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 0xbbdcddaba453ee4ba6de82aea7cae6cb05b71f0d569a700790b9af08dd13efaf. 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/8f32041a-6fa4-4258-8db3-9683264be73d.json and https://artists.proofprofile.net/proofs/artist/8f32041a-6fa4-4258-8db3-9683264be73d.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 0x580ba99ef9c5a6ec1ae49bc4ae8d59f55d27b8544fa2ac2ca8452c88c76f33ea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEUM72205737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aebebd542c41fb79d031aa728750eb11721889dbea7fc3eac555774a7834a5. 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/DECE72400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aebebd542c41fb79d031aa728750eb11721889dbea7fc3eac555774a7834a5. 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/DECE72400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aebebd542c41fb79d031aa728750eb11721889dbea7fc3eac555774a7834a5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DECE72400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94a501eee89b65acc808461ac1585ffad17ae09ea1ad102c9a9fcb9a7c5c5d8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DECE72401238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aebebd542c41fb79d031aa728750eb11721889dbea7fc3eac555774a7834a5. 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/DECE72400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05de67f131591fe5149996e7940c6d2dc5ba94c5ce490b275a50e1669b8c07b. 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/DEQR42302028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86899a2cffab3b4d2f0e825c05e717a091c8893abe6259d657d422767e3ab466. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DEQR42302065.
HERZBLATT (AUA AUA) - Alexander Eder Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05178cd5222e9f86a645f8767c6c5ca34b780ef063ccc2e38782cdff7fd6d65. 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/CH7812529917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb094fe1633ecf26eb7508dc5fa41b932e78a068ea51f844009067834f9ea9345. 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/DEUM72401242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb094fe1633ecf26eb7508dc5fa41b932e78a068ea51f844009067834f9ea9345. 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/DEUM72401242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41fb003909a9dce3b6268a4e7cb84e7fb55c1772f92ab59f3890e5872790a3b. 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/DEUM72403052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94a501eee89b65acc808461ac1585ffad17ae09ea1ad102c9a9fcb9a7c5c5d8. 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/DECE72401238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48aebebd542c41fb79d031aa728750eb11721889dbea7fc3eac555774a7834a5. 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/DECE72400810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05de67f131591fe5149996e7940c6d2dc5ba94c5ce490b275a50e1669b8c07b. 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/DEQR42302028.