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 0x6397f319c99e98973c0c7236961b2a7b561dcf3a8633f1acf704161439deded3. 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/38479ade-c00d-41d6-8ddb-4b76e5363f02.json and https://artists.proofprofile.net/proofs/artist/38479ade-c00d-41d6-8ddb-4b76e5363f02.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 0x1d08246718d346c093f52364d6bd11f465e7286009d62cbb94c938cee2f6a514. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEV2349520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa809e25452cf9c912cb0197ab5f600315559f153938a96a3193275ba04145fdf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZJG52327979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094f8b42d3ef48310635a6f2a2077c783561647e2c1346acef75d657da47d790. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEV2349521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dec678057831d89de4c2e1db4675446c841af50578a61ed119129b6cc01e954. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNMW2248540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3272abff66686043b92c8027c25ee654a13c8264852f186557f6771cd7fd44. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZL382397273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499b2817a3e8f10a2139de53c560e37a19f2290274943e68a6aff813bc4a543a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZMEV2349522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f16bb026d059b21b41e47e1de6bf5edb86238046120e5cf43b087a1941722d. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZMEV2349524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823ee27a4a5d894c5a5a3e188a2a9f6895b5984f2c5fc95d9763040b8a909e04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZMEV2349525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5333250024e5ccc029e4e82e018c4455a479c83b8e232237c77876be0fa37d. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZMEV2349526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e462d398ded347f94f9f85a69951fc0316c4f599d68190f32b8c35172895d3c. 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/QZMEV2349527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39963ae5e366224726ab62f441712f0d64a041cb8df7a69f8a886a8f19966a6a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNMV2206778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326959989528b9e437d5551f578c93809b71cd3ff069a2fcd6a1eb69ad31e77d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZMEV2349528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe464eb60dfc353164ad7a211027aa7fe8b712deb8b84a7410c55c636912966aa. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QZNMW2337052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34bbadb2cf7e4872ca7c08f28a4f80cc2a435878d8e028dc603f675acec2451. 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/USLD91759527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a73e733d6819bdb60335da70a0cea01facdff79fb5d04817b90f447f1cb56. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91757000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a280c7755f334398ffe1b9dd6089f780d27ababe6cda759eaef7d63e429973. 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/USLD91751661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7ab52defb4e037648da5737bc07dd32e9c26467339213eb1e1544d1f54786. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91758324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a73e733d6819bdb60335da70a0cea01facdff79fb5d04817b90f447f1cb56. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD91757000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb054eec4729363096125b4d473c35537b1d7317e2f62b6bd745dd66894e17c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLD91756148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583905eb7db9a571cbceab01047e74635860b5cb26bb129b1d165daa15c35e98. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLD91754940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc8cf1f11a541b01626aeed271e8884b39b39a5061e0e810208c571a96303d3. 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/USLD91754097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd017501b1362fcaaf55b81bcc5e0d9705c53de9eb23bf4e759736a21e98cb7e3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD91751857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe464eb60dfc353164ad7a211027aa7fe8b712deb8b84a7410c55c636912966aa. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNMW2337052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe464eb60dfc353164ad7a211027aa7fe8b712deb8b84a7410c55c636912966aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZNMW2337052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f3272abff66686043b92c8027c25ee654a13c8264852f186557f6771cd7fd44. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZL382397273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa809e25452cf9c912cb0197ab5f600315559f153938a96a3193275ba04145fdf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZJG52327979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17a632299d01ab814908f8a07d54204b4e835a1f099f4790302bac500beee6f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNMY2211037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dec678057831d89de4c2e1db4675446c841af50578a61ed119129b6cc01e954. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNMW2248540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39963ae5e366224726ab62f441712f0d64a041cb8df7a69f8a886a8f19966a6a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNMV2206778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8418da8c00755ab423fa312a54f588655f877ed427a7174be3d45f29a655f71. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNMT2247652.