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 0xe2e4e26bf79d44b4e86acaaa69b22c22c5fbc684c6eab33f1677656ebcfceef2. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8c636792-539d-401e-9d65-fa08d0a0455e.json and https://artists.proofprofile.net/proofs/artist/8c636792-539d-401e-9d65-fa08d0a0455e.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 0x2a8169ff42750280c667978633f85fcef9ab70e586ad12735cf369c673421cec. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWU2510196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712b841d9b1abc43760e9209d5f7e73443beee33f9b0f41883028f400c34990a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWU2510197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1bdaf5bd2a81c715024ea54e1ab97463c79116139da2fecfddb02d88b75061. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:14Z), 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/QZNWU2510198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c7b9f44eb195e15329bbd7b7c92f6e0a356d5a3a48fe97243196c3fbc31421. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:17:22Z), 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/QZNWU2510200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7a0732f2105fe7ead0c88442219765439d8745bfecbf711b1db9542fe3ce2c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWU2510201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a5f3da60a16bbaf971f8bff4121c08d1c25e7736db6e546cc12bf10395dff5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWU2510202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c52a581c58fc0f32a5742a1f06b5e1336094612a9eda8f3ecf9952c39b8ebe4. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWU2510204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7fb1a51e0cd8517657aaff582597042d3ac7092218800a2bcb103da23a75ea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWU2510205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d8328a2ce282ffe6825d4f6df4ecf8a222dde8f65cbd9688343bf915689e89. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWU2510213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5cf24cc32b81bd71d475f0d2c6928ece966dd76e461fedc15f777afb917718. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:36:23Z), 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/DEH742516065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266e1dfdc7fa4e6b70a5d89c4b659e2fc3013528e3afa511f4f693315f2f3682. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEH742516076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaa841e41b49358f68bfeaf40574aa500ab5fd23f7346231271f873cbe3bfcb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZWFU2579961.
Rătăcind prin amintiri (Signature Lounge ReVibe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34fa8dda8747c1c48deb93ccaf68aa429310a8c3aa6295b5d53544dd8453449. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ7Q2598675.
Pe ulita dorului (Signature Lounge ReVibe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b650051cdd539727c4e9a38e266cee985f35f08e523f8bbed563286d87c8f9c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QT3F22511103.