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 0x2002b67ac63f990ef99716b74637c7c7eeb7ab3ecb1815d065fa8bd66eab5635. 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/5c160a8a-68b8-4bad-96c7-bcc141abb729.json and https://artists.proofprofile.net/proofs/artist/5c160a8a-68b8-4bad-96c7-bcc141abb729.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 0xf738e5db03e59752dc6ba88372665ebb899be0908924d1b1ca84c6dd069ee073. 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/USI4R0707932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcfe238165cfab89b28710e32281eb2da07a97a7b8c9f5b06dfa8bac5486efe. 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/USI4R0901244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf225f7ab9f38fa0c8201eb49c3d2dacb8614934f3e20cb93961cc4e773a5da6. 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/USI4R0901252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20401cbce4df25c44706e98514c492283b23ba0d787102d03b1ac4f628e371ee. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USI4R1128802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85edcf17f9813417a504b6506a6d27b39e00b8573922889449f79b986b47deeb. 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/QMBZ91443404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951afcd8bdfe22e0ebfb14a14f82dd9313b469f05563d8a8481e8e1633a9113b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QM6MZ1590521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81a659dc97ea91cf87dd26498bede98d452c782c089d729c86d1e457cae5ada. 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/QM4TW1634847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d090882daa5771a196c8f920ad8f8d49326ee34f5706402ee0a7e53b9d50e64. 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/QM4TW1634849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d141a806e8dd9015763678b0ed132bc01155d21a902655bbce2a9698fbc43eb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QM4TW1634853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676b5ba3a2bd2290b7a5a0ac4fd84cfbe962612997932063678013b23a07588f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QM6N21874424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7499235da9bc46faa32d4fac76ed581111cea5878b4e9eb91f78805612020e6b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QM6N21874425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340c1a2b1faa05db0575eb69568ded1c73a0bb810f9df3e7a19d212070f61464. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QM6N21874426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a49b84adfaac53a12b7a360b276f4640471b39f0432b3ffa47a34ee7123f255. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6N21874427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df57437867e4b0bec647bd8390476e6c264a9a5cad2a2d8d424ebbeba203b89. 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/QM6N21874428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f76ee6651200938093e4b877f94aa27c0a05ecd24c3ea6618aba50be7b7ac2. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QM6N21874430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5427f8632c5ea1cde31da16908d949967d254e156ef8d0b20ce6a8d3c79174ce. 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/QM4TW1994244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc844ce9bf7626777a76632d9a5ba5c637a32ededc6f6836ce494828c84646e47. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QM6MZ2061675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3219396105040d44736309e9f007fa3ce4cdf40168dcde3f70d0583b426bdf. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/QM7282000910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507c08f84b645c1fa0a111176519d8ce7fa1ea92624eed244c1e4596d9936676. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QM4TX2149875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac488d0ea784e78d8faaa92c622d59cc6d446392b4b393d638488beff879ce6. 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/QMFMF2108545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeb936bfd1545fddba16d244f971948cee1719cf32d245dfc0a80a05579fe1c. 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/QM6N22229113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e0f4c6d4648e83340d28642534e05dd54bd8c0f30d5e879b585de5bebe2f2a. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QM4TX2449649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1595d83080cb9c2b25cdb750db55b579e25b7ae6e5b4e5edd225759df93b8807. 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/QM6MZ2446115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebf701026391fbcdd7b3068d921c872ea4276a960605aac537a6b49099c3fa0. 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/QM7282476790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f47b34edba2ca92b978892c7d6abb5a36bfc5865bb3e3783cb956f2d094ee. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QMDA62475274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ffd8f4ba427cdfee38bef53760a123c923de11ac93191ad38f64f064432cfa. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QMDA72434908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f4036f941e5de103ed60e73c24580bea25a61c7380fc2c4acb04adb0cb1f5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QM6N22518526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028573ce5d7d322100a5464dafd161e08a77733335cb064fe7cf98446b2bf0ea. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QMBZ92194144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537ecffe1016e560cb557314caa003e19a84dfaed889d1fad8a449a2fed7cc11. 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/USA2P1263758.
Stratospheric Polar Clouds - Zero Cult Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759c0613d3c79e65c14d6dc2be19450c07a024bccda8055f586d64b87b65b74c. 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/GBKQU1725737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028573ce5d7d322100a5464dafd161e08a77733335cb064fe7cf98446b2bf0ea. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/QMBZ92194144.