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 0x1480e174b6565f34d9a53dd52efdf1e1381571935583c35f30f9d0a57d752e95. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a4723b7-545c-4b8b-b543-af192205fe1d.json and https://artists.proofprofile.net/proofs/artist/2a4723b7-545c-4b8b-b543-af192205fe1d.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 0xe35f8a24f0c79bb74e58fb7d4f9ec7b3e192bb9c41f720a755fe0b772aa2ce32. 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/USHM82081827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adba76d91b213dcb21272babd9461fb09cfa7b74b667dbc92b21ec8f7fffcfb. 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/USX9P2032587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652f678aa90a679ff078aa6e93cd3f118be416c46dc38f473dcaadd75e08229. 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/USX9P2032589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c783ec89dec7f185f96c1028d4296772a0553d751c26e67fa5700dd5a18eac. 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/USX9P2032592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdb28944a3c16b1ef55fa1387a6752895672146c93d7ff00bb3e7f75e3a7799. 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/QZDA52536496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f89860d12b975ff6af52f8656f94b89b33a646051b19931361945b2668ad3e. 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/QZMER2277388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a284d4386380f4c82c96cdc9e6e11f31bc1e405f94749d614dd586665600dda. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMER2277390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08c8cc65d9f80870d89f94952bb1526a24d925df417f748d6d0bec0bff5dd3c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZFZ22299599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ddf343c0a3cc990ee356e2e027cfb84014d5cb32f39541a2af0ab3943d291a. 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/QZMER2277391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf496f1479024d82ee59177a15a62d990e3c30236a916f11f2ca95f08d7a282ad. 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/QZMER2277392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ed9a5e6e9996fbf30fa5d12079dd131dda3ba7b0eb2f4881182ca525804fb37. 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/QZHN82298907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8388d629c0041ae45df5c510bc84132a88a94622fff802d0f3a885dcf6fc674. 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/QZMER2277393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1923d7d9cac0da976520af8a01218de906e60505446a0b05f6d7b419d891be0a. 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/QZMER2277394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436378744c31209b44b6431b25cb01690cf23ea2363a4f946d86b12dd051a212. 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/QZHN42296825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccc12af5707f3c5811776e917cf61060611df294944d09dbb9b065611d56f9f. 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/QZMER2277395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14371cf325eb779b601a80ab5c639b902e42ee85115cab2b52aaa4747abc4b09. 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/QZMER2277396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94998a11b17dd1aef28cc525862ed465361820cac3114c13e7041573fa53d464. 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/QZMER2277397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16567ecd2b2cd376c3510773164c628e9bcb55caab611da14d8e4d9821fe095. 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/QZHNB2207958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87c675dbdf91fc953b0a92039112cc89968f59239633507989cb4dc29324da6. 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/TCAFS2164014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eb4e1586fb2aa3a41b320b7c1d48c52791344f85b0f2e74aac5e8a577bc73a. 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/TCAFS2164068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94013048b4de61b465fa14b231ce5f9f1793718338f9d25efd504be1ee12041b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAFS2164085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3701e2e768b46cf7d69bfc972e42311f4c5054540b903b36644b58b54c05f4. 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/TCAFS2164113.