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 0x087aa1a52cf38a8fca193c364d88105526af693fde190e9c9fc013ac7afd448a. 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/35830461-4c5c-40bd-9a95-efd10e105e33.json and https://artists.proofprofile.net/proofs/artist/35830461-4c5c-40bd-9a95-efd10e105e33.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 0xa84bab64980c617f1c34e0f050af81e1c6f3a40ccd976930a71f064cdc7fca27. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:18:45Z), 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/QZHN42020364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b8fc71a0485a54dc498d555fc50b11dd022b3ddbd90b659085925d9caa2f5c. 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/QZK6F2073715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a13fd40b9ec33f0681dcedf862b1e74c0b78b15ec3ce30f3e6ffdbf180eb56. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:05Z), 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/QZFZ72121655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec29e7798b1e6931bcfeb36cdbc13d784493452787fd6f45b5b8d2cec568fe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CHF792200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e5085db284184ea33773ae178d2e964a2e4fb86eeb12309ac22d2b7c28871b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CHF792200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04ebb500e6daf9caf867166b6d1be91fa2fb9bc45394d5a714773e2cb787a92. 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/CHF792200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e391ba864d2e1ffc55af1daa21cdf78a916590798132bb744d589c821dfb1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CHF792300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83488e3ca9820abd47c20cfeab57edc640cf601f648f4ebe3a86ae5e57827100. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CHF792300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1633e477f9656fdfc5ddc6c36a8074ae7b4c6195d033513d2b785de97882764b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CHF792500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb15e137b261f39956532c5e8f87e1f86606e02b66756d9ace7dec1e7cafc44. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/CHF792500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f22b75ffc547f8229996a41b16d810b32db9f83b8767fcc8f7632f6444c0ea1. 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/CHF792500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed07f0f1b060cc034157e314c64e9cf2449613cdd056ef2f8b5a25d444b7733c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CHF792500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e040481941e06b3a74e34568f94872fb3b2a4806064c168c8b8982f1f7d7fc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CHF792500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132ae7b78de83d376b1e0d0fb30b51c933a7511d82b343581e420417042128c3. 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/CHF792500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f22b75ffc547f8229996a41b16d810b32db9f83b8767fcc8f7632f6444c0ea1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CHF792500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde34ec9bde9dc0673db16a313e17a1649802a254405ac2beeb823c49d7600df. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CHF792500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecea1cc492ec4884e608e22263f469e1937e9cdd1b3d9ac683ea27044f1d4776. 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/CHF792500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6255ffb4186ac5600be55a432df4412a4d82a6652cb940e1d0ee03ac2ebb3d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T10:00:07Z), 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/CHF792500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd782d3ec5ca269d68861a0f2915d92a736f441dac886bccaa528d3a90cebcfbd. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/CHF792500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb15e137b261f39956532c5e8f87e1f86606e02b66756d9ace7dec1e7cafc44. 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/CHF792500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92ec251ee615d6dc78257bf1ae96dc995a2e5adef114a4fb5415fc3b3bd9b38. 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/CHF792500013.