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 0xb5d7fa02a87333529deeb8c42914bcf9a654092c4b5dd17c46532033ee5f77fc. 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/172fb9de-97e9-4781-8ec4-5aa8df1a38cc.json and https://artists.proofprofile.net/proofs/artist/172fb9de-97e9-4781-8ec4-5aa8df1a38cc.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 0x4b05c9cc48218163159f585d9967c9b1eee8b0578898fa78b16f92f5768b374f. 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/USXXP2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a6c2aeb6ef889f2af9be9b714ca45ad9cc1afeca07418f0c16846c60f56f79. 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/USXXP2000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3915ed752765331c87f9adce7f934e30fca7748d8f48b9985cdfb32d074a393a. 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/BBA131501727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ab88e67addebfdec7e73bd02eb0a562e73dfd5e17c10c40772701a08110027. 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/BBA131501729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fcf2b000d0301f27e2827ace27335492a8bb27a75a67d0aea8a5554f154400. 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/BBA131601731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f79e10cf28b08099d2a311aa1e0adf44d53e2e13ce87e463d95fca0f36e364e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BBA131601733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0823bba256b26a9be0f5c98375e00760ad3da82e34b80a7efb12292494d1f772. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM7MR1500696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818c0c6428f9e25512ba1e3548b6ab6409f90c25e649db4472c681de58cbff94. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM7MR1501423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ea0a3f4aae32faff89c4b0b325f3c0e1ec4f8479b2d6e80577ad11396fe25e. 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/QM7MR1603787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8727854e591cedb322a17d3e280c832d52754d80f3247617da3000cb81d0e3. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCADO1871192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced94f2a413cdf75adaadddd53d7d68e1703910ee9e0080d290eee270302c896. 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/TCADO1856298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3de17346b15520a8b2f087534fff3c7e5373a9e52480fe6c9bd1a63464b8b0c. 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/TCADQ1898996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba36ddc3cb874848bfce240df21555aba0055075a1bab1ea953a9a89795c3de3. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/TCADQ1898999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ce717426e3e2d5bbefc5fbd87e402e18e32c31bbfa0ee3fe68d9d51e7f1d1b. 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/TCADQ1899002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905edd8a98a03df85339b2c71ddf4ec20f0bafb54f419fd6c7afb7b4833db9d6. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCADR1856788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c0507f2955ca5a2552fc327abc8c4674627331501fabfeec553172e859a0ff. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAEZ2040245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d10b392489ebc816643921fbf01e4b45b9921bd731fee6eca7e8a4fd0ba5459. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCADR1856790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de3b74cbb4b24348dddc2d450f81f7d6c1dbd4175d70833297cf81bf2302c09. 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/TCAEZ2064796.
Who Drinking Rum (Travis World Road Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e353c5f5280895999865cdb802b0343571fae63c6f628b6cea467730791a8b0. 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/USXXP2000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d8a962ee0dedd94c37cd603562cc9edc5dc88d4477689eaa2727842ed15f43. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/USXXP2000076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fe0fecb67f6cc0c895d72a05928c83237010b0804e73a8a49b93e64927c47c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/BBA011401642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287d0f6ee49579b8996873f586255eee6c6624d3f9cd69431e699c07ac1d2118. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USXXP2100165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf127c93123f4549af1e3bb1de9ca7924d0940cb6f63f401e3a8bd4d1d536db. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/USXXP2100166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035330af40235c679d181f0b551c05e43f385b1460a6902d7f6c541fb64abd1f. 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/USXXP2100378.
Don't Get Sick 'Rum Drinkers' (S&S Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abdd9e6f385f3471dc15b945a965ec7e7cc89d158f8dd34ecd5907e887dcea3. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/USXXP2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4245c96bd07e5ff233ce609cdc9fe82c281785deb7865b1a2ad5a1af25915470. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USXXP2200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539a87763fb6eb551b3d24829fb318d06321efd9cd5eee313e94f69367536597. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USXXP2200231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47061c32f23225777d74054bf7a332ee8e649d3f0912fd85ec82ad93eba1440. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/USXXP2200232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477d180fb1fe189c1fc42b5130f6135ed5999f17c122ee5130b9f23fcfee4352. 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/USVPR1500102.
Partyak "Party People Anthem" (feat. Jah Cure & Lil Rick)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df095631758c75d44ffdc666ace6dbebf26359d177f6c4deb413e7525fd8310. 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/USVPR1500105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102eebdcbbd1454f1868ac858adb89829b233f3f3e84335d4d6b7f5e457afe16. 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/USUYG1365340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a9887f926245b11ff636901972cc5f34fa65d4244f789e35fcc7aa6b7ab88e. 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/QMRTJ2200595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa531acf723bf66187ee5c5ffd398944c60df1b5b630d924ad3b370fd9b5c5e5c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QMRTJ2100073.