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 0x6799fd205f7325aab51fcbb4e1c3c2c811b45487eaa2b4789ae944e6323cacd0. 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/6d99a584-ec1f-439a-a8de-52aaad03ddbc.json and https://artists.proofprofile.net/proofs/artist/6d99a584-ec1f-439a-a8de-52aaad03ddbc.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 0xd32bb8b8ddeaca4d9f7a9e0871317a589930b9866c1bdbf88377c211dc8631e8. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:11:54Z), 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/GB8KE2054809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea553e74ce5042807f4230e38f2bdeef5030c117402b620c0c8a80e603ddc76. Chain 2 (Bitcoin): anchored in block 956485 (2026-07-03T10:53:04Z), 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/GB8KE2057716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132f2d3389e7f09ca9ff86a6e388ee43e30c95d6a65a86163053d0e5f3a9b97f. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GB8KE2304381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab38ec8cbb332a1e4171cf457ae94dee165f1a40630d9efc1046f5013bf654eb. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GB8KE2325638.
Annual 2024 - Sampler 1 (Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d34d505482edd0fb34a6ebca1a2be4a9d2338f7d1f86af9411c8eb9ca60174b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB8KE2404718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2536d3010c6c8780b07a43cba078d8e6dc307cd5bff8cf50cb6e306285863465. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM6MZ2448842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcaebc55e6559c64a6c700e5a3579507fdf612877e1756446f28f6de740ae0a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GB8KE2502856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1230e67c304ab181345019fa2ca94ca986803ba0091d86ff2efbe461315335a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:15:00Z), 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/GB8KE2502858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c97d78f962fcf25ddcf61c323f6f47aeca58bcf1c9e6d719bea2dfefed715e. 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/GB8KE2502877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf672edff4ab66d498778a8b8676e709b8784f2f31bc6364717d1c6c0d00830e8. 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/GB8KE2502880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd759548fb9f1e6db8f7478f63efe5a38f3c6ca47767a33862e78d84003017158. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/GB8KE2502884.
The Prescription Is Love - Cliques. Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00017c5ad0bdf0532a6a7c92a8e256185517c16034da7dd81c7dc829f6ac1aa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBCJY2100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5956a169cffceb5a7667fd96f18d30b826f115db438e48ee60cbcd168f4128. 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/GB8KE2406327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ec5d9db68c672a4ce6ca423e4e747fc4d0a1e10ac9e4d2f1004c69c02084ca. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/UK9AA2306903.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch