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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 0x755dce09660c5a93e7ff00345a02a3b154a8796e4840915c510a3b376581a888. 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/9cbd1ff0-4a36-46c5-98f5-43d4ee735f1c.json and https://artists.proofprofile.net/proofs/artist/9cbd1ff0-4a36-46c5-98f5-43d4ee735f1c.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 0x3cd3f1cbb31f5725a61a73f0ad573e1783bde7f1a43ad54b5f98b004a87a5018. 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/JPB601800967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f78823d98708046f110f0270287e9b9193a0a9d21f0e6b979bae8a39d17c44. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:26Z), 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/JPB601800920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5855b5bae2928295adc075acb5fe74254a91ade24e2a0a28ea51f1a14f1af29a. 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/JPB601801015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954ee85ffe5cd3d69706747dd117937bbb0810e64951bb4bd29debe92038fbfa. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/JPB601703689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c3d9b5221aa0a448254a9d1ec048ee3c3cd71cd5de8ddf9b2525fc9bab9ea1. 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/JPB601703852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8eee03b4811a2b3834e8c7533108c23d7560c558fce62ed89a20885a6e7189b. 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/JPB601802832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ac644fa940f966554413903489a17c55bc2d207220470caade132ed62118f5. 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/JPB601802836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1857f2349c9d2ac176ab7842e51fc50386ddac40946efa8ba7496417ee741d5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:24:31Z), 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/JPB601802840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b6e1d92edca4898ad06802ed02074872bbcf2d88703ddc42937ba49a6f557e. 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/JPB601902893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadc05839e5bdedc2788bd6696f6f39d7c736737a0a461f20c8e0bb3fa75ed67. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPB601903510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8247295c307729aff5e737ad8afe8a2f876088d99313bdc3416ef0b547349703. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/JPB601903509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e15985de780a0a9e6a01769068b16b6a711b7cc7f3d4667c1529bf82c926b3. 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/JPB601903533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82a785dc79402f430139d00f316be780a87f83618bb7f4893e71a1094b018c5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:52Z), 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/JPB601903504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6c159642a43a9fe6c4094834b3ed9888a39fd37abd4f3ad3e527b655743a45. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:48:22Z), 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/JPB601903508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55df624a9ced08d2258fba6baa4c0d80e548b35353ad605cfa582471c7815fb9. 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/JPB601903513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82969f749fcce2178febdf8bd45f80d5b865536e0f6eacaa5cf01d136468ea7f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:03:39Z), 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/JPB601903505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3167458f3a830eb0d47ea59df895d4bd58d5e5bc9032ba61a5fc9e7135c9d3bf. 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/JPB602001830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae7932766a5387ff677a39f6b101f1263b97aadc2733729f26bb18d4dc8a413. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:21Z), 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/JPB602001880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29dfb66dc98221c8fbd143405a420e5a8c1c8b98f7291e2a00336d1868571b07. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:53Z), 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/JPB602103105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e442135b05a8a40c60e575b9c07f906c2ee2e85047e46919cafa8961edb209. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/JPB602103109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7f541acd36671f86c8d035a2c55b311c69556055459ad3434da2fd585639b3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB601703687.