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 0xdf0f29d810dcc6bcd425b9eb4335a32968f090b9e1f3ed3b2bac4d86caa182f2. 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/7d3e5d98-4091-4dba-9d74-ed32a55a12a6.json and https://artists.proofprofile.net/proofs/artist/7d3e5d98-4091-4dba-9d74-ed32a55a12a6.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 0x0d873f632ce29afd3147a4abbcb0fecaa42d170590cdf4b7c2472fcfbbf017c5. 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/INS172308965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0247b65afc88c4a0eec35fc4d75434303d55cfbbf8853d24f5a85d339b9f632c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRP7S2000420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09c5aa5325eadd4c3bda78f4ce26cc7b0b796815832f4085958b552eaa88809. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFS2154384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc944bfe9603f91ffc0c390c5159f96a541a78509c7f738263188534192d297d8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHNB2027248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3a0cbcb522bc724bd481c72e302fe7ec03f866522affd99b84d404fdaffe04. 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/QZFZ72178930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d47391776c5d4db4837692ce6a7adb82bb1d9e23161496e85c40724415aab. 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/INUM72400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95888b53011de5c9611b01b60731b0538d994d06d6923e8ba3ce7557a05444e. 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/TCAGB2204967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa796a326775b3a33c0a9536283fcb1d1316340dd1bce7b86c9829db2e78a5. 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/TCAFU2119652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb493f2d87938ba5d7ee047fc1d35ecfdc46aa1f6219ea7aa38c142fc1dc47973. 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/TCAFQ2175676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8b75960079ce6af172adea1276129b30c174f7f71e81398ac48f24f78e20e3. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAFP2180354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64788721a81e1f46c9eb26c1789e5375aa91ce420ff41d981d4d4cf6555161b. 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/TCAFN2148905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e38915d23b893fac2123068995594c30216f52f565963f6efd926bd058b0735. 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/TCAFI2191019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528e0377e77be42b33a5d6e12ae5d12a4797ee76523fdc94d061f2a374a349ed. 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/QMFME2071429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce195da3658328cfeac073e63a7b5fa5254a7016416ff2a01e51c624494e29c. 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/TCAFE2023175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0cca17d2da8f554d0a060c1d10ee27b87092571923879beeaa93d033ab58cf. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INUM72302832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd37454f051546d01cd02106c071d26b35f1d2435043fe4c227572de35da5e1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/INO132102029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28453fa98dc6e858aa22b89a7ca60119a4b07501d8be9e1d9e24008b06e39425. 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/QM6N22478868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd2519acd4349b718b1072ee3ae7f2e035c1dfdd7ca5a4f876e0b59293548a5. 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/QM6MZ2435759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac60617f75a355b35bbaecc0b73796973a557ce7572dab64a09622d3658f6349. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ62454141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59cb4a97bf3899ce94b4f581713f5467e657e9c5a6f13d185c9ced0c59e21f7. 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/INUM72301517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c09b6e9b0067caed6e367df825d39a51e787a26d3c79f731c9497e2ae250a16. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/INM7Q2305598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c59fe489bacd4a3ab4dcc96c5d52f9cf3b3d33c0c20d30fdd2e4967c048b94. 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/INM7Q2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3975c408fd3598df82f275dc3d6ee930e44bc989a6c5a547830810050ceea1. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USLZJ2117729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fde78149c11d15e47293da18f1ed7f23a6fea887d67f6801b2b2e9ee21239d. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCAEU2054187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4718ee03d6b3cbdd65602d178152691d105a3bfade7590950fc1793511c000. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZHN71950353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1437fd059d8cc701fe63b92360abe7c3cffd5c7c4ea2bbb21d4841fe1aad187b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ21940950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f018c7f061414eef6b599db2320b91173d14b8ccd683581ee1e893cf07c444. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA61986398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69427af94a184d91fe8d7854be8cb50803997d8fb73fea87ca2b0b7eee860d2. 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/FRX202091139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d47391776c5d4db4837692ce6a7adb82bb1d9e23161496e85c40724415aab. 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/INUM72400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b56868db756da73c3dfe88e2c7eef48a829d5ae8436c7aec9e8aeecf5cc05d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAGI2242578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d92b0756685766b9d972fcc9ae83946c73c67291ee88eee59110d888a121e56. 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/TCAGI2242582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47631c3ffc2938d600630a654cecd8aebb1de718d63b0bb2cb5e3d6226090092. 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/TCAGI2242585.