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 0xbd668433bdb00d295f40aafac74f4fc276160c23bff37c1498248b52ff5b6abd. 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/146b7e2f-81ad-4c16-8dd9-c541285b8b96.json and https://artists.proofprofile.net/proofs/artist/146b7e2f-81ad-4c16-8dd9-c541285b8b96.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 0x8d4fa75b4d388740b6bc491d4c28278ff953f8bd78ba2ca7e42ddccf68418a52. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7S2452839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49491193e7767da2fe3f5ed05757a36b61922c6e6b9e029ccf0d72a1cd6c4f8f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:40:23Z), 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/QZZ7S2497931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1a07b55c3f9de4c82a8de34c304eb1c40d457d0261d42520bb1a6e776308ba. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:01:47Z), 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/QZZ7S2497926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f6bd1daaba669538d64c5168890611e95c00ff2a611764445197164e263ce9. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ7S2497932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b20108cb39287383983479d34e24cf48ad7e35a29f37eb237239f8f6d1b3eb. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZZ7S2497929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482e4d33eb5a0ba87a3606adc459ac59cc48f0dbb0f807e96ceb031740a14f1e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7S2497934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bceefc99b07e17b1b475b643e27235da7e8146437130303e3ca801e293afa56. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7T2426332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa98996869afd540d0953e5cc49aaee1c75e3cf15945420b67b34558ba33571. 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/QZZ7T2426330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d51d344bdf15e2f424cfb65c5208ef1175539a409e1260e73e963630e17729. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7T2429190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905bad7a4af342ccfbc3776466fd4ed6e7e6bd5b36cb9a33a06c101901991b32. 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/QZZ7T2421962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0186103794bf95a90e5cb43b6bdeef73623e477e2675d6c1c85a488750cae24. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7T2429192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed6daccfd1f9c60654a2ac01bf4fe0428ef7a420a8ada97d7f40403185e9665. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZZ7T2486924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd456e6f75aa52cba0bb90506b4e337571650952ebb6bba5c30e90c4c7221bfac. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7T2486927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbf9946adb4961d433487e4f5a53aa0573c22e80cb982fcdf6642abc2e3c9f7. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZZ7T2486929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814f26626e970d70e49da16e7b2f67348c8ba0067ddd84b0346aa9628fd60c58. 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/QZZ7T2486930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247bef128b10deea34e983bfa44743e11d098e131a66ebe9326a3c5ac424d93b. 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/QZZ7T2486925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcf5f4cda012c91a47761ab6bedca96fe41ca0b8ab462a142a3d696f81c988d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7U2448195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dac25f4e81c5a7eb41cba4955ae76e05c561020e316cd8f970e5abe45c32b12. 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/QZZ7U2448193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed95fabc8698e4419a43ee945dfd26ca5bf85b210d5df7aef193a30a26cf08f1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZZ7U2449453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4394f5641f0c03abe1220c5252ff1aa478b4bd9579a5cfc995cd95e4d7a9e136. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZZ7U2457454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b28126ece2b05998ca83c10ca8b96ace48c07eaa42c64e7a99f3b83bf088e55. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZZ7U2449454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7e4d863a7a7889e98853a58c80116e8440699a0c83b550233df6a256c5d4c3. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZZ7U2445585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47ab6cc1dae3ac8d8f98d5b338764b2c96f239b80639b1ea2a2cc436fd7a633. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZZ7U2461498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69db166107eab7aa2776d44438e0a4c5608239b5a4cd3d115deda8b56876463a. 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/QZZ7U2445847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9c5cf914a12e85b510ca2623850cbdb81b49023bd7564a3be9bff13f7269e9. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZZ7V2439526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5eeeeddb55368dde975cdaf838f8e0ec2b26afabffec2ee838d11aa629169a. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7V2439528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f595d6488bfb5fb5a116080bbb26c748ba3cdc77565920c365a7781474ed691. 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/QZZ7V2439523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c1fdc35ac2e9c872850ab31939d6213f360dc2f26b5c1676fd3289e286b08a. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ7V2437341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999e6e6ad33af9439ef9ed501b94f5d217e43e1cbc71118423b5db6fef93ef1a. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZZ7V2439525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcee889b0317ffa91fd4fd4f5e13d91d3396dec97926d867246583a04f93514. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7V2471579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a6084776d840a2a7ad042df2378d01cf7194eca13c36010ea5a9f7b6a9d0f8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7V2469560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db980cf6de4c1d55cc658ec301c4eeeb1622ff284309f4668b597a79d68617f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7V2473601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb0f244e114bf97e175507095f2acfd5c3e1c371239f55ad8819928ab43ea64. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7V2471581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47b4e6a8ceffaacea863768447ee3ad8b991be0e540c7e7c7aa53be46919c20. Chain 2 (Bitcoin): anchored in block 957957 (2026-07-14T05:10:34Z), 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/QZZ7W2424723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86ed40d7a24840cbcc37b42983a05bdb5e987cd0b24e63d34b734f2d7cc9b36. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZZ7W2422245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa955d1df4c1dbd0e5e40428751ce22a4cd928dd93183b1b61a9c6521a70473c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZZ7W2424724.