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 0x670f9f90405fe19ed3c9adc34bb02706da136e72b2cc8cf8040b3844d415a1dc. 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/4c65031a-db1f-4f34-a348-75b3034ee4da.json and https://artists.proofprofile.net/proofs/artist/4c65031a-db1f-4f34-a348-75b3034ee4da.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 0x814d8991bfb5cf4c8b2fca43b8c7372a56047dc20f6616123ca29578280ed4d3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM24S2003806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16340126567a02284d532d0fe9da3a0562bf36cc4e6f794a44366902258d9b00. 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/QZNWT2170622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2903dcb758555bed0784135f81d281cbea012173ba76cfbcfb0f9b3cd21dba. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZRP42103308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9657d804b259b562d2e661620a94b69384869c051734efb3a8bf781fd9d8b76c. 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/QZEQU2203937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c80b7b68b16b7b44982f00d6cc077b734205152dd6ed05d6f5880527264bc26. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:54:39Z), 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/QZMHK2259193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e44e3d5a732f0fac150d3f76f1a5e2f7268697506a4b5940015f58ddb194b6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKZGC2304026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd240805fec1de89d600aa2e8c26916fefaf99cee5fd8ccd59f5cea5e0fdc5eed. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKZGC2304305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a6d899d394761a1bd1d8f71b7b00d18b5c3bdbaa19def5aa2ff75442141547. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/UKZGC2307952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee848e6751b96764976ad285951b44daa0f632860ec42acca00271f7a31090df. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:11:30Z), 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/UKZGC2309906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035672eb1214a05f9e2e67bb7184b433a14f40dfd0488fd81f6c5741f2df2806. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZMHL2066420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45be4c79b981dd5bb6842c56b6690500789224ea194f087035dfd661083703eb. 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/QZTB32253730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe412cbeb0ac4be934a3c380468490d82e5d73a911e743090c7d02cc880ae273e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBWUL2340593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e7b661a21a2ef306a55362a03c179e17a484673847849ff79f80a2c7079728. 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/UKZGC2300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd4717163b9e42c3c9b2633052f10c2de621593b9ae1ce60457439df7fef68c. 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/QZWFP2327975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe412cbeb0ac4be934a3c380468490d82e5d73a911e743090c7d02cc880ae273e. 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/GBWUL2340593.