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 0x032c972c79ec17b0da2caac7a6f15d5f32a762bf76b86f3d29efdda915c51e9a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/49d968d3-3e10-4f13-95a6-392b6cf97ecb.json and https://artists.proofprofile.net/proofs/artist/49d968d3-3e10-4f13-95a6-392b6cf97ecb.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 0x31c735d5d19b68bd53ac25a469e8c23ff4740c2bbaa5d0aed063236d1c16090a. 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/GXD7G2426291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab84ca2754612b8fa61c1fb7a7933c62e560bc87666b569ec44c86f6995b6ea3. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:12Z), 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/GXD7G2426285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb152c9fc71bf2fd7d96aa4781f7c36ee077414136e83260f6052ac815c758b65. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXD7G2336276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a23e3b772e6be107c04b1e16c4463919de7a81ab14cc9774e5f750768e41d97. 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/GXD7V2380900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2986733b69f27968e00ba7bfbe01bb32edb7ee7d634459140780883874692d. 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/GXBAV2296972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1806b7b62d140da23deb29b911ae2614010602fca6360dad48769d0693ec6b0e. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:00:00Z), 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/GXD7V2246535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3e5f8415e1a9751294ec449e2a7de5b0b683c1b0370b69b5adaa5014747854. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GXD7V2240475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e4dbde7153d05b805ebaba0b80abbde43a853e12e234ca6c35eb9ea7219a08. 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/GXD7V2225910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5af8cd76d8fa14c6a4de22b2cf001a10b594cf55b7564a1ac38673591c05c2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXD7V2251680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a49d961797732a30245423e1791a15f1c760f4a3c3ecb5391633e4d3ae8b52. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXD7V2425089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e87c14a05593f20678f1e1768803d2329537ffb7ae1078145a7c068c901e1. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GXD7V2459842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1880a272c759ddef358fa3d99a13d7fde3e46237675b5ca7e898b519d8d98d4d. 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/GXD7V2429322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaa1c31b4fb401b88c8daa07f9e002ddff9b3ca664ec395f867146208170cc0. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GXD7V2426505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63de4c7d90587fcfd30ced1fcb16755dfb09208668432911ef2922a74826c94b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:19Z), 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/GXD7V2451900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25fae97119c25d94b64e3640c33cbe370ac22eb27133cd082a94224b3b794eb. 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/GXD7V2480469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e35984ccdd714519cbac2b37ee9716036f14a3d3a25633e8ae771959c928d0. 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/AEA3A2412571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf750d52bac26e870f746bf44ef653d8e0b8ce2d168262175c13d9227e56937e4. 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/GXD7V2588868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f51c52ad962cada75e4af1fff6d3debdd6dcf0a2ff6497474c8e9f2fef34b2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/AEA3A2535567.