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 0x1c9f9792fad6fec3fddc8e0da2ea79d7dadba02494c31259df497262adcfd5cd. 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/fe95a8e0-ba08-4993-b009-64eca785ea00.json and https://artists.proofprofile.net/proofs/artist/fe95a8e0-ba08-4993-b009-64eca785ea00.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 0xc68ecd1c3ff0f2d67560e893d234fdddb97801bbf8177505d6ef80791815e07d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:36Z), 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/FR10S1698902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3414582f0295050df09b26f0450784beb94ef8b6b2fdb7fe6edcfd926b52e5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR10S1698904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434c2add9093cc36079dd2ed250a8668dcc9a737dceb4d45d53841470736093. 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/FR10S1698939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf055f39b5279d09b903361ddf92a735d9195fcd64598b62111af5c5b2f55b3c4. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:00:53Z), 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/FR10S1698941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d0a243556c491ad048bca44059ea96c2feadbced3368054aa0dd37dded1c45. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/FR10S1698942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f6ae8b36edd01fcf24a52067c5c159d41f3723e360f64558fbd59e490993d1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:15:51Z), 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/FR10S1698943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd6bdf1512dcc8dc0062de90495ea3e67db808c9f19f028ea31c205536a4c0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RUB861900254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb635d8a07046039ce109c615a770852e6db7311654025a96116b4aec52edd5. 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/RUB861900257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f189a73f59526a4d88438e7a3f2fb70349fd692d9cb08ba021d6a31916a315. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:26Z), 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/RUB861900260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1806926d000d59f3a87c46399cc46117e74d7c969dcb671742dd748b8e3e52. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/RUB861900265.
Путь слабака, или Книга лишнего человека
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5d52ed015ddc69c46c3565e0e92fdfb7b25547a3b8c153af28a1ef45ab195f. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:45:36Z), 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/RUB861700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180d8582499b856ce6619b218afee7bed09a0e1018db75a9882503873e674f9f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/RUB862100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc052e9639830d9c717087448a29a0a23661d29aa5163962b404319f22c92d. 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/RUB862100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bb166235fa2a71821b1f3210ed2eb633b39c38f61315a2bf912db948c020fc. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/RUA1D2511057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4474ead3e6b96730822199802e01bd0b4f3796bfc87a265ef718d6e3dbe885. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/RUA1D2511064.