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 0x21b0ac765ebcb2eba386a19813f7dfa6928f4e56887f2bc775a357f26687d116. 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/d2f76f5b-a9db-49bb-b4e5-02a3bb41a4ca.json and https://artists.proofprofile.net/proofs/artist/d2f76f5b-a9db-49bb-b4e5-02a3bb41a4ca.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 0xcb36cad6900102bef231c33c4a5faf76190560090acb9fd006e7349d621f88d8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:46Z), 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/FR10S1925961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9b768c0a446691ff154dd41223026f957b0d965d09ba2e976dab6942277922. 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/VNA112200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b8ea520bd871d9ca79df7b7baeb30dbbde267272ddfb8185887b00ab41c389. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA112200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dfc7ab84fe0a140d55ff23590794c09176c5783ec964d4a296348bcf9cf0c3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:15:08Z), 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/FRX452257480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae94cc0e1f9eac6a78f10f33639bb77dbb5bd25823546b795811572701c2f61c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:21:26Z), 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/FRX452257482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb992c2bddf4b18f63afd986f71e07bb6bc1cde698253b837d9952fd46fe6256. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FRX452257486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66421e3b41f7265444278eff1f15d3e4ae97ddcc64db4f32d0a757e88e7e6536. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX452257489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7ae0150863c539ffb7518fd2c2ca5f348aaf5b5bdc1be145be55433daea24b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:05:18Z), 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/FRX452257491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23489e0f785148f854e1c1245c1c7ceb5a19158fe10b684110e57db58e7988c. 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/FRX452257492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396a01b49063db299cb639f1859b596015972db45c552f78f04091cf993abbc0. 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/FRX872224439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120b9073ef3d51d2f26b5d83e100060bbc9a49f475c23ac4ee96774c207e6aea. 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/DGA092223832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb05e7c6f22a8b9cf34e61c3f4373b185a15015ed64777b5cae6b34598a04d0. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:38:33Z), 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/DGA092223833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde959e3ffbae3b05c60b1de3de90c8dd96dd9d75348b5ab87891efb8891eccc5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:28:49Z), 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/DGA092223835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf551f5a920859148ac2284024a17568b60a64d38212708c494330a5d132e1b88. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/DGA092223836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8e715f6ea8dc22bbea5abc6ad6a0cd8e67d48b5fc08425cc65df6b4c1447ca. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/DGA052332498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f2687df8c94ba6ff9237e429066cb8bea473ae842cafc3a0ca70b875caa2f9. 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/US39N2310882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe856c7c964605e9258650a084c9fe9604925f00fb996c263e91adc6e991129a2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:23:02Z), 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/US38Y2414718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc580a5b87e5cee3ed0cc5ab2efb520d1b7364cb7756fc42e335b4452f1e33662. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:03:31Z), 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/VNA0R2300667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa28eadb4f56313f2ef5d1d1a419bb7652ccb78959922a3b25ced8abe1dfb498. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:35:22Z), 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/VNA0R2300668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b57ea7c7163bebcdfab6fe8e63a4a6658e74f8dcb21453f080dd62d336e2be7. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:27:30Z), 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/FR59R2427850.
No Way Back (feat. TTA) [Khoa Wzzzy Rmx]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff696ab993ed5867b01bfc45564e46c8eafbb54d65d8dfca023df07f4880bb5. 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/FR96X1833767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/VNA1M2284589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0155a0d6b3648333e0a7b9bea255e26be460134894a095c7f0310e57f279cd66. 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/US38Y2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe44c9a5c010ee2f9862753cc9d6fdfa5523a1209e64d372d7fc82e2c89c0af1. 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/QZTAS2159151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4986ee9d94c3be481f9afacfb5561e7bd08d433e8f035a1c36f7307027daf8ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX452003326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92c2ce7f113ba830b82ee7438163cb17031d8838c71872b53f643f1f6016de4. 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/VNA112200063.
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