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 0x9656cbf7e8051c2f2351358e55688df9a57bbedb2a62e87fab2d54ed4710e132. 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/a12f0270-f90a-4118-9055-a8337567bc0c.json and https://artists.proofprofile.net/proofs/artist/a12f0270-f90a-4118-9055-a8337567bc0c.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 0x6aa6aa133c15e132e1f7f30cd935cd0b10268672b1a85f09987884bd0ed792c0. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/GBKPL1980908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef25bc74ac7211fa95ed7fe3575c47091970f6e11a183054e6b942cdd4e1b26. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:47:56Z), 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/GB8MX2101071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248c79611a141b2eff113bec219d4b7c34c70bc61ecf0590d06a69b466a71d27. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/GB8MX2100901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747837386dd9ec077ea68c67e87a06baed44bf69afe1a3e4c397bc4129da044f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBGLW2300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba80eb176c53057fb484042a3457b343472039131f8b5542df13a32f6d7f6ba. 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/GBGLW2300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13450f84c9fc61c8193f5a10073f7c013234ed6dd8f0161ebf528722db78158a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GBGLW2300193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb2b27d36c86c8eaffac58347fb3e1c5a7e796aeac8c7b4ea2df9640118bcfe. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GBGLW2300188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c602374fdf0537c8b92209822817b0dddb87cfcfcf116aeb371ce605c81bcc3. 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/GBGLW2300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747837386dd9ec077ea68c67e87a06baed44bf69afe1a3e4c397bc4129da044f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GBGLW2300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850488f898c4b70d2d5b94323622d01ee1911ffde8cf51cbdb781d51d76d0a8c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/GBGLW2300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6ace562a860f43712651316ef8a372505774e298e9664f58c293c25a955e32. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/GBGLW2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f70af0d7a3201fcc4ec95dde3b01b2aff6a90730804eab9432609e47095b958. 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/GBGLW2400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335f94bbcf34ae27caf47a7e22e9d0e21e1e294fc587b53e13a3693355028fd3. 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/GBGLW2400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d00e1b0c3615633d10a28162af5bdb56a916565c4941dadbea0abd84441138a. 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/GBGLW2400569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca1e9a95ef9505513ce0423fe5f30f672ebab77592ac252ceac12616cc605b1. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:56:58Z), 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/GBGLW2400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6b104033c2c52de78196137e816488822ac86be3e2e1c09d523cc8859c99ab. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:10:17Z), 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/GBGLW2400574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afbd3f9a49139e0d88f53529307474db17f89cb1fb1ab277d685f37affa2980. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM72201969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddaca3b4088b689308b45f8333c0bf74f24b5dac549502c5b4f676e772ca85f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEG932003543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3099c6c3f30edb41f19095c69d7fc025be6ec9336844ebc751536bca84b59e8c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DEG932003546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109b75b74d6dc0845ffe99589421786b358b4f38f8a2c4b07ff712a67fb95923. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEG932003548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f553088f9ea4056647dde094cc4ede755c3ae698b15fdfa358099f43502a31. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKW3Z2102104.