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 0x0b388956954b8cfb409d2c0989e8d3105dd1fa506222b667897eace8ddd8b5bc. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ac5f9e0-25c2-4c1a-a6b6-ca9526fa196a.json and https://artists.proofprofile.net/proofs/artist/6ac5f9e0-25c2-4c1a-a6b6-ca9526fa196a.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 0x0afc32b7b098abda6cd85d3819d10bbc91331a0223357114624abde1c7c031cc. 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/FR6KO2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4dd4aebcd6491f4b7bc74926fd3511994905fa1b6390ce24ae8f98a3ad4f21. 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/FR6KO2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14edd1dd1388905be2ed586d46439a4c7a63bcae231acc16c8fc55f329a52eef. 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/FR6KO2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75208c2f9ba68436f6e323e56444a8366d38272cf598e5cfa5a3a13203ff38b. 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/FR6KO2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0632437c80d66b5c94d547a340a534a9d3e7943b177cac659e8c812fa351878a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR6KO2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe225557c80f04b23fc1676aa1d62db9a48ffbad02bd9dd0b3fb1bb3af258cc14. 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/FR6KO2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be2c8c4f55a245fed010d1487079b3ff545a604496c09ed468b02bc3d942c58. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR6KO2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf458d0aea8fc5c8855c055ec6142bba3b18c419c84cdf73bbb6fa4eb26b9ec8. 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/FR6KO2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a26c63f238684db5bf82421c62542a9ecfc97c99762e37e98af1a9aec64bb47. 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/FR6KO2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a26c63f238684db5bf82421c62542a9ecfc97c99762e37e98af1a9aec64bb47. 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/FR6KO2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5e8d4183894e4deedd754c24d686bf7227293a58c27554351bcfd77e8ee3ae. 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/FR6KO2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3eab19eb205f76882d8fa2aaa6fe901fe2284c7cc19922b90db388ad331e84. 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/FR6KO2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2cb7cfd76677727fa1f2783dd18336fab256e07f7b6ab4e313b58632f8036a. 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/FR6KO2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7331124397c474230bea5ac6ae7bc08a0c5d3cb05ea0dfd62fea2a99dcc1d246. 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/FR6KO2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b9f37dffae8c9b13a7b58b0b4c4dbcf1073eb586f68b453f7c07b0d8b7778b. 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/FR6KO2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5e8d4183894e4deedd754c24d686bf7227293a58c27554351bcfd77e8ee3ae. 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/FR6KO2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6532b8c8e28bafe5ccb9d2a832b0eaa8c84b8d08613a78559b33db05d94e44e5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6KO2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7331124397c474230bea5ac6ae7bc08a0c5d3cb05ea0dfd62fea2a99dcc1d246. 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/FR6KO2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65043ef909ed0f8bad9309e4b64d4266f8c6562cb4022c8a9fdc384920fab0c3. 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/FR6KO2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2cb7cfd76677727fa1f2783dd18336fab256e07f7b6ab4e313b58632f8036a. 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/FR6KO2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2629d014bb026349c2f0e016890c2c0c727d170eae01fb982517216d1ac60ff9. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/FR6KO2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9c716860ec718346a16f7260acc4d2638de116be46300c1a0d8f55f1cff703. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR6KO2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3eab19eb205f76882d8fa2aaa6fe901fe2284c7cc19922b90db388ad331e84. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR6KO2400017.