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 0x2603b9a62d4dab34de6b3b11a4329aad9bc288d8f01995f45ad3ddc20009e0eb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e8dfcef-3060-4fc8-89fb-bdaff51d0eaa.json and https://artists.proofprofile.net/proofs/artist/4e8dfcef-3060-4fc8-89fb-bdaff51d0eaa.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 0x314a59e5fcc0d770fd7331ef6d0869aff259b680e4acc4f270143f6e831823eb. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/VNA0F2306771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3712c75178d6c81f8351fca85d170cc12c2580cf00999d3fcf15ae1c28f61b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:20:49Z), 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/VNA0F2306747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f73013224104b1daad43cc460cdd36c4f2fa12c5b5456aae79129b3c2179402. 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/VNA0F2306756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5439914691af5a5ba929254587a61fc04984863f84b0e5e0fe45beb6de2d764c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/VNA0F2302248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629221c38738f73d31fbd463e16c6248a6fb740a7a95ec8ca4caac61d303808f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/VNA0F2302250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fcc73791f9d23091171ecf88523a83a1b0767222a1f80bfb6e96af964264d5. 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/VNA0F2302260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c03bb57b2b5b8038ee8c86992f81811ae4fbc5c0f67184922cf49bc90ac189. 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/VNA0F2302225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5982912c7131af359740dcaf46f2f8b38a6252177d273965497ad9b50caf48. 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/VNA0F2302230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2e72bacdafce3f149409662da12db220ebeeb4edabb84e7448990f564d0c61. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:46:28Z), 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/VNA0F2302239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4416a83095b360aacd364b846352902c9d1260f3d6c500509d7402d9a2229a. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/VNA0F2302240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ed5249fa14306eaba2b4980c8f48f3521f412b080bae54163a1c6b573ca392. 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/VNA0F2302242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2194845745dafc23b0921e558e2abccdee8d4c5293c865b749a32e33559f0eae. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/VNA0F2302243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962ee405dd78f6aa684d23bc1c5c678b06000efa5d48be84c185a0c1fc87873c. 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/VNA0F2302269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505b885112b9dce12ea90babd0e372cc4cb64005fd1732a68f7179386597d525. 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/VNA0F2302270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9109bbf00e4886275de27c5936087c4abbc9b471794bb818b24c36a050e696b. 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/VNA0F2302271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deb2d92ad46cebea4560d3ed0caeb1a8b3bfde19ae7745581065be5a7c017a8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/VNA0F2302272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c41c4722f52d91c685ff06f683c5c691ff3dd29a8bd2125719f297f421ebede. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/VNA0F2302273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca9ddda9c644bdb37132f72deb4cc3327650ec46ca764b31da249f55a8fa00c. 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/VNA0F2302252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926664691bef6f03b08bfedf05913eb5d905ef9814c6d842afbf6fd22e4be0df. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:36:03Z), 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/VNA0F2302253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87108d9eeaff91fb5397d1401f9398629972ebde6462e203d07acf5ca748d15. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/VNA0F2302254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde06c1f7191fef7a0bb144eaf0f21c53616451921bbcbfc1356e31e8c6ccbeba. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/VNA0F2327141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b99b28488805e8ef510c64890f6aac56b15ab77ffe3024e1b83478b4422fd6. 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/VNA0F2500405.