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 0x1ee7f9a0d16091ce2d4d2a94a061e6fd9699966cc57dd6b56aa1b9cf169e9a5c. 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/abf21b45-7240-4475-8bbc-e424018b9c78.json and https://artists.proofprofile.net/proofs/artist/abf21b45-7240-4475-8bbc-e424018b9c78.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 0x5c9871ff6716a840ca51a6bb453b9620a75b7956e827449119845f55d91cb423. 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/TCADU1827534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d33b509fbac4fa7dd6c46502c004a5bdc1e1c927f318c357065846e6634347. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZES51897090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84b39fe9c68b098dc9a93a7ae99fe10979c63f404e8f16465e66a0ff80115c4. 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/QZES51897091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921d8d47468117262538b31c77edb67fb84502a272a2c02bf0e8445e6afb3e28. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZES51897092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ee2515c20d1d35f347f2cb5003f14324a3dc1ee98c9a1b489a09507b0c6790. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZES51897094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd926635510d54fdd0347d89b1d92ab0b837d2ba0eb0af887505bd489d298f3f4. 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/QZES51897096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d4d000102f56160bdff38d15f6ba2d625447648fde375718e6f960f80dc8c4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZES51897097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f88c551358572b8cc33ac0ef30f19b284143e77097374ffef9709cf83da1aa3. 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/USA2P2220386.
The Flower, the Bird and the Mountain, Pt.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cba3375abb0af3d390b0b07f80021713a6ed587645fd7d08907d2fab322eee. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:54:46Z), 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/USA2P2220387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f878619020ff087892c78de1c1e7fe82c79abc6306b33c8cd6b8fb195cc030. 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/USA2P2220385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f878619020ff087892c78de1c1e7fe82c79abc6306b33c8cd6b8fb195cc030. 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/USA2P2220385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53de9d31a39fa97176b9513edf6c3bc914fa2946f01f60382e4a496c215aece7. 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/QZPLR2368994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99b4bf0f3d7a0334cad320038c53c1a901a51567ccc7871c740e0df9847d3d0. 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/QZPLR2368997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96b489c3cfcc23538e57a6f7737a5f78fc21f8e96c657ab19edf65cf3b0649e. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZPLR2368999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f498363166a4017080d6aa7cf5bef581a730f1558ff77d55119e10fb7212ee. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/NL8RL2506962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e6d479cf6402b05152cbb6fe0118e5e1d31b5a5d3e1f702cc8756693e6b4fc. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:25Z), 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/NL8RL2506947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8cf92be9f1a027ee3d5f7168c8d14aa4b7125264a7f2ad13210469bb9389e72. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/NL8RL2506949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8bc10370c92f6dcb52728ae526eac732aa428baafd5d720ee4e131c283162a. 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/NL8RL2506950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed883e3eaf768d6fd27231c48cd1cdcf79257b7a24f4a47d8a938133366c9082. 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/NL8RL2506951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc533d0b8cc6da138940c33426187166874bb39321ed58991ff35d9df0a6fe241. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/NL8RL2506956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5bb1c0e5b9a1e933ea3b7d8a160dbf46456a1f4dedd19f7b76d29b1141d924. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/NL8RL2506958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c544dd8f1cfb4adcdcbfdfa418d3322667bdc17ca22234ea0c43fcfb45a8b4. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NL8RL2506959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97efbdf109d75e009e1dd67b7da758506dbe0a2bc70fd7b748957922f2310e19. 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/QZZ7Q2567751.