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 0x3c96eb03a320445c5c2a9c134bd7023031e73997bc50d8e96114afe1e69e63d0. 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/8497a8a6-d3c6-481d-8b8a-075635ce1950.json and https://artists.proofprofile.net/proofs/artist/8497a8a6-d3c6-481d-8b8a-075635ce1950.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 0x45ddfed1eb68c2ef3c91820cc5a7b2ba6164a55277bb0042eecdf40478b4fca1. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/USHM81622218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6b0adbb266413a8157235303ecefb10dae9d07bf6c6c570818ddb609220e37. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM81622219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5147e8023f6ca8842cf6e6b65dcda3ae54e42ee0ea28c0e191535be5e162d8. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USHM81622220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137e466e5becef916497d9c0809d46d141a768a973a960eeb513aa84343f2a46. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:35:26Z), 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/USHM81622221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473e5fd01cad4fbed1c3fd02c28d61bc1edbbd8e5669f7d6e15e2337f89446b3. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:26:23Z), 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/USCGJ1774293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83217cb845be44e3d1181be13d83a5b6ed436deaeb510872b25ed2a4fcce10f8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:58Z), 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/USCGJ1774295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d5da7bfdf49b93be47c0f009904676f27f860bb027c4b7ef9bbbfbb8451c00. 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/USCGJ1774297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0471297e9dbb7791686aa47925d2e07dbd97e36c2b8d616f66bd0d5ac742f9. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZAPG1894006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76df61472dfb83c82efc7eb50c5f83f16d252af0038da654460379eb9ffbf30. 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/QZES91971410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905c4c1b5a63e2dcf81014cd359a9ebc300f92cae5c65b0491cf8167175dea7c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZFZ62026976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd8a948da358a0986cfcdcca82a655429da86b68e361c5d3563213fd5e9ad0c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:57:51Z), 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/QZFZ32229737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cfe5299691db67a710f528c95c583bc447269d09b7f8ac3014df24cf641ffd. 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/QZES72362766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7897c5514cc14c8f49fb2cc0f19bf3f6935abe949c17cd1c219970575dfb80fc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:53Z), 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/QM24S2303593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafab94fc627e65522fec655191f428b44123bafa211767741dcd873897e8d661. 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/QM24S2304217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1ddf9c1f271a2fa74eb45c73499f258ad037fe574dd0921a5a40293615e425. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QM24S2304295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc2555635dea7fdfb9e95297345d022a2d1f2370c1c577ac8674b94724869fa. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:08:45Z), 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/QM24S2304310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cfe5299691db67a710f528c95c583bc447269d09b7f8ac3014df24cf641ffd. 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/QZES72362766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafab94fc627e65522fec655191f428b44123bafa211767741dcd873897e8d661. 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/QM24S2304217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0bf21b4427934e9656e5fcb6bba3ae42bd4b8118664a93a982e7c9aeb3b0cb. 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/QM24S2304496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cfbbf47c1bf139acc0c8f5509a3cc49fa53a7252819e1f0f741e10b4286e3e. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:06Z), 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/QM24S2304495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1265c86741334c3f03574e2c8d3a48629cccb106792e50585fc7cfc0169fb5ef. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM24S2304494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a66034ac0202d6ef1c484afd4c9d79fe35163c6ccfdc41a237f25f19e815c4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QM24S2304493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453f3e1b4e9f7d6e75a4ec8088c05be1cfe8109e7671fa7f0eb7dd46daf1fba3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM24S2304492.