e0b104275fc1fd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:24:00Z), 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/NL3NM2300559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae5ffa48c5cc3c3055acc7d71ca3f012abb0bf2896fbdc58afa7be19a4638c7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NL3NM2300560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a3198a51f22fba91c9d3b8a5b6e264b851c4f67974bd05e076f6c1ec22fde3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NL3NM2300570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c152e6a456989dbae6bbe4ee7960148f11eb211d8af648671fc5f14721ecb08. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/NL3NM2300571.