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 0x01e88aaccd3c379bf05287c7eeac63b658d69c29176e3e12a8905a4b35bb3429. 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/49d68033-f2c0-4332-9e40-c5aa18c1a2b7.json and https://artists.proofprofile.net/proofs/artist/49d68033-f2c0-4332-9e40-c5aa18c1a2b7.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 0x253c40b65b90da61416beb364d6198a655665c9b389179466681dc9e36bde7c4. 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/USRC16908533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb606d5063bfbb6129d54f9303e09e769ea4f8a93106d633f06077193eace6130. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USRC16908537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3693905dd22d30ead780ef07cd9593de19b2a70d3e0757c064774cd52b8edf33. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:41:41Z), 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/USRC16908536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc050050dedda60ee9e3616f90fd18d5fa0783da01be9890cd71e25b800a0bc1e. 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/USRC11600502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a3c3f936f687c1a9a34106ae3bb9bc6f744aa7f2e4c5d8aa7d8fb5cf59cc8d. 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/USRC19901100.
Cuentame Como Paso - La Generacion De Los 70
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f08ba90ad7557fa6e4d1039f04416dde0bd1617019f23e9e98268441efd9c6. 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/USRC17503555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a3c3f936f687c1a9a34106ae3bb9bc6f744aa7f2e4c5d8aa7d8fb5cf59cc8d. 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/USRC19901100.