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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x679081cab2a6e01a3a4cc60215d706bdd50295e7fe9e6e1123180212aba79d79. 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/96eb30a4-2e79-4386-8920-7b5aa90e356c.json and https://artists.proofprofile.net/proofs/artist/96eb30a4-2e79-4386-8920-7b5aa90e356c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ceec3192370ca8d2ee38e9f0e9f10a74462f265c352ccc486ff9f66cabc8b88. 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/USCGH1948382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0de90bd39a8d18502824a1779fa98c8d62b6cd26e3b3a7040ee22af4d9befd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCGJ1933632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc914d02858f2244b63e8c56436fa3efab32fc5446be49247ae1103937156c045. 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/USL4R1803977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476c2cfadac58a8c23a4913caa7d8cc587fe4e8d29c17772b5a8aab42c77055a. 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/USDY41910043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e12b307c7c0c1745223607a7f672389aac27e64996e23eaf002d7d63d9d3ee2. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USCGH2050721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c95db8faa0641ecc2dfe21403e5d3554f53a5c3827a5b70415eef17c36e2c. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/USHM21924166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a62249d4b69f14e803b453236b5ed370fcfe617f7e521c12b71a82a51031cc. 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/USL4Q1942589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6505c6b2026931bef59cc7d7449a60c31e7e9ac4ecb9c06d203fb9a7cff95ea0. 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/USDY41948417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b3f54e860eecae6d3aaa5d54dc678417528778e1993691b75bd70cfc182bd. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHM91924002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6408f3776ed12ed22c802bba2e5b4f612794a3895022a9573537a1bfc1f8e452. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USHM21991787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d4c15024cd57c5b6d15b386bc86f7f2cb86d4c8babcbed9609363012060b37. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USHM91980936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf13a7632e9ce9b44a5b6584daffc73ea1ff050f30f29479b54f59b8b2a6c994. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USHM81958455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51628fa757e7e6c36f2875c274d1f7128ef72c2a1cb02fd32321e96dd7d6200b. 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/USX9P2376523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c4de739f9cd9a5278d2fa4bcb5101337819c16f9f2006ee9627a62b51c2314. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USL4Q2315033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddd6d823b9e2d6198017ead7b9703521bc37df2c9accfeac546feb8826676e6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM82304497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958a9a2b6830d6c6f7c7665c240cced38ca8d7fe7848857546968955f30c815e. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USCGJ2321621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e65a68cc17d3b4d2ef016a5e598ae40908c170160f3aa73946fbb01b0064614. 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/USL4Q2285648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440063892619e79e03f834b8588eb5eca77097020187d313aeea00f3aa017ad9. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USHM82206699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2741dea198bf2e9fe5748373de50e036a43c0d8bcc34a3e423787e89a092e. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/USDY42251736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d264c79699cbb4d7fe620e3b18d5314e0e2956abafad0bd0dd4609b35c44a9. 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/USL4R2114732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfe7db3335a9a09cdbdfd0ee5217b35a5ca6595d6db2fe4a98e054c7e1a3dae. 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/USHM92152621.
Forever Family (From the Soundtrack to 7 Yards: The Chris Norton Story)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644ef49a844875bd3829d28299a07ff9110687dc635fa81ba3a110cc1e53e639. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/USHM82125786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6336fd8a2bfeb93852f349adb5ea48ab6cdd41ef6c5df7becd7a3a195fffe75. 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/UK6KW2100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52fca0731aea22da625263e2f9a26c692b2a2d23b1446749e54877072611aa7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCGH2191261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0dbc6f0ada67c6973569a519a2d70185c2251b8b4cd2f5adac62540f3aa142. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USL4R2016812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3680539137392b99e2b5cee5747ae25bb86eac0e7dbf528a03afe230b8148a4a. 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/USHM82010326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e12b307c7c0c1745223607a7f672389aac27e64996e23eaf002d7d63d9d3ee2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGH2050721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a62249d4b69f14e803b453236b5ed370fcfe617f7e521c12b71a82a51031cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USL4Q1942589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d4c15024cd57c5b6d15b386bc86f7f2cb86d4c8babcbed9609363012060b37. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM91980936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697b3f54e860eecae6d3aaa5d54dc678417528778e1993691b75bd70cfc182bd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM91924002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf13a7632e9ce9b44a5b6584daffc73ea1ff050f30f29479b54f59b8b2a6c994. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USHM81958455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6408f3776ed12ed22c802bba2e5b4f612794a3895022a9573537a1bfc1f8e452. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USHM21991787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655c95db8faa0641ecc2dfe21403e5d3554f53a5c3827a5b70415eef17c36e2c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USHM21924166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6505c6b2026931bef59cc7d7449a60c31e7e9ac4ecb9c06d203fb9a7cff95ea0. 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/USDY41948417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0de90bd39a8d18502824a1779fa98c8d62b6cd26e3b3a7040ee22af4d9befd. 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/USCGJ1933632.