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 0x467a72eca5cc498b5862270ed837ae270f201c0a741928c15a5916a41da2f160. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f85a2398-199a-4d2b-9778-3bcf9e1678a7.json and https://artists.proofprofile.net/proofs/artist/f85a2398-199a-4d2b-9778-3bcf9e1678a7.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 0x35a00011567a5f13bc2a74edac825ae042199d5c461dc4bdc8606d8c287ed652. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL151800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3347f705f86a6c22712a9cffccfca3bc3b4f0fb8dbf5473678f135e5cf2b0b. 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/LVL151800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b10b55a3ba7a419fa734a34b159ebfbc5466797c7de387e0c1ee9c1d10bdfd7. 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/LVL151800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde82db66164b08fded6aeffac9199fef327eba0c4b30760b12b279f6b7ae597b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL152303037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b4aaf92436e7294af18766ad2fd38fe6e03a5809e6073d44b664457f52b354. 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/LVL152303036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccfc23a0bbd21c6035cec989a68f925cd2941c00d84b209f0c669d53a397871. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL152303034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213d778ffa7f62e796693b8af0277b18bc29303d9cc0bb372497014bd0e7fc0c. 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/LVL152303031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7789110108a2a4599028abbb2165687f514e1e287fbb73711e4cb0b6896140a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL152303030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0787249dd765f4bc7f43241e8994fac723179ef7a04e71fb8dbfd335181f6b27. 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/LVL152303029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7692b6cc92eb1d62f13c4e8ca0793170f0e21b31c4d1ef02dec7e92af5a12f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL152303027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786e6a33933a520f266259392f5fc7f538e506b5c158a5916c19328802e82264. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/LVL152303038.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fc66197c576b20883b734f05d8d437cf699ee5dbf4a0926d41f8ddd9b931d4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/LVL152303035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a2c26e18032c246bc9e799f1112418554e46038d1a63d23cce1ae8b4c242f4. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/LVL152303032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c9f29cebfb09fdd9d1e3f70979dec9b6c377a4bcae530a440946ac975c4c89. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/LVL152303028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6419076e6cd9a95b8a6e699afa48f9d47f8cf7c485e9f63ee48a829c5bbb3b4. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/LVL152303026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb7deda4cc9be48cc718b305b82cc30f4f298b8166f7a6272cffdd5af0fe8a9. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/LVL152303025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4a13d28d234a22862ce02e549651bb459414db5ac1215666d86c27648d94bb. 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/LVL152203839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207d7c3734fae4154567bb041cfb02a36d73821472ed0141632b3ef018246153. 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/LVL152200314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbf714f8dd51fd2f34b7148a838f86775ea4643c67efaf0fde6795aa76c82b4. 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/LVL151805067.
Literatūre. Ceļojums ar rakstniekiem (Soundtrack from the TV series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e453c5f1568ef64139d8f0e3394204b51c48a2c279253a2ad3b31a09475f72. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/LVL152403619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830a24c600c6bd7b8972f574d6368105a457ee7907e6a38be8aa98120d35c97c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/LVL152403612.
UPURGA (Original Soundtrack for the Film)