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 0x38bb29b7fd0e7793d2c64277af39c6256879504449067e8b46fee400c349a1e5. 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/bed682fb-19ad-48de-a304-e0baa81d5524.json and https://artists.proofprofile.net/proofs/artist/bed682fb-19ad-48de-a304-e0baa81d5524.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 0xf3bd84b207d80f680a1ce2287ca8b8c4a6904781045c82686c26315af46ab844. 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/ITR632200947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3be64510b66a05888c024f53280f7b16952321dec96a1fef84f2c1c66ff7ad. 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/ITR632200377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1add8804df30a73d3be404fa9e6c9389e3caa5ee3f9c2434e850aa37096e268. 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/ITR632300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb76931a3ce6e91b19aa71209fb13d70207680d897bb51aeb5e337f9a4912a87. 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/ITR632300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a3dab63a01d2f5cece522b703b9eba2dc4cc261359f1a1db65e6206829d812. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITR632300537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92597e0e563f3168a2dd6bcaad030788f5d7daf280ef28ec0b0e988505e0750a. 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/ITR632400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac04859bdd48a1fa128c51871d5c791b794d677beddbe55c02417e7d0ad10368. 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/ITR632400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dfac7b496c94513a0ea862bc60e37afd9de86b23e6f5e1df123a3564aaa9777. 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/ITR632400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64298f9f39b820c863cbc15f47e05ac22dfe5b2456f314086861743db7f4973. 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/ITR632400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe160a1a1470e58d1dba880f3d0c89a1193f3aacb8080baa920b47cec2383809. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:57:55Z), 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/ITR632401078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81938c3340181fbbd68df13629e24f9d50b2182183f8a838d05e3f8bd586f42. 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/ITR632401125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccfadbabe2b7aafd844b0b731d6b963cff2b372cbd4a66456a1f1784ead23e0. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:37:30Z), 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/ITR632400971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87c54b372936e56531e63837b3d5913b2fcef144b7d5aeafc0fd4dbb7d3ef0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:51Z), 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/ITR632402675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8a1eb6c90b1648c959439154a1ae85d6b57a6efb42b05f9129a85031a5800a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:01:12Z), 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/ITR632401429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ef8f7234644d6b8c2dc0df73d62d73b1c37524401b17187dcd42beac151e5c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:59:31Z), 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/ITR632501519.