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 0xb65a508d580084b6b36d03bac886586921866be224ba225de12054e01e6f4951. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9d074536-f2c5-4100-a05b-5ce6432d4755.json and https://artists.proofprofile.net/proofs/artist/9d074536-f2c5-4100-a05b-5ce6432d4755.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 0x59eedcb1714178d6412bc02d45ab409dc640fdb19caa34a4336c6fbcefb0546b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBSMU7879669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6c881aa7a994519a25e6220b9a9c1d14095ad298bf2383b8af0ff6cd8b6dbd. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GBSMU7442326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dfa9e5ac622bdaf5facdcbf7a430513364054c9b2674a81c19c2c37f80f399. 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/GBSMU8490591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a448d2a150ef2bd64f5a2c013575503d73681c580e3b0dd7f14e9457df1c13a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MX2832261023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998a3ec3de3587671301a49cdad0e42568cff6a8503067c5ba93da1023938148. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/MX2832261029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab297b4f3972130a7157f6981008be8d6b35cab05d6fcaed295473f7445e9e2e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/MX2832325313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0b5dda32f29b63f5c6ff697f653d631cc7a0aa155085d4a439f78a040d044a. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/MX2832328879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa452070239f3c3c25ca2a82abb5b4f38b9aee0eca3a695c48da6868715869720. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:50:20Z), 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/MX2832414042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e13c0a18b1b5ba29fe30d50c6e620ce2c6aa1ca1c15a4dc5b27798cd80bcb9. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/PENMS2403191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccde6b82e29f0bc7ab5cd27ac670789a4d14c4e65e3f2025bc39e53450817d1. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/QZZ8B2408955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e97fec4eba6c2e061e73b5a97d32aae284a3455404cf64ad6e1bb04540b5c4b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:01Z), 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/MX2832463416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268d6cef6a11598dd3c94f1d0ff4f07b4b69d28f3a45afc30de07e0b950fddcf. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/MX2832520935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02649f118472944494681e1378a472f270e8f37aca895e8ae61074d1a7975a2c. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/MX2832552971.