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 0x22d590dc331335effe6ae8afbf35c501c24e6c25b054653f24b25b17deedafaa. 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/0c64d225-8181-4f5a-ad0b-c3bdbfc34ecf.json and https://artists.proofprofile.net/proofs/artist/0c64d225-8181-4f5a-ad0b-c3bdbfc34ecf.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 0x8efc6b5ababf0c1a69f79d1b01ee5799136a7c8076c84c2aca6bd40c71c8af73. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZFZ22495851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772c7e9344425ca9a5c1627cef173f3724c087861c853da6e505a4583ffac662. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ22564157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e3084452658af2d7ac2ab66eb8fcc36a07a53938225b88e175c0959d33b169. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:25Z), 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/QZFYZ2503743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74f90596fe44a4049cc5e9677738d5c2bec3d1aee4061457b312b1b80eac478. 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/QZFYZ2577153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4483fe21e851d948cb68c61f409cdba270d258359e6da4ed79dc4d799c603ea. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFYZ2578958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991cced9e1f5428a49e352b3a806974370914b54ad789851c78c37ae837f6f8f. 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/QZDA82575074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa6874deef82e9be37a5b0c4ef29428dcdc0074e13da0eeba0e0bf024c312f4. 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/QZES52535492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0541edac5a775c36c3408fbfc5d9ddc74fc67886b70bd53297e3f50cff5e2ffe. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZES82525857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f55629c2d883617607e80cf98aa48e83338cb3d1b7fa9c98c328c024026506c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:48:32Z), 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/QZES82525859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901b8e763da8144ba7ecaa7cfdf4f9b671a805a124d42539373184bab989ac33. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:26:39Z), 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/QZHN82558247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e7d182e1eccda092dfa01db504efb4a6b2b74acf29099ec33bed4aecfefc56. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN82558208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ac25b3af3e0c96ebd9da20213b44ac7642e35f82cb553f962d111e5d7d1855. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHNC2553885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ac25b3af3e0c96ebd9da20213b44ac7642e35f82cb553f962d111e5d7d1855. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/QZHNC2553885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901b8e763da8144ba7ecaa7cfdf4f9b671a805a124d42539373184bab989ac33. 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/QZHN82558247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfca03dee53d0c05ca27764ed846278a1e2428272279c11e8c8cab6e95e2fba. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZK6N2500882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f190b9dd2233423d1ebe93ddf31ecd50af7e4ae8d3126ab8d78c313a0c3b55. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZK6N2500883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e7d182e1eccda092dfa01db504efb4a6b2b74acf29099ec33bed4aecfefc56. 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/QZHN82558208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8dfe6d25336a77058465c997455851e9412f0c3d0a25163ccd0f6de96b8224. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6N2500884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a923e23bae6ff92acfdc76297ed72a14a708b5e9777c5adcfee33ab40a2015f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6N2500885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc062dd1d76ce5cb553e5c85f39c3a4a8e091aa1f1ae7e6cd0d6baab5cfce54d6. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZK6N2500886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556dbe581c5ea2e054fbaf6593b4e0f5b0221d3726e427c5baef45c1242679bf. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6F2535230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb2cdd9abe53995df9ba9157fcacc088fc5ca339baa78589cf0347cfc82c547. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:56Z), 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/QZNWV2503652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6eb46691c6585a4de2e18991dfff04df7d05dbe3ad7ea9fb1f1241e2ddd5148. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZPLS2555915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1b343f5abed5e410447131a800daa5a72d5fafb8d85c825c3ef0119779523c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:56Z), 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/QZNWZ2519136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb2cdd9abe53995df9ba9157fcacc088fc5ca339baa78589cf0347cfc82c547. 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/QZNWV2503652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556dbe581c5ea2e054fbaf6593b4e0f5b0221d3726e427c5baef45c1242679bf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:41Z), 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/QZK6F2535230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870758175a53df6b5e1ddb3e390cc606cbaef37e3033cd008f58376b94ef8bce. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTB62588794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901b515b373ef8748d7137d29c3d6e27444219e4e17ce8dad6f61e3487f1fc7b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWFS2541363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b02e5593765467ed9451fda92d53bd81ca38f8e71a25b22b1a60de3aec82aa1. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7N2586066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd5856497ce2271bb5452e9a47a79ea7e1ea3b42399206ba61b81cb73404e8. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7W2564972.