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 0x698e6ae64d276a1114c5bb76027f5d30ebbeffcbd273a3162862f0e005c88b29. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c870adb9-dc5a-49ec-9d96-8b7cd6dd1f3a.json and https://artists.proofprofile.net/proofs/artist/c870adb9-dc5a-49ec-9d96-8b7cd6dd1f3a.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 0xdd6dd49440e0feaf23f834c4cbb69c0ea1f78aeeff501a12eb6397bc81dac3fd. 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/CAENV1767076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad59af19bbb2375d1ddc43fcf66731d4741b339ddca612a71b83a020904694c7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BGA412100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb7f1a3a8e99d3b798be767c7fc075f2b6cc291348abe2401546483dba15a8d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:02:11Z), 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/BGA412200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed499319cb23bfc5d3cea7c411ad3e6a543f4bbed94fc4965473bd4cad9d0c5. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:09:07Z), 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/CACWV2316599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d930e797697b7c9e74c1b62e305dada025ec746f6c15386a6b38efb7587734. 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/BGAAX2300452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b6cab5a6821a823573e5fdb1e352d566889eea6b9bc59be8e20e607d870e49. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/BGAAX2300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54770ebfbf433bbd4481a809ecd055e3dc8183323be0a314c93488a3d634279c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BGAAX2300750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d930e797697b7c9e74c1b62e305dada025ec746f6c15386a6b38efb7587734. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BGAAX2300452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eac9d85e0ed61cca3bf6d45da2b5eb186a19d16edd8b192a1f3cbeda44aaeee. 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/BGAAX2300478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f58a7ece8d4562b3ae4d3036ca4f1d37c7f3f8db76bbe91bee52447295dd8f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BGAAX2300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b6cab5a6821a823573e5fdb1e352d566889eea6b9bc59be8e20e607d870e49. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:15:02Z), 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/BGAAX2300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a609fc48126b519d3b9e99f60a91768ab8db1017b8c6c5ebaad2d68b249e4d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/BGAAX2300866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2014624c233d1a0a997eea38be3a414153dfb909aad78cba71b50131a1e5949e. 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/BGAAX2300867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f69622471745b09da87312e393dad1ef6e2040e5b3793a47c9ba1fbce520d34. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:29:32Z), 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/BGAAX2300868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa314f753115db29a98c9bde9d3b0c9a731b2b0e8db5ef11d613c2116b2b60cc5. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:57Z), 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/BGAAX2300870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c1547f4f2da6227f46d306f0691fdf46a31e7299f154921ed6b72ca6cc528e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BGAAX2300871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2cb5dca140ccebb12c604bcd56bc7f814e7342d3e10871ac5d29c8887dc17b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:51:30Z), 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/BGAAX2300872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc470c4c5f6940fe226e7ad362f8965213b13868ca183059afde75c96fbb4976f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/BGAAX2300873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92cf3bd9f2ff1ad17b6d31522bdfe94a98b698e85503c370337c57d9d7b74fd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BGAAX2300874.