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 0x08b006a2613cc768dfad885885d69dab52796276a717260bc1a47f2164f579e1. 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/da88ece5-461d-4c2f-9535-d226f39bceff.json and https://artists.proofprofile.net/proofs/artist/da88ece5-461d-4c2f-9535-d226f39bceff.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 0x0da163385a9446f75656d8976487444552c1f1c93d1116497334d3d97074627e. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/UKXN22159910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890b4fedb5a146660fe5caf354f88977d747ac6e8b6bf8c550cc9b988cdea6bf. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:32Z), 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/BXF852100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9667967642f329a77705277c080b10726a764831c6d8e20199cc16ec584a60b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZNJY2188887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde48c29c935a03103082580608a2d8146d2588d2e50de4849508b4d62451c389. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/BXIV82293872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2ac7313ad8cb3afccb0ec1d7f32b9c4f8734d274ecf1eda58c125af450dd75. 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/BXIV82303579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4882302754b2f03201c0e27d0c442c40a7bf203d1891e9b4c91d47d2f6b5da. 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/BC6P42300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e500a18c4d2259a9cdddfe715b154c4b9164ad76e58ba6e56101db51ac40742. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:40Z), 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/BXIV82373516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe671f88ca21300f27922338f5a74e5b42dd293d0eaecc6d7f922e6c12cfb784d. 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/BCPJV2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca0e79df12888f603773c9db4f2ff10982394d152f9c894e9cbfee2b135eaa5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BXIV82382372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d617d924f9db180ffc81adc8cfb50afb1c5e104634539ebf9dd9960f5a36cfb. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BC6P42300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128702e302b11ef6547f1d3aec878bd99d1adb3f923b8510f591305bc3a4e1ec. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BXIV82322981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f2e9c918520ee1a6b721124e9b0795a24a17ccbccdd1e0519d1339c7d0d4c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXIV82336773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1bd7425a05a0e3a4ec0e623794b04b145ff5fb658a05df23a6c61bc7ca6d4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX6Y62500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45c39f8fdbcdaa26b8a2efb49be646c3a0d51a75a050f4807bbfd4ce2b86894. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRD1E2500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe059997fe94947352c5bfdaa3dffe5b20d05f77cfee245f6f6822dbc1d03367. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXF852100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce9584fd2bef0eb8c7b60973698d9927d4e9ef12f7899232c3f621ad48c28f3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXF852100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ea9aaf88c9c677bb721616eb35190953acf42fc31c4555fd4dcaab5596c9f0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXUBN2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312de641ba694c11ede8ebea48cadbec99285232408a52b23f43cf8635892c50. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BCPJV2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16943476a608c064ce0d37cacfafbd5c1888115a31d420533d36c2923a4644d7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTV32396602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41baeb1a75758215d12b177e9012668bf042fcf429ce60eea5500dd8e9dfa533. 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/BC6P42400007.