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 0x462e68a0524e22feb27e160ada36cb52e2e067046cea17625e2b76f27b06a147. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8cd385e6-9e89-41f5-b12f-efb07b3e186f.json and https://artists.proofprofile.net/proofs/artist/8cd385e6-9e89-41f5-b12f-efb07b3e186f.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 0xc6f20fd70490e894cbcf0042dd0be433919e743609d054f8b089a4170eb2f5d4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/FR6V80992219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c4764f7bfca9e784b7184f0da1d101be99ffee574765445e83336cf4414c71. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:34Z), 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/FR6V80992220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce56db375a7625dac35ebfad7bb7cdeb20f57a31932086405486d034d2c69383. 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/FR6V80992221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0724f728adf0cf3aa2e5565e33364ac910521325062c21f653ca0ee54be413b8. 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/FR6V80992223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7f17a7b039ad83462f9b5f6dec5cae359f81412f8b38b44cdd9da52e5faeb4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:45:59Z), 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/FR6V80992224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227c4282dcfdfb2c060d8018362219657a5798c0233668784c9d8d1031acd268. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR6V80992225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3dc9e8996a98b8c0fd5958df9ceb0f55e3bd02956d5d555b7ab5b2490291ed. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR6V80992227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc887ccf3420272429d62bb1bbb68607cbd7331bcf48af8bdd4222b062bd14598. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6V80992232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60c0678379cf859e3caea076ef99d6744d3dd8efd7252b627ae8deec5cbc9f0. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/FR6V80992233.
Nearer My God to Thee / Näher, Mein Got Zu Dir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5636c373752987e7db0fbf5597e38eaa01460cd2e68da0631d9100244eb8f0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEBL61250899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529e3b79ec46370a03193b0b11237c3c7b248de164396d1362cfbdabb169550c. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEBL61250901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf289d71b90d42c5c3cdb0e117988d2326eaeef6a69c8420fe661607ef0cf839b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEBL61250902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9301c165ce3830ae5da15bafbaf47da568f3f16543764047d71826d242cbae3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEBL61250903.
On My Way to Heaven / Auf Dem Weg Zum Himmel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc071a00c0ab0a7225e64c308313359f423cab173f8789e7a5e59dcb164001a33. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEBL61250906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52dfba058c76f848db5097b57cdaae362b3061ea94924bd8905301e3c071aff6. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/DEBL61250908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacca8995df3dd8fb12b12c4ebefe7cf20cb1da44a10dca6f2eaca220e8bdb8f0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:01Z), 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/DEBL61250910.