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 0x05f36e724894b60cb6fbf75db685c16ce3a9d1fb8a45100e0b7810a0ad3d6dc9. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d8cdbe5-50b2-44c1-a51b-9c56df14207a.json and https://artists.proofprofile.net/proofs/artist/1d8cdbe5-50b2-44c1-a51b-9c56df14207a.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 0xc089ac14dbe4fd65cd7e10e2a2be594cd27258bcce8ca507c49afe68cbfd470a. 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/INS931402623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4f5302d70b81bd72473504eeba43f98cc99166ac34b8503c70ff2a3b5ca475. 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/INS931402626.
Punjab Bolda (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d8a2c232ae00012fde392be4389c2286b557f468c8381be016a9b5546a5db8. 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/FR96X1937732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb26089eda3e265f601b0e14b534a9768bc00ca03880e45968ad57ed528bf2f. 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/INS181900865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40b65bd248411c7f6aaf34cac1707892a167c6d1b917f597ff3a45e91a77437. 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/INS181802794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4400cdf5356f2b563a6047d915ef265a97e39004bfefdfe84dced3fca8d19462. 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/INS181702285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698e0d108280ec5fd870844e16fc727f1991a65e7f842ddee5d4cee765adc2f5. 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/INS181601055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5354a75e78cf077759fe73fc3a95d60a253d894504b5d894f5df93c68ca75b6. 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/INS931604332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74e53540072423b7199b9ac7a17e44e8644048f4d374b7dff5776101324c0ba. 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/INS181401727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471f90d2441030431bf6acc4ad1ed2ad5df934b95815e2a39c265162c2614574. 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/US38Y2402754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f12dc5e95d1514bd9ba7abda04d87c666f2df9c048204a044b4dca6696fe58c. 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/US38Y2402756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f6dd1f0092b5a82399d5511d01df24ae34d1eef166354a7987dc42b942a678. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US38Y2402757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93d54d096d729493f653bb0359c5ed0d1c860889ea7be01e48a79201f42ff3. 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/US38Y2402758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c68ce8dc7459d2cd47fc7214f7e6dda1fef3e967e72da620ab05b61e9bba23. 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/US38Y2402759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91076379bdb4759ea3f9bbd024caeecf58a7b90018a5d19bd473b3e3be269815. 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/US38Y2402760.