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 0xe0bb713aa9f8a51465d52faa71018931fa53b19b300f2859838704186cfc9a11. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d77194a8-2847-4052-9d7e-083914102e0f.json and https://artists.proofprofile.net/proofs/artist/d77194a8-2847-4052-9d7e-083914102e0f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Richard Strauss: An Alpine Symphony, Op. 64
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 0x208dd36edc8d751c5735b54221fcfe9c5198d1c9c63c15d6ce46fb08b98e93c5. 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/PLA161851101.
A Game of Croquet (From "The Theory of Everything")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402fcc695691926e9b5339c75579c09ff354792d17b21158e6e6ec903ace8276. 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/PLA161851102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944719cc65fedc2384b213e1803d8a2a55eda87385da8f09a3de2f908a70e1eb. 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/PLA161851103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e15f8616984d124540ce277eba3ff31cbcf304d916f8dbc3e9f91f024cee00. 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/PLA161851104.
River Flows in You (Featured in "Twilight")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3dddf186dc3169453f1e0ed132d555f49d982c64971f823cb2b4f905c9ecf6. 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/PLA161851105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e645ddbfc660ae1ceb47a3a959b53e292a858414ebcdaacef262b830e23d2f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PLA161851107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239f26659339fd71bec6999b8864246632102bb6af8dbfc7136a643d4f46beb7. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/PLA161851108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48510ac0fe3a307fa48ec1d470e2a74fa20b9044e04eed6f5e0fad7bf888b96c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLA161851109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddffeb35da6f47eff8ae3278e5e3e4138e9b237cca1bf80bcbad59f280d4ebd2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T00:51:59Z), 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/PLA161851110.
Rodzina Połanieckich (From "Bilans kwartalny")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5d7dd9ceb94ba483442e5c4878f75f71bcb49c413b356bf7b6b65045ce39b6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLA161851112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c69ddf2c02a611ebe86bac50c449c9f2d4d0243c2690bb2a9d7d203b5f94c1. 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/PLA161851117.
Laura Palmer's Theme (From "Twin Peaks")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d419688013ba5c931bc9dca1559d2dec956ff7ffb03b7600a2c5163dbd647af. 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/PLA161851118.
On the Nature of Daylight (From "Arrival")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be5a27ac5c00ab11c92d967e9814381b59fc40fbd4a8d3135711ca2c425c705. 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/PLA161851119.
Rinaldo, HWV 7: Lascia ch'io pianga (Featured in "Farinelli")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9e0690e958055843bd6aaa9606e8b07358ced7d34297efba7a23f3e0c5a28c. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/PLA161851106.
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
Main Theme (From "Schindler's List") / Suite española No. 1, Op. 47: No. 5, Asturias
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bb8ff61182920c6fac50c249afeb7936b65719c18d59e7b76e8638f97bcdfdc. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/PLA161851111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267a9528986c63656d04b48e4a0253a351cc8cba71ab494d042cc1bbe6261f1c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/PLA161851113.
Tell Me a Story, Katharine (From "Shine")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5273f9238c2e1740de3190c61ced85d0cb5a6b765e321b39b82d87862df7308. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/PLA161851114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e54baa6c430f016f282ba3da29757367cd8d2a5b6f1e9afe5957d2c2afd36d2. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/PLA161851115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a65393cf5a87f5361b1356510889d570bbc137f29cc46af04b9b4f4e60cc464. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/PLA161851116.
Sleep Safe and Warm (From "Rosemary's Baby")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21f307afd083bfc7f3ae1e04619c1f8866dd713a6ff2e535f9516249661d006. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/PLA161851120.