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 0x751b3be72c0aa1a80f2657b1d80191cd3f3f35fc1d3949312e0eccbfac29b780. 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/db4adbe2-8a02-4e6d-92f1-459377492dd4.json and https://artists.proofprofile.net/proofs/artist/db4adbe2-8a02-4e6d-92f1-459377492dd4.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 0xe211e7b9e6cb24392172273a84aa3703acd0c04904dce73129fbc365052302e3. 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/BX1KG2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4367f63274ada1cbaa7b65249e21fb8dedab3878a1498bf7b0ee04e22df3be8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/BX1KG2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553a253a10226e62a148b92748ac56b6036f1b2005d2a1084fa635ac8fa06621. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BX1KG2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd26d1fb5d9ebf1927482c28548d88e6f2bc4ed52fb2719279bb58fb63fa34f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BX1KG2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4239408c6b854d00068737ff1c4bad544808880e8466dbe45956ff9d90b923c7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BX1KG2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4239408c6b854d00068737ff1c4bad544808880e8466dbe45956ff9d90b923c7. 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/BX1KG2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd26d1fb5d9ebf1927482c28548d88e6f2bc4ed52fb2719279bb58fb63fa34f. 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/BX1KG2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x553a253a10226e62a148b92748ac56b6036f1b2005d2a1084fa635ac8fa06621. 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/BX1KG2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4367f63274ada1cbaa7b65249e21fb8dedab3878a1498bf7b0ee04e22df3be8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX1KG2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe211e7b9e6cb24392172273a84aa3703acd0c04904dce73129fbc365052302e3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX1KG2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd258c4b9f389b91ca96a59e65d21126c2f438d281fcbb7582642506f573e35. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRRTF2400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e165db9f84240f179192bb7bb9d208ef122096654f2566b0af1aca6d37de2f9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRRTF2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7e5a4b0ebb3f2a298e810012e3f54fdc7cdb65f982dc49af77a3e845bb87f7. 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/BRRTF2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3303753b372fb970d32184768dad71d95e4ff9a97e90926aab1fe13f15678053. 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/BRRTF2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0930bdeb7ed02e35a760f3f90b150101c1a30028a37a9b6ab2223d65d2a062bb. 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/BRRTF2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a3881f93847e6ba09bcff0ee365bd90c59859613d2aeaafb431d8efe770670. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRRTF2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1474f2535b1af745f856f4934561abcd3ffd7f438029195cd9ce52b92f05d1. 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/BRRTF2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42880dbd8dae8c4d4ebfd1355abdc311e1ea172b0604373b48b9e549fa1ca8e. 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/BRRTF2300019.