thumb|Lechuguilla Cave, New Mexico, United States Caves and caverns are natural voids under the surface of the Earth and have also been observed in other rocky worlds (e.g., on Mars). Caves often for
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 0xbff91643fcbb0dadf0094709a544f8f7e8ce43f00fad234917ef39e1bdd18955. 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/6f60a7fe-51f2-4167-ba61-cff5e5dc9a8a.json and https://artists.proofprofile.net/proofs/artist/6f60a7fe-51f2-4167-ba61-cff5e5dc9a8a.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 0x633749d02afd9f4bbab65b6c746d6c808521016219f10ceb6a48c9f3d3d89137. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:36:38Z), 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/BXIV82263825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e881b4cd6eb7d08e0ab51d2ce3a7adc215c908a9fb7c0261542e65a9532275. 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/BXO4D2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ef2d32c36caeb52f346ef1c6013f702c86cac2adfcc9198720842ab99dc8f1. 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/BXO4D2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14efe64a6a556bcd1bc5ddaccbd9a48828f3318b1c89d499e734c5399d45d939. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBWUL2281629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5905ccd2a517508717d012118bb352e385f8e5733d1fce8570cbc014078d17c9. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BXIV82285693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae35ae65e8807668de826eb1a4ad1fba5acb6b4095ece0114211ccd618d44a95. 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/BXIV82285039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3286a72e01c4f619687907d4bc97f36ab024770084ff9f28f0a9bb47d7e86007. 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/BXIV82201982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6fde7da156e03c22892cc1e7c74afd312e8471d492fae2a0d53fb79109de2d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:31Z), 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/BXIV82231914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347ed91b341d50a9f321eddc5443489449818b65f955833aad85bce46212dbdc. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BXIV82292273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f2f782909d26b04537ec568fa7d42a875ede7a3a5b24e65b75c9c2ff6acea8. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BXIV82278884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a58a8ea03e56049f152a05fbbdb0027b61337a3f7aa0a6b128ea5c2012963d. 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/BXIV82251474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e45e310e594f878c1e609beaea6289de498efc90b38ff729e4263858dbca3a1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:43:25Z), 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/BXIV82275379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7155917aab0621b7651bbf4ac6109b7785e86696d247907f62ddb56887c41a. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/BXIV82272551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dd33f8029cdec4cd80ec34de459bd89533cdf756c0c734c712df13cee451bf. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BXIV82228938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dca69b8835b28b0091e19c51b7e228052ff45f19099be8f87073fe9cbcbc11b. 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/BXIV82236567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf8d66741751436f6ebef54769d985f40426e1ea7d1b332ffcf476dac21f2d8. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BXIV82250453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ca431df73a9c13ca4e983aacb5d228213d5a883cda2217767174fddfbad324. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BXIV82306324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b67d570895ee8e5c89bf20cc855ec218072f3f72c2a81ce6a367b182d97e88a. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/BC6M22300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62872865a1b6d715bc1e30cba1194774e089a37b2cece1d0204e4cc2dc41b790. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXIV82305915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0405f57025ce8dc4ec07483c4b62e2327766c1e74c4433a8935cf89a46f7cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXIV82371116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82618962af0123c95555a8bb366c6b6d797cd9f857132bf582570ecde6fc2d28. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BXIV82355885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180708f03bebbce0a443039d3166cedcd6960516ea2c9b59cf0d25514d7e6bcb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BXIV82372239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159cbc45ff63c99387e952c795a29c310058dd72beed2e0526a2d939a54eba51. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BXIV82422237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387c5a1d45c82dec93008963250a4904c77e8fe3e90e92c3dad9ab7c2f61c558. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:34:33Z), 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/BXIV82412030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0681cf2efd6c95fc747d5c122b2473599befcb80f07f7a82dcc14506cacf0c40. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXIV82474551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802518a634fd5af95df60e20600d477cbd38b4ed537cba978aa752b3115f4fb4. 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/BXIV82497278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde506f4afbe77100b5ed91c6d5e3c6ef9801fb2c46f88e359c89dc002cbddc80. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BXIV82475346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4843ec46dfc2115bfbfc055e1115fba09ccfd09cc6e53f7b8d1413cdcbf61c34. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BC6M22417255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64d8116f633895e8159ced92af4d32be3361a8cfeb431fe68630d668789f88. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BC6M22417254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147d5ba76820cb283b4b6e3d07e058f2defb0a0708b030678e4cf8b947087a2e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:14:06Z), 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/BC6M22417252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a246af99a28a00603c434a7e8a4a472b16fc8d27f3e441c305fa90f38d7692. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BC6M22417251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb030950d3861ee8f89dc85aef8e638a784ef802c0438247077e0cf3f40a62a86. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BC6M22417250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deaf3c448f81687b553d24fd1ea5cee39e4ab46df8e15e36026e9d9b24fa283. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BC6M22417249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe290a18d56ff2496cf8cd34f0dbfda8c85774b1236e099c908e53a30095eb5a0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BC6M22417248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9040daee817fefca4f373dd3f5a28767f311550ee8563e2e399232ea5116a5b. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BC6M22417247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b7fec2d68c2d227c81ba845b3232f94780d9773fb854fbfb97f174c8aca91. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BC6M22417246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f1ce5f7ff250f1013ebad28a2b9910268e9614e1351b09cc253a953586e461. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BC6M22417245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c43f12dcfaa52e2dc4d8c20134ca7ecea098f42a646f5322c6d89b48144de83. 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/BC6M22417242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9087c662dfc6341ca7e52a286d12b7cce114a3cae83f033781e3b7e37ef1efda. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/BC6M22417241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bff57659aa16dc283cc28be9b4a1a2aa31a80e193b49d9626f81170287ca1d. 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/BXIV82425106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7fcdd93c0db643dee58c1f0fb318030c23c6475254dde8cd018bce2077b0de. 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/BXW602300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53a5e919fe71df6fd36dd91652f2209deb657c409dd68dab94c963c0757c5da. 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/BCDFI2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb602c3033912cdfce470c6ca2a7a790eec7e97adc80abcb7882ca069a5eceeb4. 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/BXJK02300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec237e4ed55553cf5d78fbf2080723192d07de4248bab8dd6fd0cba918ddd74. 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/BCM9A2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a58456118569bc08bf8c05f1c689d54b450e9996e730c4ba842f31cefa50b53. 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/NL8RL2453592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18965f61a8000c72fb6a62610968bc9d60b2e10117079fcd90cf948321b3a076. 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/BRC1S2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2deed6fb2d76f42db3dd26a5c95b9f52ea5658d8516fe2e372ceb03ab80dc2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BX6Y62300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba340d18808f12a5357084683e81676a1d93649d7a16f3724a02bcad8450e47. 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/BXC1X2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd17a58f9809cbebe3d06cb3f610d60dcdfebe62c14b64eccc3047ba79f39136. 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/BXJK02400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc506601787b313a3e4ddb16851fe0b280a967069f4958aec9f5d3945b523c4ef. 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/BK1112300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc506601787b313a3e4ddb16851fe0b280a967069f4958aec9f5d3945b523c4ef. 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/BK1112300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd440996bff0404d53374a87db9cc3d2678616b524c554abfd46903454ba859a4. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/QZMZ92492794.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc5a6dfd963d5d73fc80b0c422459a0ff432aa45132895f30cca82b1deee348. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BKM2L2400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f072afdfb379e2997c24a99a8300f19a70ffe20accf7bcaca42b50d5ad151. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BXJK02300075.