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 0x3a7525615d9b6f73bf889c21af2dad9e61f31f99ef94507b0bcd341b6bf43db0. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28daf831-5c4a-4632-a35e-e1e2be278fe1.json and https://artists.proofprofile.net/proofs/artist/28daf831-5c4a-4632-a35e-e1e2be278fe1.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 0x882d052175bb2b6d8c2a99e30ac71c1879045b00212901dca46c800811d29cdf. 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/ITM461900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b9b9876f98fefa0cd8a86f93ea0d6ca2b2439683f1a7b56079b8b380687a66. 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/ITM461900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bb59afcfcd3e0626c01d67d163fff9af3b6e4278f2cbb520890e377a809075. 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/ITM461900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39fa7a22290c4f8349a524890e4be663558e411132122f2539b88b0844848b6. 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/ITM461900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921c0db30c78f5b769d877d1c0c5e669debd924a9b090e05ce3723ca94155243. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITM461900229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ce74529382b14b46ae0c5113080263a34e7c4599267d152b085512e1ecdd44. 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/ITM461900231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28862116fb6f3bc7c8de13b063252589b62f2cb9d7bd3c5588c7a7d394e90f66. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITM461900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882d052175bb2b6d8c2a99e30ac71c1879045b00212901dca46c800811d29cdf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITM461900225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b9b9876f98fefa0cd8a86f93ea0d6ca2b2439683f1a7b56079b8b380687a66. 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/ITM461900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bb59afcfcd3e0626c01d67d163fff9af3b6e4278f2cbb520890e377a809075. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITM461900227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39fa7a22290c4f8349a524890e4be663558e411132122f2539b88b0844848b6. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/ITM461900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921c0db30c78f5b769d877d1c0c5e669debd924a9b090e05ce3723ca94155243. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITM461900229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ce74529382b14b46ae0c5113080263a34e7c4599267d152b085512e1ecdd44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITM461900231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28862116fb6f3bc7c8de13b063252589b62f2cb9d7bd3c5588c7a7d394e90f66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITM461900233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191950e4605728e9ebbbd59e6818e001807e378168cdfe6eeca5628625fad4da. 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/ITD241711902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282c959efd68b0cf673adce6099f1a3cc4684aae34a9a86e0e012d4c32ffdb23. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T14:05:15Z), 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/ITD241711903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88a253d004258066b9b5709b301bda5d6bc35d1af87346bd66931146782913f. 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/ITD241711904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e22642810c7c98ecbe26bef6da97fa5bb43825c3e42fb92cc8bcc6c50b9545d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITD241711905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb070d8cb95889bb4addb74876077af6d8cd54e8ae52818bf3b4dbd9bee03b5d6. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/ITD241711906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b231968d8e26c317ec323dfd992143593020b47c2e3849eb01a451cddcd28f5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITD241711907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf576ed88d7627e5bc26bbdd546344097860734c5ac015373a7e1da0775026d15. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITD241711909.