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 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 0x267e2ad2356e6c7c5e30389fc21b6b40777c4ecec4ce07a70c0ca2a7020673a0. 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/a0b0e5db-845a-4519-88c1-e5d5447aa632.json and https://artists.proofprofile.net/proofs/artist/a0b0e5db-845a-4519-88c1-e5d5447aa632.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 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 0x4ef06951a0ed197cf5ab0ab63f89bf8cffa52e23d177da3fe2cedcc215cceb26. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USDY41560288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0498c2caa30f326b0dce5f4bdda4f0b3facf15920f0064991e8e9b7eea8fe2. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/USDY41560289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e78432272225e3fa489b1eb584c0f6f07bec5785079511cce6a35282da9eaf. 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/USDY41560290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c695006da9bd53f278c249fd2ad7b1b600243386a2c0638e149e68358e13145. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USDY41560291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b3402954510342fbfee67bad21455822f022b4a1bc07636a2ed09d70d19869. 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/USDY41560292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0221082067f7a3771e5f9da1a3a39615fbfa649452ef3372b8201a285f89c5f9. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USDY41560293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36427a115bcfc41ea1dd4d4904087505db21df147d4b80575be8230eae829b28. 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/USDY41560294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95bb99447e0eae05f717064c06799c97240fddb129136eed1f0fd8c527f2006. 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/USDY41560295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5854ee78717b74def7bf101a69b70a51cddb2b1f0c943b13b06fbbd3011ecd. 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/USDY41560296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4487d612cebbd49b29c4f5855598c77fdcc7bfeabad15f68f99e138b05ad145. 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/USDY41560297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13869ff0d34680d18761184d10f4019a81462700e4d04469204e1005263af56. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USDY41560298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99de74bf6fcecec74c67b190b61ef30b7d9fdf6c8b60261647292c0d5f2d1b2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USDY41560300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d73a0da76db9ae1e76ee3c712900d5bce360d0ed05b296994ac3fea84cf5da. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/USHM82148398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298661b8b235e04e1b06da0c0a2692638af0d5c19c3b2176c44e5e4c02fe4cdf. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USHM82148399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a811dd7dc5b1586d3362d7c5409293f714fdd3d19db01ee945fe629a4f4da6. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/USHM82148400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622cb2d0c95e3c95a703819d2ed4ffb7ae0bb41534345ffa19711262d93f98e4. 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/USHM82148401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1afda3fae9226b7ee5800faf871724e95b3368dafbdfbbdd481b044793575af7. 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/QZK6N2138667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6a38c372f33fdd1ed333852c7d3c84d16804cb77dc982688175335d2fb6caf. 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/QZK6N2138668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6ae628c6f23272dbf9e21216519ceacc6b370c05d991c9216f21c1688be301. 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/QZK6N2138669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95cfb1a836ec75677f8109e5f74be214307d859085882385903cbb46370b6855. 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/QZK6N2138672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dc89bb5a16db16bf21f9323d2e35add627e269456a54630c2ebbe855ea3c4b. 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/QZK6N2138673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4cde28baf92d6e513847d2d6e87dfac7f925d135ec05c6e478168070466581. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/QZK6N2138674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abc640ee0f59bb452cfabf92d2bfcc34b23dd8f46fa7e4b68ca4d77c4816e02. 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/USCGJ2276083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae62d8fc804ae973f93aeb41b8dfa07f5a2942aa74d113e88aaceb36d6ca558. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM22237607.
Munir Hossn & Elas (Live at the Black Room Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5a60bb5ce302a2c5aadf009244b92aa13bda4b9e3056ebe203a6bd475e6ac7. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GXD7V2309782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe177ab2aca5cfc28c526af263832dafd3efdf26bd96f28b95529c63436089d74. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/GXD7V2305567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e729f642f56448f365da61085ead77d8b6c9a7f6b09ed34a592e87f480df58. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/GXD7V2309864.
BASSTARDOS Live at the Black Room Sessions
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cca9c93804493b6dcd0e0ebdd315d558d49e84168bf9c26237481e46f13b36c. 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/QZEZZ2300920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93eb0c1c1491737e311a54c7fb8ae5f046387893426ca60e0ca5a9fe1350cf49. 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/QZEZZ2300923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729f6a29e684af6e584f57183f814a570068ba9ffe5f005033a22c2319ee53aa. 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/QZEZZ2300922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53b03469817602a01b7b77dcfc39c04a024f89373ccae47060f2763afb3e4c3. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZEZZ2300921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a831ac103f0f8086d974ecb29f273707f42fd572c37d8b9fef43adf91692cf9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZEZZ2300925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf932791917ac5cc591245bb1a50c9128a58c7bd70d49309d6822f05387da072. 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/QZEZZ2300924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e39b897d934f8e819d51ae1574572ad03914beed9deba991fcc5d41d65dfbd9. 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/QZEZZ2300927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddafc3af05500475a1d9ddbf699dc10d31e89de709cd97e582cd5c40fee002a. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZEZZ2300926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08865fc324d1aebc7b0ef0315d6747b20e1160055ae63fa9199dc277a119175b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZEZZ2300928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd34545394850ea6cc65daf23c22bd9f9598cbe562fe28d294d48495801088. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SGW502501046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939fef419e0856325cdc1e4612075fcbc2daf29985a11f216aa16c1c183851bd. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BRWQ61500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ce8a2484a5ebaf4035f07f91ef864a31d888146bb0e0441a5632272864a0bc. 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/FR8Z21800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11003ba56c40978222f10680dfef3a2ae1d0b322192ed92b2c6a7bb07dd9a9c1. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/USA2B2316999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1342952ecb93eee05a653d46cff2dab9d627d4009e7e007f5ebb77e2836e9a0. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/QMFME2337620.