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 0x23fb73cfe55d4a54df47bf7c2b9dc605cd062a10e3ba3a9fb3fb64940d9e6aa5. 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/2838c5c7-c1f2-4c01-87cc-970b42d90d17.json and https://artists.proofprofile.net/proofs/artist/2838c5c7-c1f2-4c01-87cc-970b42d90d17.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 0x688502bd842f2642c3c71e341944132fc7f7d4187d02c6d2e921c9e255b9d34b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB62473298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb77ec5f151a2826e651764d84e6a0b58b727f1fc17ce7e131c6bb4fd6dba38. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZTB62473299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10f05a12d21936eb26232e077fd7b97188aa0790b819c8890695070d6aeea2f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZTB62473301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd1b5c73d3e9d7daa805058ed72d55f4f38b4178a2aec990fab360c017cf2e2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTB62473302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd626b7dfd63a03321405e18ae0c08c87c0c35db85ccfa2a0b2a9a0c016e012. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTB62473304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72bfa913b34a6dcc69c13aacd6e91e1caee451dba9dfe3dc31e8e891a604deea. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/QZTB62473305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaaac95abc57d769264a86bbc59bb829f39336e6d3b9a11a13ffffe4a9d44026. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB62473308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f8b051e9b57f79bfd78ecdda5a33dd4e40a84ba286059f0f0cc92faa39e5c4. 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/QZTB62473310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb706d44b1f8b851595c594d737fe9ad0c62d73ff8fb0df760e115e9141d35728. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTB62473311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1c7823a548ce7ad7af1c68e1b552fd16586fd07ad8443167729f194132c0e8. 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/QZTB62473312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e50774334d86ed8616d0b4d77332b1f06d76821aa5ba79902d2e1a6df063278. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB62473313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2340aa1c8ce37f7da6240f847c3693e04e7d8691af3d95449c5ca46dfa0f70e3. 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/QZTB62473314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e467a6ee91b11bc4ec72a027c721b84cf0d7c0da1167d98fe1871a649ca960a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTB62473317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d1851b6a944e02f23de5435c72a6c9ed16cc96de905fc08ecf41f0803f8b50. 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/QZTB62473318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c4612c59cabe26e81305ef058411d0732aede3405fb1fde6cd3fb8a89f21fa. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZTB62473320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df6659f39bf3387ff35c1edc9be532f88391015666bfcd82859595faac95de7. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZTBB2447460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295bda997379a7267b56b21d492349ef9004b84ac016ae0cb69508cc2f5520de. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBB2447462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58247b4dd996093008f84f3f2d7327eeda8a2074cf755110887a6acf794135a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZTBB2447465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea078eac09c190e90696b9d0c19fb5edfbb9f81fdc5ba10142091c2623f7ebd. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:11:37Z), 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/QZTBB2447468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaab43da538c51d518e63019c356fc727a12dcb6f13a9190a9b8814bd73f7e72. 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/QZTBB2447476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1be9667538cfedcb891913afbe0ea171ca4d0ba6986dceafa3612eb4c752d2. 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/QZTBB2447480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271b73d8a36c265f2275d5a3d114cf5fdf6d41aa0120f298e34b3b79f0e35bc8. 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/QZTBB2447481.