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 0x947543df7fb9e40119d0db1db0c51f330b2e9efc4e418198b624cd381beb3bec. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34f0ff48-0546-4ea3-95c0-f247fdd59a35.json and https://artists.proofprofile.net/proofs/artist/34f0ff48-0546-4ea3-95c0-f247fdd59a35.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 0xd42873ff0860a794ece3d471f0e6e6795be8ce524ad066d9528fe410c09a41ff. 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/SE52N2358201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712206378fbc93939347d41f446a3b85e76e5d0334144e412cdfe8ce269bdc0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE52N2358202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d392a9a83a5c203fde16bc9ec030cfdd11d4654909faf4fee35e81397a5f129. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE52N2358203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d69a0ffc2150d9c96c41a7deaf7e43fcadd8f803c594f61846fdf1f9380c81c. 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/SE52N2358204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bc4d3b8cfb29b6b47b7f4a18c15853dcee4e73bb6bcc145e09d904ba65a87e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a77e7c63ce9e50877d704638ca387d7fbdac7761515260d1a7915d97e8510c7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd188d9266ec05663adc67348806cd77a607cdf2e7e8eb0db05907031ae594f4. 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/SE52N2358207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351c2b7f67094b702414809dff69adece7348e7e03401eb59b0abac88fe708bb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7884b2b62142a95422679b21c652908c016c6af99587cd44dd227a9acf7e6c5d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb448d19b0c1090a422f306e00b0aa7708310bed44e18a520ddc06ec517a8611. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907f8b0f7dc98ffdbb79bb940d6445e2cd240e233b690e0a7e2eb102be463ed7. 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/SE52N2358211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071e6afe69023b8a924ba8ad2fe93db8ac7f78891d0b7974c4e31bd3aa366a53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba82dafce035ae47f9c2526939f70e10d57fc4ff53bd9bc9eea52dbbc5deead4. 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/SE52N2358213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbe5b4913ff97fda10906fd3ad3d4ac446b341e8c65df963c8be21cdcef82b2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb305143b4b2cdd0af20a719d87dc1dc5298087bc8c8118414bf958051fcdd6. 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/SE52N2358215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41aaa05b866390c1290b18555ddccf638b69b0d558512d6339347b07f65eaef7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0d81c2e33299f69900d738594c7578c9db6796bcce263a7c4dc3337958e88d. 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/SE52N2358217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19183e7797910da09aeb8a40b8f855c517cd744560f95636cbbb59ab2e82d18. 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/SE52N2358218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824109929effc14bedd49263e7d5d5962f6838a8ea6a21e128ef5de30e43f04b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb75aa1ae5e587b9526c553ee6795ff29e9bf9ce08d55d90bf59c0ed156b615fe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE52N2358220.