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 0x35d5c3df7815a091080e6bb0b8c3378e7c71cdecc009c3cb4b2ed64792b254a6. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a56fd43c-aa45-4d5f-8232-7d1e1de1635c.json and https://artists.proofprofile.net/proofs/artist/a56fd43c-aa45-4d5f-8232-7d1e1de1635c.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 0x1f98977dc7d82b963f7ca3f7ddcb00e6da918ddbe37ac67f5007cd859578b873. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P1810669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d44696079a1a17b4f0d3cba2098bccdb76f2f2e7055ac9da468f3c433fccaaf. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USA2P1810665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8568d8690f8c011d8dcd5eb2f8fbcc7fd3efea04a629da6b91a339a504ab7629. 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/BEY921308606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e2d338a3eb3cd85b3e2fcf6eccc89c6b1e8d2bfe5021f1dbdcaa3f06e32509. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/BEY921308603.
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 0x9d0fbfac829aa1f8fdfcefc294856ac6f5c1ffe6842c3577ac3f5be7697e5a4d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P1217717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2d31b596c905094d890301fd10fd0ea3df2c5f810a16c325c9e1170e531397. 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/USA2P1217718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ec38989b444d0c40ec02d84a1a9bca67eab825cd1dedfa93564273967ac86e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P1217719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd55b6257c3e179aeb5ca515100647a793a41fa0b087748a59cf8069236514e. 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/USA2P1217724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aaa2df357a0e3ea12c6a53e6107135a94b25b7bd80d04f91dcd4c6bfec7a4c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USA2P1217716.
Diamond Sky - Indra, Genetic Syndrome Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66077cdeae505c0596e6447de05a3d77dcfa505e343b8900c75a415917ef83e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USA2P1217720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc060b818351f17d973122ed1a9f32e9dc6d41e7b2f73da93d832c45ac396980. 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/USA2P1217721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407363cc4440be653b7f028f2a6b53ce9bf93937f5bbc124721faa0be87e5fd0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA2P1217722.
Imagination - Ultravoice, Tactic Mind Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aadf28e52c2e4fac14434d48a5ab853e3d0c5ea374537711f297ef7bd61fdb7. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/USA2P1217723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b8bc91185fd663e6628920b4b85097bc5cfb350167101a480a5ad73467ce14. 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/IL4061000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d9c58584870da83a8054cf6efd70ff20ee29425abea98877bd7fae04181900. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL4061000118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125b53a9970c2fdc7e1807f20439d86a318f61d4a59bf0abf574f8b59ec7632d. 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/IL4061000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe275619860fec6bf20442c1bfa2da8a0bc2d874e3838733e779698a0b6e91c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/IL4061000122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2248e841d26fe205be2a71e874e167e8de8f4f8f532cb3c742dbe5a5694f39c6. 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/IL4061000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb98b2d836834e7168929ae64a5ba292b7279c3a8df30b33467942bf253f98c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:48:54Z), 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/IL4061000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2714c85ff620c926c343b9b9381f270d7a983e11567c35474a6e5ac88dfd78fb. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/IL4061000124.
Electronic Playground - Sesto Sento Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481191d872bc99e8c13c7a686c497d492eaed00787186c61b9a45239b37b56ce. 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/IL4060800102.
Nasty - Bizzare Contact Vs. Electro Sun Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb453225eeace1ea73574c1088c1d4c5c70782cd48034a78f4a8695bf6dd07b29. 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/IL4060800104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47406ddcc8872364675a46ada65b3059b4fc1273ffe21fdfb0eacb70c27d610. 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/IL4060800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5274cecbc762c61f973fea70707832bf85af0574bfd1e436891840703777c436. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/IL4060800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161729765401c7d23ad21cb923d6e53f67fa6f8d98f9442ce9c890fd62b8e4b8. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/IL4060800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd96937e0645e8569fcb784944da9afe4d3f3468f7725d4ff9d845dba8a5a5b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/IL4060800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e22c5a540aba7889c6d8b8155ebffe9fbb9b930ec400f1248b35d255fec08f. 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/USA2P1287844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffcac36c0ba2f3146646b9e3811007cdef074de018aebed482eaba319bf2f71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IL4061100116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b81fee2183d76d548b261083569787a12bd123cac546658c74b9d1d90530b2. 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/IL4061100118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bed4f8843b0ab6c854fc2bd19ac7e9437a45288bd59fe2dbfc14b7ad127879. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/IL4061100117.