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 0xba82ba0a57e2dff7dc5431ab0965b2319ccacf681b34489628d50781514e28e2. 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/bdfa5fba-138d-4f12-a8d3-07f60d948167.json and https://artists.proofprofile.net/proofs/artist/bdfa5fba-138d-4f12-a8d3-07f60d948167.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 0xf269ed726b86835ef13f407120069223a6669f4d20cd585d41bc8d2a4498e9ff. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:03:27Z), 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/CH6541656753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce06c0c35877d1a416e752277a617e453305ce05b2decf820be4aa2f6743d57a. 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/CH6541656754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4f5bac102ea33af67bd6fc004d65c95a36c8e027410ef9289a1e1fbc683d9d. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QM4TW2534318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9926c8a40d7a80369d8fdcf4774b7003e8585fa4a1e5c1b00a81500d72f661. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/CH6541656784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e56b9aa12af57e1c459e8eae938da7a77a6c4eff92df9619a6be4a12571d83. 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/CH6541656786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926c4575d1891596bc201912782726f48598e18e25944a600b718d0f870638ee. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CH6541656787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab05faf604044788fe75a955cc4be6de81ddb64edda7529398bfb288ddb0004. Chain 2 (Bitcoin): anchored in block 959063 (2026-07-22T00:39:18Z), 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/CH6541656785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd126a41f257613b4f4bf0460a8da561b68971c845689ddf94c6f9c710a02cfd5. 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/FRX872440050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfd173e1cb5f0a0dd275a61160c6f1a57a28f82cd5785bc3aa0b91f4862e940. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX872440051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46987d7324297e3951331efe9614cd788e7368fee2b8749735ec7e2778be3d9. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:56:57Z), 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/FRX872440052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd200132433e730e499dd9d8abd6049eab429f3002ff1da47d59d6f32b253338b. 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/FRX872440053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d95489c31f6398a0d5057d4af7a0780245158d243d8e1cbc128393cbfdce51. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FRX872440054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593f8b5dbe7d910c80abb6d7a70878540735ffd84dcbc75fe8eb89366c74b263. 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/FRX872440055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4757050f2cf5d6a72f6a935d5e5bbde9f18ec39048795939d9265aa74ae4769. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:31:04Z), 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/CH6541884955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbf52fdca9dafd50e6bb4ccd09f8891a2718d2e708709f1be05c9f0e015390c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CH6541884956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719b6b660e62828f084ffb9a82dc6f5ac1472a7be122d3f2249b843a61aad85f. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:42Z), 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/CH6541884962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670483e58bb6b2ae9e596b0888e76cdc2f5a9793c131e408ef212067c63811ff. 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/CH6541889645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349419dd2e764d917d4215d57a3479d1ef2c41e64c7a5bb45e8efd720d1602dd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CH6541889646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27467505a32788207fc6f9b89bf55c3efae15efb40d11aceaf6584014383330b. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:51:50Z), 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/CH6541889647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3686bcea0ac48736b97e1376968c652b317363ebaf9601638385ac8a9416b8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/CH6541889648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6583ae52e9495c84f158f57c32375682dfc63b2eb39f0f3e94c61d1276ea69e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CH6541924310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288a5b82ec62bf8e6e8c694e6a0b3798cc371c308185694c2817e7540f2d6e05. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/CH6541924312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc701da51198ba5a1c8fc51930b22050369f98eb2bac743e3a2dce3b74343d6e7. 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/CH6541924314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0c779c7ebf96cdeac2028522d6b5b4d93843c803c9f474b60c6dfd7ec91197. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CH6541924315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aca29e8b326b2ffaf8e542d8d30b5c86936a3ee331bd93a30c9edb72f5f386c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH6541924890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b33bebf99f9559765ab51d766b8c35db9d11e1cfde33778d74979d4a8cddf7. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:14:50Z), 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/CH6541924893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0655f5b6ea5af92cfa870ab7025808a96f164efd1c23c10873bc3ec7ea03995b. 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/CH6541924896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e9583fafdc74f6ceb1d9d1f0f76ff8f0f2538d2a33a0596d87b32ca9bb403e. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/CH6542231341.