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 0xd639779302c479b79eb0108fb7a1a6f625649c1781c2e393e7052585d19da6cd. 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/1162bac8-936f-4a2d-a513-4e2a4c7636d1.json and https://artists.proofprofile.net/proofs/artist/1162bac8-936f-4a2d-a513-4e2a4c7636d1.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 0x292b515ab05a38e6348555e33dfc3a07d9ecd33ce34fafc55975a5c069f23db4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNMW2275114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858efab988aa6cda82877c7fc733160a735a38ba7c0924b06336cd4e27bb43a1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZJG52378362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922939dd0b63b3af1e8b37f1eef653d04a6148ae071ca0bd6b5043af99e3f9fd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZJG52378367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60840af6f105424f2bc2583208405615d67fc00b8c572355dda0a786df9bc85. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZJG52378368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d0a669e73f42fa083b560f44034156fc3c961e4961c210065cd39b520257a3. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZJG52378385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21d545d215ae628ed683a037a0be0f22a9541165cfbafcd1366013fd0b622ea. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZMEV2334613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6aed753bf0aea7b9f5b71034b57fdd45ef8925468c92c85690c36fdbe4d279b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEV2334616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870c28af89267f1f7ed8ca7ece087fb1f94918f9f4f6f09fc82afb9ab3329e83. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEV2334617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e92dc1352ea38c9c47a5b32dbbbef6e4c4b934aecd394ed99ed7520f709931f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZVEM2342445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca31335fa9d2ef4ea9b01448aaa09455882784593791aa1c88908eae2304cb9f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZVEM2371805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf388c65aed0ceaad758945150197913df54005cc2627b3f120ece8a60113bd. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZVEM2371807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7558328412337e596593333847e330950c17e42da3d93e8ed61f97e2440f00d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZVEM2371808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6f316e8ec55239ad74828e7e4eb8871c54538816d9844069063b312f7356f0. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:20Z), 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/TLVEM2457357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5886c48c71e37b002647b9d70ba9338038a0124b6d2f47c2ede0a7f5e7c6ee. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:47Z), 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/TLVEM2468080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafd5eece79898f317cd894a491d0e05c9ee581faf94cbe977f442f24768b1e1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:45Z), 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/TLVEM2468081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5654390fab932f5da15e451f4fdb9aa11e62574f8a446caa72f18b443f97d3d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TLVEM2468089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba693a39cc0d2e44c5b3fdfc0996e5612775fca73b94ddb0ce5532948a95bb0c. 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/TLVEM2468090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93580a2a052985d319ca435ac290f0c3bab4d80edf5edb4b6400c2ad4503155b. 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/TLVEM2468092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72332176025f43fe5a874ab60869fdea0f9c11fba299d8c4e4b1ac346e1a0c34. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:42:50Z), 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/TLVEM2468093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba4f36bbdf19cb262a050f93f258dc7ebda205e2591f94d6e57fe710cf1f912. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/TLVEM2468094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91333a705798caf3b7d4d552801f689e6be1ab0123ac56f9b89c3d48c20597d5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TLVEM2468095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d06f3df2c9f4844e365ab2df0d05b79e58d021eb5b4ab9d80b53857969023d. 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/TLVEM2468098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba1cc3f45f90add9e75843c3515fb828b974dc367bba579c9a8dc17cfd7af55. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:44Z), 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/TLVEM2468099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28841fab4e346ef1ae6c251c57c448729dc65719f41c375eca5c1a5afcfbf4f. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TLVEM2468103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad452e2d2562017d1cf0a843eaf6a240c477a74982bd7ef005d6664ff975e81. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZVEM1861240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681224cc970f413772b043a5bdb9ecec12a0a30c60869495a604c6c519ada379. 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/QT2VB2501257.