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 0x053d2adaba5d890f52b6242b0087528b4cf34c0313fd5a05026e88614fc70dad. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dad5edc8-5317-48da-a569-9de0a4785a18.json and https://artists.proofprofile.net/proofs/artist/dad5edc8-5317-48da-a569-9de0a4785a18.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 0x98f9b470b06799174cd80bc0d56c0271cf60e8dcfbc0de0be2d35be8aed7903e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLBC2100381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb505535a33013d1c10253c312246cc3c4c09ea765a6a41691a5c687308ed5. 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/QZLBC2100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a6ad8d9b83733d99943a78574eb751ff2d5fa3e962f1d17ee51801c0c42b45. 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/QZLBC2100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac967f5343ed81b21b2d42a633559fcbb1e521dd06e7d8d2241a30b5462862e3. 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/QZLBC2100382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1544851a72758a79c5868767a863ce37f52fda9750ef6091f781deb6da6eab4c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLBC2100383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2feaa9189f469f50cba830799e05f89a5a6fa725251efca50e5358d0a48b655. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLBC2100384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860e0a43ee309c8c05890d64c995bdd66453b88a800de262d7f833dd0b9b6bcb. 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/QZLBC2100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39366b617adb8b34afc1a8d4a4700c4872fef16620d09032f2cb74ea9395ab7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLBC2100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95099163769f41f204d3872e55290d33920d299ad18b5536bc5a812662607f40. 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/QZLBC2100386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab2178f27269287ccb3c1daf8b33d0a18881fd085ce68cc63d6d6ee9d5bd172. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZLBC2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39366b617adb8b34afc1a8d4a4700c4872fef16620d09032f2cb74ea9395ab7. 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/QZLBC2100356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb505535a33013d1c10253c312246cc3c4c09ea765a6a41691a5c687308ed5. 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/QZLBC2100292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a6ad8d9b83733d99943a78574eb751ff2d5fa3e962f1d17ee51801c0c42b45. 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/QZLBC2100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95d71f1c34f8409e38e67f16ffae1afb4360472e2d1fa612d3d2e68a9918b43. 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/DEVF12000660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1101ec10b1ac7638f2d197de70a536c9d1eea4a5bf27f5d2280dedca72b7255. 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/QZ93L1929100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c77c715287deb650079c70bc5f57bfacd4dae845eb73dca87d9d078ec637d5. 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/DEVF12000661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf420a0c1df800c1b578339f675cb226214b59ba1a80c6dc30aea670f71a6c487. 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/US5ED2405775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a001d013bde12411c71a1bc8a72d7407c51057ceadb8c298ff5cffb763f2b1b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US5ED2405776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb0ce9001549637cc8415b6de5f4cfd586b79ec8779b8105f35e5260a1f43a4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBKS2100088.