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 0x1b084486a2fde938cbab172f02be5dccdef32a4af4abb5e670cec31d1f24a35b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5712a547-004e-4933-9466-5676cbb1815d.json and https://artists.proofprofile.net/proofs/artist/5712a547-004e-4933-9466-5676cbb1815d.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 0xfe9177e7dae7be13adcdd043ed8e0ec6b5d8c9a5b921e12b67e17a492737a9d0. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:06:34Z), 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/GXHG92526551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bc278d83f9fd8e7f9250f9d48c7d2b91d9eafcae22551a13a12f894c9ff112. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GXHG92526677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135dcfc1bf639e5510df63c0a9b7acaac77ac98145bff32622a38d4dd748b0d9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHG92526332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34349d3906f7184e034aa5c18e5ba317f3da44dafc390f7520f53c3be22952ba. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXHG92526408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b60159559bbb45dc0998322b70deefe2a27775cc7e1ac807d17cb4fcb138eee. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GXHG92526838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe5621cb0242c19665ede5f7a5e6e0f863eb3a6f908d3146195dcb3e7d233e4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHG92526278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3241759e19745726856fe5782ad284c1e5cafa2ee2322f3d372c53cff6848698. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/GXHG92526514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb988bf6ad223daf1b64cb8a57b3ade619e14586d83ba9250d4f993c5f70721d8. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/GXHG92526353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c9ceb8d9b8520872832dbd98039f779cb0656dfe6b250525fb2dfc5693fe51. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXHG92526709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dba4301d0981c3dcbee4e75d6b9bb0de4b859edc0c0aa57946d409eaada66ba. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHG92526633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6fa39e67b1a9abed27bb878c59a6455b176f5f97ac56ffbdf42a659a3f29500. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GXHG92526285.