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 0xe25d49be0741c733027588284637e84e291165897a573b4d4019c73f7e86306d. 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/2fb4d2e1-0a01-4ed2-8bbe-d49e41f12053.json and https://artists.proofprofile.net/proofs/artist/2fb4d2e1-0a01-4ed2-8bbe-d49e41f12053.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Thank You for Your Time (2023 Remastered Version)
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 0x861fc533364e8afcfc5cc59c619f316f0f58d1480cc3d725b66985f6170c89e3. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZES62064146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3becc8b541f023ca6bb1c99a3c5c16afc9527354d700b0bb8c17233af795f121. 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/TCAFL2132686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e7c2c34131b74e598b6eadc96bd8dac007a6c8a243aaf4491b8d3e5a19da2d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAFL2132713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9677d7da02127fe79baaca95be17a20f2952fefa4d209f47fb9e37b4d08648. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:09Z), 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/QZK6P1969030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e13dde16476d60c6fbdc989e7c0b2111698799d26b9f02588f8a7b764c66e9. 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/TCAFL2132720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa739bf189ee02e4620f87d33db88798a88975296a96c770d3a195efb44443a53. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:36Z), 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/QZES62064148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd63fc5bcdddb8dabb76aaab644bda2e3af4c7682f8df2ff6e722188944a3cc. 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/TCAFL2132780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afbd3376a1233dab0d50d3ae80aa507a27ae157481acd8de5976ebbd16e57bc. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/TCAFS2137829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae4143321e8b770ff7fa48b6183c720c0452f35a204a6e57bedf79078e8dded. 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/TCAFN2148294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a58f97d53029cc2ccc6fb2acaa1ae14e9a8c4fde51fd6b54ee7b341d0bac854. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAFS2138034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c815458e9c7b88b367b42666b4ce034d744805993128109c757efe98967db2. 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/TCAFS2138116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87873f22cffb3da0b6fbdd5003510536ae4e077405f9e3b6c7af3bda48aa4a8b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:52:55Z), 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/TCAFS2138138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db940ee8c23f0ae6f955d35d6178f00758d89a21d74330fc1cfc58ed79c7b85. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAIA2455028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db940ee8c23f0ae6f955d35d6178f00758d89a21d74330fc1cfc58ed79c7b85. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIA2455028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3becc8b541f023ca6bb1c99a3c5c16afc9527354d700b0bb8c17233af795f121. 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/TCAFL2132686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e7c2c34131b74e598b6eadc96bd8dac007a6c8a243aaf4491b8d3e5a19da2d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:03:59Z), 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/TCAFL2132713.