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 0x9266a38d7cc3f9f65ff87a94b31d3e0511f0bf1d519d7216a0a3aee613ed0ae7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90f89c36-598b-43f3-81c7-d076c160bfa4.json and https://artists.proofprofile.net/proofs/artist/90f89c36-598b-43f3-81c7-d076c160bfa4.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 0x2eb8950eb97e6a23a68e2c975eccd5580824dc9d73dd6de8f80d6aa067548ce8. 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/PLF242108176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f6092744c0a06de0ead8cd2168794baf6c0f0018221861c581b54ac30a8a87. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PLF242108177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12224113a28cdf3a392c776857c3afe7a4a43c6de399acb7d0349e80bcb1c2f. 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/PLF242107766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac13c34be40ce2f6052bf73bd5cde34e51aa84aa71beac802b866deadd31cb25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLF242209850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69067be973a4e7bbf6d0d7f1f42ea9b020b04a9b8234724b02e3fc4258c8e373. 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/PLF242209851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9026c589819af75d258463fc6b90ea9c2998b64f3eb705989a8cbad12e5d2b. 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/PLF242209852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1247bd18b50203e2e3931d93252470f0beaf9893e4cf800c3b0b883757075621. 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/PLF242209729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca1ad1b6bb39ed87746183ffaf6825d4e30f0b61b37fd1fa0819aaccf095cb2. 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/PLF242209853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca433f8ee51a200b2f8fa86f952691842ff7fd28de7aba7b4114e6404f9dda9a. 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/PLF242209802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeba0bdd863ccdb0efd6a380d131d8df2c2ebc78d9fd4941ee909ef6b06db77a. 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/PLF242209854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a8a1de16f30ac31518664fbdc17db0d2fbfdc324fc3b1ab9dbc3b413748cb. 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/PLF242209855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee0a682e18bf1a967cb4463bc91a49630e82df817bba18f64bab39620068e27. 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/PLF242209856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedf18ae856c463056e5b83644b5ae19d8f8dfc1a8898186db331f5041b7c464. 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/PLF242209857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb2e6f5dc6ce5e02390280ebbb12c41fb645b521c75f10d0a4b4e4333d1c6c1. 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/PLF242209858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6eb4cf3536c5c0598c3be3d532c304e06215424b6ea200f707178d8daae2ca. 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/PLF242209848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf85313e0dd849e8f4815e58d1e6e10083485e8973d66bb2b89c5c711f4d330. 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/PLF242209772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e21785cfa3745b44a197af67d948a7af845124ffdeddcb5af7b293ed42d2ec0. 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/PLF242209811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6eb4cf3536c5c0598c3be3d532c304e06215424b6ea200f707178d8daae2ca. 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/PLF242209848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c49e59bf699dcb6b1a617ba799383c997d812b280fba45d64227dd26b0c707a. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:30:10Z), 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/PLF242210286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b811216b1260e964514160b1aed7168f5636b26ff567c4a18e01ba82a5df9b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLF242210416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7807a5f397eccf85fe61f000f18a180bfb565dc57a264e10df74da49dad9d14. 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/PLF242211183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee4d7fd6da628d3e0abdb5729e654ece03d7090f63945e27adbe9566b4be1f1. 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/PLF242211218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5004904b1b80fa69263948ba7a38a57800c776d93d852f2654df934f9010bcc4. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:01Z), 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/PLF242211219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5591e024d23bd627489ba9d7cf6f141b1b98724573184984529defd7a8efb487. 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/PLF242211220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b89c3f810b6ee25149b673675daf6f7651133af931c654897a4a3673e92f556. 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/PLF242211221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004c06784a1b23446f3d8aed2aba818bcc450cb48fb18d28ef8115695ebad7b6. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:08:04Z), 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/PLF242211167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14eebf30f05e917086966641295f366b7120d98017a96df03eb02175afce9384. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLF242211222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d15ec2d316dbdb4f68fc036fd960388622393053d00fe4b270314b0c3916f99. 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/PLF242209272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302e82e97015c43c0f6d0771c643f3f0b18704c2a9546ce1dadd3019812ef50e. 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/PLB382400445.