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 0x9ee27d9e6548c19edd793a922588479ee65e95cd16b000894961c86346f65024. 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/f79d7ec5-b45a-42cb-a26d-389a584d648a.json and https://artists.proofprofile.net/proofs/artist/f79d7ec5-b45a-42cb-a26d-389a584d648a.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 0x4a18b1720ce63c3541614d2084b877942369418045281dd517495ea04216addf. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM24S1703951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bc703cf46f02284eab991b75627af28693fc637369c26542b8a5145b4dfa78. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM24S1703953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db812e8f9477426b9a109fc8f1b62fad6dfd805726918c5e44a7d844b02da8e. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QM24S1703954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a80d4332d8a2e94e3bc351e329388dd163eb571df98dfa51b4f38494a1db20. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QM24S1703955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060055e918faab46ec693a85442b286408fc565edb35b233fd80adefdc5212a7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZK6L2084854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f09588e79404bf89fba3cd57ec67f65d1d193146e9ebc93069113db803ed4f8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZK6L2084855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2acd401647e38317a46eac0d28a1f5d0f6c56376562ccc574976bb6c2f3308. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZK6L2084857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc002e5bcaa8c9cd1b546e8858a113d4c685d398a7f51d0faca31a29e23021c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZTAX2331804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7b51b4b0519e6b662b1c0496020047558e59d437008c9437d44485fc36acb0. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZTAY2307076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89b880ea9c52f823d36b2bb03026aa764b95732a3705aa87b6bee7948b7c23b. 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/QZTAX2331784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768fac7a0b0da693114cb43a153573306da82d848ab2914f3d76d28284196a47. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZTAX2331785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb973c40b9f167c5b50cfc3e72802e3d2e0d790354d9320f5574205b0c5cf3217. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZTAX2331786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe094f872544a7e66b42b311ce3c3fb7fde1e388b1e0a63467a2d6c376d9315c2. 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/QZTAY2307077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35645a8087942fa66b86b657be9205e53cff178d007ce3a096f85fc0dd780bd. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZTAY2307078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907c2dd7a9d0c73f304a7464b6bfcfb056aa66abc1148115d5430eda4596825d. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZTAY2307079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb260f119532c4b95b24362b746dbe7eb77b51b675cd61cfedf7921207b36cfd4. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/QZTAY2307080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789b9aadf463cb4881eb43c1e3f3b1cbba4eba21063ed0b9d08b9d5e3a2f7ab5. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/QZWFH2513413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff3fabc40e4ba48f268fe7803a4ddb0007df6b1446c031f3dadda55d8b66e46. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWFH2513453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa267ea587e402ac7ee6d925af822eab079b1f0e5b2886badf894b3a7e877ea55. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZWFH2513455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabe21a2fd789806c20cf855b6385c27bbadfd9505877bbf550c1251f3abfe54. 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/GBKPL2214324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ecb0c3360079a786438e0fb7d24003c94d2ce2a792db8729fd9f00e5150be. 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/NL8RL2508322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6220df1c3bc3dafd664437ee68f2bf5f1f4d7e89feca8d78959e199bf176204c. 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/AUMGB2000332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e696b4cf2ecb8719bb8268191ae05e3fe3254ec6edf6eb1a33363e48294afe. 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/UKJLR2200357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb0a38b2c6fd3fc9ec74f56807f3280232b0758a0a4f4d38bcf5dd75e7fb046. 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/CAHQJ1965491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271337885fe219f6a9812f0ace061293b02335df4dddff0802840933dd0e0076. 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/QZS7J2382223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4abf040f61a895ffd48fe2759f96dabfb5f5a9d6e647819d6c580afd2c0f6f6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRIDO2212375.
Forget Me Not (feat. Amber Navran & Phylicia Rashad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c28777a6efeeab4e443851462734d1288d086c830c3d7a8986fffeec8a49b. 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/QMJMT2405301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1a5ef8a3e538ee18788f918e2445c7545087bb4e4a4d9b6db850cc164c7293. 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/QMGR32144599.
Brighter Daze (feat. Will Jordan & Amber Navran)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e67de4db64560a4d0d5b7a30b5d75e6f23a66dc1a4e403c4839f3e4d0801ad. 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/USUYG1323486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc013940858427d8ad049232bb8f5d534dc7cb774305e4ed207f43d105357907. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/QZTBA2241545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe054d925f4fb44ceed4b636fa87c590037a8e1c33e3cb7dc2a99934340f67526. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUM71803979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851c28777a6efeeab4e443851462734d1288d086c830c3d7a8986fffeec8a49b. 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/QMJMT2405301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb78ed0271953412b60345cde6b35d3f8eea6c0a66e504c4061066ae65a1c0f. 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/QZS4T2300044.
Workin' (feat. Amber Navran & King Draft)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224f9aff51d48ea8e0dc0a3346d8c7c8b2ed5c0e6657964934dc70bc32c3340f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USUYG1471424.