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 0xb444a80b0327ad0dd01a2a6c848810bc2c780628800c3576cb750088f2466427. 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/385b36f0-8585-4f2b-8b23-cf2bbf9f57d0.json and https://artists.proofprofile.net/proofs/artist/385b36f0-8585-4f2b-8b23-cf2bbf9f57d0.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 0x93199a3201e16f1b21629217b335f8016fe582c8057fe1176a75895e61dc0444. 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/FR9W11412614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c91b69cdc48fcbcd670e3b914cea2848fb954df1b1ae6518c5d73b1ccc9d56c. 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/FR9W11412615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc328ffd22bad3f1f0151a3a49fc212ac1064c4997a100543322e01d5a0d0954. 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/FR9W11412617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3fb4fc1a4fa6532cbbb6e5fbe89a5746e482f1970d0fdd3d778c9d63da486c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR9W11412622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a7efe13f882f009039d75dba1985a89c143e10d6424f4e87de3a25b8f2e2ef. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR9W11412623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd352a27bbb2e82ad2f5aa2a184ca48ff1e8ab4e7de01b3fa22aa79b610d74348. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W11412613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93199a3201e16f1b21629217b335f8016fe582c8057fe1176a75895e61dc0444. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR9W11412614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c91b69cdc48fcbcd670e3b914cea2848fb954df1b1ae6518c5d73b1ccc9d56c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T09:59:37Z), 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/FR9W11412615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146acbb1b1ef2d0712a1a9b1be33b30c8eaeb78d4ea56a678f2bf36ee1155519. 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/DE0021511901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f93072bb9c8d9ade041891061cbc59ec2cc5039e3630470a3846af045b4f280. 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/DE0021511906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cdd9acca35403cdd7d4bee6f8f2fb5e64e8dc2fc9ab62fcb0addf031c15b93. 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/DE0021511903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f79520fe1be628008e69c7763d3ca99a5d979e9c217b6778557dda4f363db25. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DE0021511904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62ee580ee968002b2f94df2667efd599180e9f86ca8be9fd67632037076e281. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:56:55Z), 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/DE0021511905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e259852eae79712bf335f9dd6c56b71f810ea72f139ef6633a90ee21d430b2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:48:34Z), 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/DE0021511910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b095084ebefc9ffb2b8c590f7c0ca73873e686cf1dfec5ad82ba2e9cda99e. 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/QZES71922203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0659020db7be9ffb12755ba19e9b51ccffc59e6efe64731ee3534b55bf921d7b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:12Z), 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/QZES71922204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b698a132bba700d3c2e1069d8731d955183edd1fd07bcab1b92b32ac52a2bd. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZES71922206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabaddc16bab7df8eb5bf86e3676ecc522f38426edc0f4cf9022cb4f044776d34. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZES71922207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e26daa52d59f44d4ee540b22c1733be1b981288488a218dce00c138502e4adb. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZK6J2012818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214489231666bc7ffea1288f05f4d8491de610444c2b084001d2bd7cdfb5cd31. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:44:20Z), 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/FRX872205871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0848e0143ae477a8933c7b17a327ced2d8f3e03f2910c7d6906487889ee9da. 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/FRX872205872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31aa229ebe1277dd7447f1d4d4a1e2f3a3f704c925b6aab9a1d9677ff18c5e2. 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/FRX872205873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0ade2e149cb527d01a3d0a4b171258196477d774e5a1adb3f4e9b0ef9c01c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872205874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776b58e9954eafc49aeee6835ba6b30404c7e0915fc46fb0e737a5ae973ffb0a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:54Z), 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/FRX872205875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e08259c132e2e948d4869f84477fea5bcfe929e0126ec8e2d94001822c7f931. 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/FRX872205876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0848e0143ae477a8933c7b17a327ced2d8f3e03f2910c7d6906487889ee9da. 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/FRX872205872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3378498aeb0bed35cb8ca66987a46ecea2a0d7813b2e32eaa373b6632426ddfe. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:16:49Z), 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/FRX202208645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31aa229ebe1277dd7447f1d4d4a1e2f3a3f704c925b6aab9a1d9677ff18c5e2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX872205873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776b58e9954eafc49aeee6835ba6b30404c7e0915fc46fb0e737a5ae973ffb0a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:08Z), 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/FRX872205875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b4ace021bd07c7616e0778218663095f9f69e5fa9e6d2602002a5f22c7bdf2. 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/FR96X2414558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f31b5210265602b7b518d441667e492012c9c7310fb06bdb236f13f6df7317. 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/DGA072410058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409a7eb49cffd4817d5bbb32098ae14f24648d0021d4d98c6cc8edca2196ab83. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:03:14Z), 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/FRR642401468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef8dcd8e519de95ddc3fddd744c17a63c9549e946ecf47087f59422ea184bdc. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/FRR642401838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b4ace021bd07c7616e0778218663095f9f69e5fa9e6d2602002a5f22c7bdf2. 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/FR96X2414558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32ca93f36abaa05a59eab70b7970f9bee05258fd85e053980fe09dccaa9e200. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR9W12306928.
Just Like Heaven - A Tribute To The Cure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df9816d61da88cbf92718b9b251f6e7eb61d04aca7856517e97f4d63e3974fd. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6XS2202761.
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