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 0x18126fae5fc4f9681f2a7769d1d280a57d24464c55f79bdf0eda3b36ddea5821. 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/73fc11d1-699c-49b9-870d-f24e47d0351c.json and https://artists.proofprofile.net/proofs/artist/73fc11d1-699c-49b9-870d-f24e47d0351c.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 0xed9d3e1deba33741ad3ea48ba29a7247f495ea7e051c1116e39bf2620b62269a. 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/KRB472000940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c45d9f7ae986853fd37d40df3fac8a93277ea7b63d485fc88db84c83c6df60. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KRB472001099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9055e49913e2af85362645eee27680c46083e2240499af371c347aad7d6d2e49. 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/KRB472100896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14718173cb882cce80405a5d75742b7217cd8fc41b70bd36b93ea4376dfc8e17. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRA382206373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6cd541be232d216f61436dab4973756db94afe2d0582efdf1ca35f50dce99b. 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/KRA382208132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe801984e234213c8c8b734941d96ca5c33541e13665cf968e9ea919c6d41db25. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/KRA382208964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4703511f1690113c19c3c6462cafd246b3e4f8e17ad7b3a52fcf35c6ae2b9af7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/KSA002302388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358e7e2ab0eb1e56e0426cd173be181c3c914403a416948c33c349731edea611. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/KSA002583540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92409063d9d320db98419f800ca306b6128f117560c810550d004102ae0cfcd7. 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/KSA002583542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7d83cc1c52c3604bd95ffd25face9b8be64131f3c79a8fcebe49744680280e. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/KRNAR2233637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae341fc052b137df059613d8a24d16c4b7360e243e78f2f6f9444104ab89704a. 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/KRA382301488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855aeb5095468c797e48c9453450547db7f419b09fc1cb4565c81029f52052b4. 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/KRA382301491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ec9b452358ab89d5b20f5d8989f08677863b055c81c3f006c4c85c8c361abc. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/KRA382302295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c0cd1de433ee353ccd861d7080d9fc3594c7fb92b36a767983ddb6463ff0ef. 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/USHM91845217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65645b7e69d914e4352d196eac355900f09df631d8f6dfc0093ba3ce8f2ac9fb. 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/QZF452001205.