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 0x7a41b37b64c95942a3b42dde84f6feda4c1ed38b97b30b6ae4b2f8b5e207e7fa. 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/463bf808-6eec-4759-a3d9-42965c3b3b00.json and https://artists.proofprofile.net/proofs/artist/463bf808-6eec-4759-a3d9-42965c3b3b00.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 0x1bfbfbaf33341119e8d7214f63c4c5fda6e8d72f4ebcbad747b6e65092a46f9d. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM81513955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d22b73bb69e83683ab520e3ca67d56bfb0dde71093eb74f0095d86878088025. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:51:49Z), 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/USHM81513957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eedccd27b21885073d342a1754997d54b79407730bf5e1719d5ed9ce0dab5d. 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/USHM91744291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c39f7811d5bfbb911870007825c7cfbbedb2ea9001ce8ba011c0631c41890b6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM91744292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b461e184b1d371a8b607a56c682b17f4182f40747328ba9738a4574684726c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM91744295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144a7f3b944bf2a071f832bf60b83e5c6369e3537410280b736a093449cf4cd4. 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/USHM91744296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67dcfad4f16b5b6d6760cc1428fef7704172f7fd870bf2b958638340a32f5d8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM91744297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c7e11d95f7abaa722faced90f44c4667cfe04ada4eb2404a98ab288061fee9. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USHM91744299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf6ffe060edd55f812908e5ae6feb58c0ce3f22bc8adc617a3d3b36a54286cb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USCGJ1946877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fdd975371804e6bddbe986aceb6982911bdc993852fe60a2b77b1a2064e5bf. 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/USCGJ1946881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444f1d9440e9908033121e55722de587e3b0caed6ef9cb2e18dfd1b3857f640f. 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/USHM21939788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ddbf639ac592634f9ff065882ca965d8cb8fdc572f97886dd146c1975227fb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USCGH2025232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bf3ec2ec75d55945772621f3d55b67afdf521cc36fb8b815164a7fe5873038. 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/USCGH2025233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a04501858536f2cb3b4440cf9726ade698b8b331131b51061cc998472f2aae. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH2025234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e704c2cf9110e68fc6087a65283840c53502c8ad96ddcb5fed1111d47cfb99. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR26V2066095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c380d95ffd01a95d4ad9762a68ac34faa230110b104f95b1b23c19252d557b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/FR2X42147624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef66b8dfbecfe62ea8231e4e8d119698733884b043d0734b7c5b0f1e456fc44c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR96X2188805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da1a175860dd6ef2f0d4b006ac42f90a556b16b17ce6cfb4022577474802b49. 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/FR59R2109534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87742d40f9ab86551421ddb6b35704727e30f7024cb6e392a712a12e5fe7d37c. 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/FRX762246676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fa6fbebf8002544dc2f00d2753cbb70fe0449501869c78fa80c271981d1ef2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZRP42283761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e618e868518078bb5846505eb01493ad7d91cd918861c02555d8b8cc94bc72. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZWFF2389724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55a7dae8f924a0414bb855b7c05d732719660cb613d9556963dada04d4313c9. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZDA82420968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf885d50dafd392b04fbb833aeddb56ba7672ca637a711e1e5c06ff1cc9da92c. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZHN82454962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52849034a431b18d7bcf1bf96c36a0c6816b32b72690d156fbec5c0bab5c429f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:36Z), 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/QZK6J2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4231ff26822ecca56a243649a830da84bf75cdb8ab199a1c66a74ff2f9d78db. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPLS2462730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a1cb0e98ed03e6b204ceee9c61a554459ab595bb5dcf78784de23389a1b5be. 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/QZTBA2458109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf28507a3d8e12e0ed76bbaf13a1e48b449ef727a3c923761022df32737b9213. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3F32417829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4206ec90e42bba823a88d0ab8f1a98db34ab226819fff1df9fb465c6581b236. 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/QT3F32417830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a4d839602d5120cc9cfcc6a14f93e7073c183c59228e6955f52aa7af294a4e. 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/QT3F32417831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3ffdf502f47351b72545432b53727b0a5f347ffa045ea598a211398a5a5577. 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/QT3F32417832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e212731c492a6d3a70c300479ac58b8ac3320b57865e34876aba77c893be94. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/USJ3V2424021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b86efd9b12eb1cf1636c7c309f73b535467dee77cba2374fb838d2a40b11f5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USJ3V2424022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf25039054a5e709cec92bde6f54c86f28a4be411dd137a1a7f534f6f1a258f8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZWFR2539460.
Duele Delux (feat. Impostores De Nuevo Leon & Los Mas Romanticos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2dca24f5577489c29666531e75371d46d4de4c8622b017382b981919018f8c. 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/TCACZ1729751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ea92650ed2dda5e12f3a7f76bf0f282a059bbb537eaf3dd1c283e8fe32143. 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/QZNJY2360886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9a315475c0f52eaa3cc23c53dc7f08f54aa5449aa330e98b8484ccf6743e77. 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/MXH152300424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4429a64cc870f13e49a528407ad5d4c5425d4be3524083626c7ea3a183fb6616. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZNJV2399532.
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