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 0x9be7e1054b72e5b6374f250f1ee7d6b1f01d79f174699703a5d239782abc17b3. 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/ae68c519-f795-43b9-b061-95d8186cdb59.json and https://artists.proofprofile.net/proofs/artist/ae68c519-f795-43b9-b061-95d8186cdb59.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 0x5481b71fd31b8dd1b09c894127a824c61d8ba4088184257ed513fa107b886486. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN61944967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b687d22e3e90c5528be4f09f0b046ff6163752cfd4968357f4901735b050d84. 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/QZHN61944968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f2740a5d3417ebcd97d37ef36402df1af94e467ea7916fddf103ed92efb071. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN61944970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50665fb4ebac2824d53e3cc7059f0896e34e35bb1fd0470dfff902101b61941. 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/QZHN61944971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d9163bc7e8cedd7340fefac814696e01f58e146682527a7bc5ff466412cba5. Chain 2 (Bitcoin): anchored in block 958535 (2026-07-18T09:42:49Z), 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/QZDA42285821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dfbafb07866f10ef1058a2137781ba0ff4063f746fb2b5b5ff753d17a0acf2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA42285822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd501e5c4788e131509356e98bfad87d7b2c440d1c952ba507b9d471259df4ff. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZDA42285823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250329a6e33c0b9a8ba33514fe08b773ac8d99ea543dcbc2c6032db1711c81b2. 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/QZHNA2293033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64eb3774ae93d8be396b223d8ad89bf6aa82c1c058baa5b7e5f156f590109bec. 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/QZTAT2229347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a83c2b8ba082fe11f9bdd973be228aefac6c89e17f33a84505143d7967ded10. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6M2320265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4118c8187a6636d3330ec5d4e39966710249b077877e2d16de11ec65e73cf2. 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/QZK6M2320266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7239fa6490ea9ea4c9be633c7bf4eabd1bbfc5a39511a397859db77bbb62f02. 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/QZK6M2320268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a00ea841320b37b849f1194e3691073c7152a83b783f782f1f7ca905e7cc620. 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/QZK6M2320269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0223945aff9d039ac9a230d35d7fc65e089574c36e0a45593d77aff5471c2b9c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6M2320270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad15286d1c485928cf594f1beae5ab860bfd679b09b1a5c2c8a4f3630edccec6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:23:45Z), 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/QZK6M2320272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b6ffdc4b1956a46f2254fa5503ff7c3d646880085b360f99199a1c1f707be4. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6M2320276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1efa38d2137ae3b5567b4cbc6744914f47b9a55cf40e992d2f1b28434535124. Chain 2 (Bitcoin): anchored in block 957846 (2026-07-13T10:25:43Z), 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/QZWFQ2411626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e382edad763f5286ff6d1622a3b0bf9176215e5f34a1c1a305d895e9cff3989. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3EY2599282.