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 0x372562841bfa67aef7701fce155c0beb99223bf6fc88a5a77d46241a130d4f5d. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edf8c0f3-0807-4aad-8fda-1ea4ce9613e7.json and https://artists.proofprofile.net/proofs/artist/edf8c0f3-0807-4aad-8fda-1ea4ce9613e7.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 0x9020947ab687e45bb0c5ad57037311af1e43c8b1e8821ba92d9be4f5061b7161. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:37:54Z), 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/JPS652100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9020947ab687e45bb0c5ad57037311af1e43c8b1e8821ba92d9be4f5061b7161. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPS652100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58583aec0b797121dac0336cecf5927b5836cdd7c3f8fe0a3d336b22fd76a112. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/JPN752210077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69f6004360866bd143fec59a8b19ba48806cd1b41ec6f65839d209eb1314472. 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/JPN752210080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfee358c2359c42a234bb9b631408451dee48d144f9a1bcaed66cf7792f1cc61. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPN752210081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0da3dba0f5dd39013350ff6b43bcb6a3ba9a5a5abe894664c70646a31943053. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/JPN752210119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd44bad3f85485139dba1e4f04e994473f9a6331e1b9796e925071878e8cfc4. 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/JPN752310017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e805a9f7afd120a7bb381602a2d40c066e842ea2d7c188c37c36a6b121565f. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:38:28Z), 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/TCJPZ2444423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3a569bfc7e92c421271ed33e11c74492a7c6aba8367fe5cab049631d68e42. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCJPZ2487542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04096ebebf302afbc9b0095691aa38b13a0e0ebb483ce15dd7a209588ebfb60. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCJPB2441575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840791b552b5eae0fa1f9e51f75dba949fe1cec3efddf4a76ad28f12179014e3. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:53:19Z), 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/TCJPD2579085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7270c802c1e150a9009110b2ae253a60bfaa3fabcc54afeea1c68fa08aab46. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPD2568548.