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 0x1742d0c058313a7dc75cda123cf3c18bc2bfbb592028e8bb86b6a2f0b13b0df0. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/145edcc8-aa1d-45f4-98db-1e6ef39622a7.json and https://artists.proofprofile.net/proofs/artist/145edcc8-aa1d-45f4-98db-1e6ef39622a7.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 0xbc4e3f7029c24f45df3d3d0449c02d47aa55429b56e4c1547846103d2a1f1f8a. 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/USACX1302463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd593ffaac41d709e43db70f9bfc0a17318abd46a66507750a4e2c5337b8a0887. 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/USHM91740210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a892c194868306045031d6ce773dc791db94cdba6387bce5da6c9e51effaf. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/USHM22478189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79455215041f3b7d3a114450195da4788686fa68822797b4a5db1ee1c1f82b85. 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/USHM22478190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9f31c39a59b3164377e412eae172c74497d6d9e1f6fa024f0068c560734150. 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/USDY42388635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d279708819ba536d86f7a3042b8f4ec9fcf99e2ab7b845d0e414beb7d4d807. 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/DEQ022282826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f48faf098ca0564498f5b4f0a235c29183d9403be1284b52be52bdc608bd50. 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/DEQ022282827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0906fc55963c6d00a7fd01deae8b4f32241b3d2a671dea4dfee9c5c8f9df75. 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/QZTB92464426.
NOW. HERE. THIS.: Instrumentals & Acappellas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79455215041f3b7d3a114450195da4788686fa68822797b4a5db1ee1c1f82b85. 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/USHM22478190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8414b586ee7039317cda687e1fa183c4b3d0c42b7a505a9126b9069668c06d89. 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/USX9P2435094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8a892c194868306045031d6ce773dc791db94cdba6387bce5da6c9e51effaf. 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/USHM22478189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62cea4dfbcdee1a997f67ddff3a607a307585e666b6e3c9b3e27ae76a70f1a66. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:22Z), 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/USL4R2432117.
Officer C, Yo We Gotta Put You On! (Maxi-Single)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d425c54718d33c96d1ebd96cb82c74a711ef85744ef9cdb866349d68b9b781e. 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/USACX1800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8701194170f585d785dd5d1e0550f54ff2bdd3449b46af8fd57513b39a3d69d0. 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/USACX2100225.