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 0x47e6d1812b428f7608c514a19a54de5e44c01d0a1af5aa782dcfbb46b177c592. 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/63e61cdb-0ee2-45ad-bc7c-66757f94beff.json and https://artists.proofprofile.net/proofs/artist/63e61cdb-0ee2-45ad-bc7c-66757f94beff.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 0x0d95900e7cc64a3f82bb7609ecc9b658a5c690eb0e4cd4bab6619a36645d69a7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:05:17Z), 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/GXBAV2320259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6170b985597b92b16abdc021b0d3044a1cf5cb2e814f1da06c5af7efdd351. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/SGW502445901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc3820ed24a45d8955c9024374b7fd2d4929b5a13c19df2894a5ada124d3d7d. 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/SGW502495358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7a64bc50272b417aec748f3ddb9dcc2bb983d6f563ebb858be7280a107c1c3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTB72448861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1f250a0db0bb14292e6eb65637b9644d9a0b252f8265d2c9c7bc5cec1f30d6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:05:08Z), 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/GXD7V2494915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb2723561756e1cae180e9aeb813883628464e35c41d4e49129fed19656e3b2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GXBAV2510704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d957a60a3a6a8bb5c41bde6fff6bb9ff63a1eb0f5e507ad6ab7eb790ee92c06. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GXD7V2540856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5f46f7f63f4dcc975aea9d1e59685a3005bade6d165356e265f30f9d62fdff. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/AEA3A2134681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cb92b659b5a62799eaab86a409c49b242c66f4ab8cfe31105a4e549285bf8b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QT5M32568128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6b668aa1abaf7a89bb67fb50366f93a49f05c18144d454a94075eeaa6ac986. 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/QT5M32505638.