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 0xbd3a7f9bd8a0a7d07ea7e36d569bd7c3295f0b618c4900ceeac8bead8ac522c6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/67d9cec8-4391-4479-9667-4fed04be6f4f.json and https://artists.proofprofile.net/proofs/artist/67d9cec8-4391-4479-9667-4fed04be6f4f.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 0x702fc27a498d711df8348bb38a5815e70d830ab8b47a1148c2cfaf025d6b0606. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX872232805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ec32ab828bf74e00c9aff16806122ea146d1e3a390ee9f477670a58beb14c7. 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/FRX762298252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15204f010d6a066e278decf143cf23797dd39716aebf82b9735286abe1007727. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX762298589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77982dcfe37a4383a2c3d3aff4b2239aebee89669f38cb2209305c347b6fc400. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/HKG732015521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265f8d4498d51163b22fe330862fa2672fda208325b474229e5317d82787585c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DGA082262930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce6398a94b68314c6534f21e0d37780a82258061ce85f75e486d7e84b53301d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/DGA082263651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0d056e76dad9aa514bb7783e8eca5be945e7eb3d940b9dded0e30aa8f2c2af. 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/FR59R2353018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20db406de101b39c65355a648c4ea021a2e8b3d6151e12f5e8ebe1240f3b515. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/HKG732029045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40de715b043cfd81fea7038833e41ce807fed8b801eb77d8b9e61ed77af47519. 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/FR96X2431404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59bf39d245a1557f57d146648a1b9ef523f8c315a051edd9f257c141b98163fa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282439056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a06fb884a77b354ee89745f504ae121d536b3fc100e63ab78227ab95c2ccb6. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/FRX762435560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2d2c8640f671f47c2f4660d2af1872739839d3c975940931f67e0d4a8c4229. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:38:18Z), 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/DGA0S2417675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf98787c94b7c773ad280259df1804c93800df955e1ca8dbb859e199f63a38917. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:35:33Z), 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/HKG731726525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c0f23420aa4e5e26c66d813f28023162a4b53733b80c37e4b58da6ecfb66c3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/HKG731726526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1ce217f01fab1b6f381a21ab101db701a5a482c994012b1bea8c52d1e75684. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/FRX762298179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa10350e4004ebe7f1b0c45675fb5fb0df4128d61131bc29f72707e1e2d5c6d5. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:42Z), 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/DGA082332491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef2c2c3be2d97efcc07edea473feecad7c329b2b9303459fcf2d096ff74f03b. 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/DGA092315288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a0e721ec6e3c43cad5adecd7a9ea554df04e45615a0bc10f4142be9220387e. 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/DGA0L2305817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3269e18e6321848a702dfee7a3f029a55cf9232151d7a8182785e97d519dae84. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DGA092454891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a245a654222b9ad2ba2b1ab983264ff2b35bc2a840bf2b1ed2a85bb091f0a2. 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/DGA0M2440514.