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 0x2e698757c178c205cd65e06be6bc7e13f9fc8a3b3e7e57962a4ad5a7f228708b. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c246f8a-f1c9-4607-8486-22c79a5a619d.json and https://artists.proofprofile.net/proofs/artist/3c246f8a-f1c9-4607-8486-22c79a5a619d.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 0x3def1e2b860f2a354cec08c7b7ead81aa3ce2578c220aa7abdb95f98c96615a4. 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/FRX202093028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2810742869ae42ece0d0a5e18b0f3cc0346165888340164982c64ab326df53d. 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/CH7812054367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80611ad029dd34b90cf7d18a8e799d248e2b4e41c349f9d810ed87b79bf43054. 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/CH7812052237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976c27481db08770218c8df6600657403a9276f1ea898b281a33d6fb105e0eab. 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/DELJ81874991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531ec4b0909ffd8560ed2522e37077300eaf6dd289101c363dd8f6099fb1f128. 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/DEQ121746035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0881e66724764d8aaf548e09cf8a222025177f395a8b30ee4c344f9ad818e1df. 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/DEQ121746036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ad7763c7632939ea4161826c92391f5584ba8fe7c03587ad28066b30b332c5. 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/DEQ121746037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c470db7afda2d58f56066e74289b6c0b124570cdd546687a2301408b9ecacf. 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/DEQ121746038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28fb08b295cbeacbea350d9d2a65a5886fa49e91ecafe8ac0630b1068cd476c. 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/DEQ121746039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c13d44c3a751ad2454a9157c66c76db3e027838e125a513d4a4d922c6076f7. 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/DEQ121746040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8402493f6324cd7d5d60af92427e11745ab8d7e1f7c98210e2268140e6b098db. 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/DEQ121746041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0fccdcf22018b87cf76c6906f298a7d8c2f98d14fcf713102d347b7ca1e0a3. 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/DEQ121746042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589738e0f6e8a217839cf65d1b08d1cef8c5c3b8990754de28d391a578b939bd. 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/DEQ121746043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d618e41c3bba16974a98bc242ae60709041cc30e52266f13733d9ef422a6ac. 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/DEQ121746044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cce1246b2912cebe39388ecb67f9aeb354fef803fb38ca59ec9c1e6beb50f43. 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/DEQ121746045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf095533dc55523a3ad91585c85d8bc196586fbcbe8885580081d74447998821. 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/DEQ121746046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee16d2518a35c029654a650f68fab68fb8dab47276aa58345aedb192371f936. 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/DEQ121746047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8297d5778b371cdb58582834302c67ff46facb7380863607599ae7cf460eada3. 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/DEQ121746048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4b298b8e7d4a975dd935768935985ea6a2e49659a3f7596eba895a34eea0d7. 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/DEQ121746049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2089cf2c8a2cc2903d8404192b3109f6b8bb6415ebdbdc5b4a6d867202c162. 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/DEQ121746050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d97bb37fb83e700d69d32f3838f95471b42bcb91707bcd8ea4dfe18bdabea0. 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/DEQ121746051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb08592aeb866a3f242b05cfe499b74472bf3e8e12a3845d92e160d7270491dc. 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/DEQ121749340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cc4db1d91716547a8df26783f3913be6e34108f0305146f4fb52302cae6ea6. 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/DEQ121749341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b5602102f04a5a3e931559a5d237ef0c9def0de5301a7a8630e03846398c3a. 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/DEQ121749338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf1b35f3496e465133e184b329b9e4146919e0b0d94c2ffde6a8f6cbaf5ea1d. 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/DEQ121749342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080b6feead88e89fa488d28641774472938976ca1d035d16a4563ccd7fdc5ac1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEQ121749343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2468ee4868f54d1e314c216a38444e05661d51a09ca3f28003075b1748ca53. 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/DEQ121749345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b486284df60e667d4367766c6a12aa58e6819ea16a1be7ed4be67dad173817. 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/DEQ121749346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6308b98b0451864e6874f1e6677a25254b593c34d5a9cd631c57a789a8f5e9cd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEQ121749347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab73b93eda48d1a71e18577ee2a464ff0cd7397aedc57667377b9d1275fc5f2. 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/DEQ121749348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6e6d5b6814b408a360f845d3b980c0bcdd82d65e6b7e28e339fbd46436aca4. 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/DEQ121749351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845768d65ef07bd758827174b8e0dc1ff2b984ec49505f8d22ae764a0b706d9c. 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/DEQ121749352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da6dd2602a89e1a11400a353b72acf7517ca306fad7b401b612a3b083920b61. 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/DEQ121749354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34521141efa6cd588ab9880bcbd4994f9dd9a3a401aae73a53abd1860a14dcba. 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/DEQ121749355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468e93c629136b30881feda30a599973d8eb8f3659352a48f4ebe2667534f9d5. 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/DEVR31700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fccc4d6e5de5476dfd0521dc8e283c5bca85bb70d83f3655ad067a1a1a84379. 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/DEVR31700055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb704132efe5b2cacd360f41fdbf08249b380e97bca5015cb618adbde86449549. 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/DEVR31700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8653508343a28994906cc8312b0dc5ba29373346d99d223c1f9a599a2fc9e0. 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/DEVR31700058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92da9cc4c790ab3e06402e35ea075b4db0ff1580ea81a60fd74365a68b5d5bf0. 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/DEVR31700059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd4472e5c28619137c0407d860f5e6f68d3e0f6bd165947780fefc53346d92b. 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/DEVR31700060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa226bfe7995e0e1afba21fbb80ecb22264a9dccd5554b2d0d1516fd7c68c74. 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/DEVR31700061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3636ff2f05771b29ec3256982b2e5f2c486184e48dc004ccd5711f00512932de. 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/DEVR31700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64e9e73593db2f54401ceb68e7bc7516b275015c2ecc64898e925e19ffee9cd. 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/DEVR31700066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b52e6aba07aaceb5f6e7cd982f164c10d300c59a18ee8b9038ce71276c83137. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEVR31700056.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch