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 0x2cf304176ae3a9eb2f644b4c1e649eab480de149a916264140bd0ada39677a53. 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/adc758df-7131-4401-8018-e8b54cad8cab.json and https://artists.proofprofile.net/proofs/artist/adc758df-7131-4401-8018-e8b54cad8cab.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Their First Time (From "Handmaid's Tale")
Reminiscence (Theme by Johannes Bornlöf)
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 0x472f5420e77852fd56a4199bed398a50ee0e8eb7e7d18b253a7ea220a61f754f. 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/SEWDL6142774.
Downton Abbey Suite (From "Downton Abbey")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fb89f2e7889bda38c480482e3fae2bc183763784d5eddbff05c86bcd50b7f5. 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/SEWDL6142767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725e62ae324281e6d0167a493c097493654166092bf3217364d31a0e859a5cc. 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/SEWDL6142789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe54e4aff4d8875f273bff3e0c6486267261d81753b26d0b6ba0081dce8025a85. 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/SEWDL6142773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbeea0dda04a0189bf27a2d784cad141de61dc811751e96d0a3d38d66adeec06. 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/SEWDL6142776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af62c991ef8fc294a68bd29fd47f90fc4352495eb0b3de85a1bd974bee73e3f. 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/SEWDL6144549.
Klaviermusik 50 Meisterwerke – Klassik die man hören muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342e9e571b518e494ce8e439c00e0c06827469c11d1a79c3bb9ef5e1cfe0baa7. 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/SEWDL6142799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bec59a0aba1e94a3fee7ffa542da8639c756438d0139a2e540caca571167879. 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/SEWDL6142766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e9478e986da075400f7acd75194e482c1210228e5e8bf2ddcf435e0c16699. 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/SEWDL6142764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18945200f7eb35536d7b738b4bf6fac89e352f8d74a5cbf4d738bb08fc1d75ea. 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/SEWDL6142805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a99db045f8a31b59dc4a8fdfcdba3a8b8f256967a4e093e4b380e1106978c6. 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/SEWDL6142801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1711a7eb0e276065e9d4d16fb0ea3ca690c0b1d7fed56a9a780d4e37f1384185. 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/SEWDL6142803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a953462e9703821ade31fe768c6c3516c6a269da262b23a87be8fdb4fd3908. 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/SEWDL6142771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f7ffbce2668e17005d485fc0a90ce9fd3a37560697ca1d4c0e9d60fb2b5a34. 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/SEWDL6142777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725e62ae324281e6d0167a493c097493654166092bf3217364d31a0e859a5cc. 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/SEWDL6142789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725e62ae324281e6d0167a493c097493654166092bf3217364d31a0e859a5cc. 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/SEWDL6142789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5725e62ae324281e6d0167a493c097493654166092bf3217364d31a0e859a5cc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SEWDL6142789.