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 0xdf26656d56ac268f7f9bb82f02a41145653efe4a0a24e2e7c3df6e38fc44c192. Chain 2 (Bitcoin): anchored in block 953899 (2026-06-16T06:37:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1325e1e7-7964-49ab-8bf2-68ca5a417b89.json and https://artists.proofprofile.net/proofs/artist/1325e1e7-7964-49ab-8bf2-68ca5a417b89.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 0x1fe7c14df85b5df2d4313b109f4fd71bfe71c1f37124db0be7257246bbbd1e30. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITR2K2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf72c35570b79e9fa4e483f0141bfe828edac1930eb98f837b7e59682b3aafd. 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/ITR2K2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf0e3d083c2d4befb8b3021d24545560a821249b81e80e95aa8ed910386414c. 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/CHB701400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f610f0d3eed8bdabfab929c91d16329b2ea9c046067c9e3d2c46efe2fe463d. 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/CHB701400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b3196c3093343d1faafa01efb35fd7ccce11a0712c0700b00a1a78a4b3099. 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/CHB701400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d19394038b6d6ca83d43c9694f152b7d2bdfa5cc889ba6ead64c2c57ebd624. 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/CHB701400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6feb3aa54489007ca1fb33a6438e9e8be07deeb50327391cb4efa3199e3729cf. 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/CHB701400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1edc3ee11af4647e0f1fa40e2f3f6cce6b92a14ad1b4630148c56990b2366b8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CHB701400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6728f58287003704723b7c3c325756758409f510c5218a77868c33ecf8572c68. 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/CHB701400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6811166b8e4f5d73ac4b2520faa8bb84514281c21c1e1e67609a0b70ce3fa4. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/CHB701400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6053595b92d81629e0e53b2dab00133b948f2b7c6ebf638a63d95c59ed06c3. 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/SE3Y71300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6d9433be35749784bba9f3170263e7dd15986cd10355c802cb9fee2370abdb. 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/SE3Y71300602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800039ca7826752c24120a56d01be29c1e164cdab473382c970c867c051c7b13. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE3Y71300603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4c084bba26f0f0ee4b3b5c36a7ae8e5c2a6eebd0e0e9786df39860ad7d475e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE3Y71300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac40df7580820512f4b4ece5f444b0ca89085311df4c39fc7db8ed35d3e75c2. 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/SE3Y71300607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6408c17f08aa67484f3ec993a80468c5830ea996b31c07ea5ac1264eaee37f7. 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/SE3Y71300608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c8142ebd43c062fd502ab2c43d05ac999c2241b9338a20021ae66d94284b21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE3Y71300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d41fc069c1cc5776340bf9acf60708414cc273ce4e44ed7adb4b7bebe7139ab. 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/SE3Y71300610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ca13696e4b03188cc7521400330a98a13dcb87dde63b2d7241e749544a4909. 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/SE3Y71300612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a1fe0e67d783c6a149b1a41b9aee1d9925ea91b739341159363b1de73d8e85. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE3XQ1700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d6f5c151736ed8337eb108ff4e19ceff6b07ea11ba7a31f00c08fd23cd6267. 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/SE3XQ1700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c42fb52ace8b3251231597cccbb06d9db07574b4833651b5c19722e940627. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE4MF2200375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57b32ceec8034c9d5091b190db4d92fd9726e1c1b8c9853a14f93c30096cc23. 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/SE4MF2200401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06f9babd1d90a21ba0564a7656e8b8ff0b642041f8a7abc06d82402aa7fbfa8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE4MF2200378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13471ddff26cba8724d8013ba8a420f866b6b1484c7109359cf1dbd07ee7255. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE4MF2200383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb209b7cb15d76e003bfed395616de53dfccc5ef8e04d6af3a33e0df22cd59666. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE4MF2200402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96822bf7293ca2218242a6d21ff0426d0ba95e77044a3a5aa283bcccd7e58ad3. 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/USWB11700457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ded2e3c59b6048e97f6bd84581058318663fe22575f3245f9ffea1aac9294a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEYYG1600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0222d099991073b8d28ff853ad5f714bf95df3b94b2184e9f0e9f40c77f7d247. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEYYG1600104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb9399a9aef66ab6f2b0e991b3239c5e7a497efa79ea1d0e603d971c5fcdc6a. 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/SEYYG1600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06f9babd1d90a21ba0564a7656e8b8ff0b642041f8a7abc06d82402aa7fbfa8. 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/SE4MF2200378.