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 0xd4857f6ea7e9d2669c980cae50eee0ae3b401a265998d6f6ae70b9188f78be45. 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/1b5eb92f-d762-4976-af34-7adba2b2899d.json and https://artists.proofprofile.net/proofs/artist/1b5eb92f-d762-4976-af34-7adba2b2899d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roger Federer: Portrait of an Artist [A study and biography of one of tennis' greatest players (Unabbreviated)]
Hamilton (Original Broadway Cast Recording)
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 0x120f9c2cce2607ebd3a22254b588656594ee9ad4d4488cde47aa234a38e6fe4f. 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/USAT21502613.
Where You Are - From "Moana"/Soundtrack Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde85aafe1e6c5bf321b05d27190806832f0a624b2dca4390ca28ebb7af806ce4. 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/USWD11677854.
Vivo (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddeae43448e4302b315ec3f3d8a10b79bb26e398f5ad7eeec65aff59f365aa2. 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/USAT22103694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa422b290e16b3d5d3da122a01fd4de41bdfb5752e8b46afcc38a216849e6fe35. 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/USAT21502611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3009e2bf5bc419abcb7c6d98dfa90a1b240d534bb6bb18c7d49ab65c8aa42b. 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/USAT21502614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1535b3171f407cd6573b71eb4dbb4d3c97073f947f24932e9318f6ec6b389c3. 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/USAT21502618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41bfaca4763169546bc88d23035b47d74b37f76e03426590fa11f2f02f2bdb7. 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/USAT21502620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eeeef00564bac3a6339bdeefe99568b6da52f83bdd87ca72f6652718156cd78. 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/USAT21502625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78769082e41ca6760d17e2c7d485844fdeb2be94adadb7e6c6629e2e0bbad1a8. 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/USAT21502627.
In the Heights (Original Broadway Cast Recording)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1569db2e9a24f6ddbee5dc873716c8b22a0b910c60c969519edd8d1ec3818209. 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/USSK30896002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8abfc8e79ea6bc1639abc9b51e8d979dc64cccf66203a4653dcbe774468b76. 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/USSK30896006.
'In The Heights' Original Broadway Company
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59251e891b5e4d2f24d564d97a0a9ab71c70ecf29b402cfb05904b6624d592b. 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/USSK30896008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6920d305f6973858b8e81cf63b0a0966876f4f90bbd349db258cece5de613098. 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/USSK30896012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574fd9cb081ece9c7bd58e3a18726f0219ab5f57d8d70f448406586219081ce7. 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/USSK30896021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00043c82891a73d73ff7d8c4fb75e4510dad95b992ccca2b8c3371e700133fe5. 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/USSK30896025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf691ea924d1a3e2b299220085739056d1057e082bd2c38b13676da87bffe50c. 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/USSK30896026.
Vaiana (English Version/Original Motion Picture Soundtrack/Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x248d65d49d05cd6a5a32757cef8d16479296f93bc8f8c33db46111f1453b7341. 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/USWD11677995.