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 0x3fbcf788b6d9571b710f010a68a3442709de5d069ab16786a408e61945448326. 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/1b991cff-58a6-4108-8d4a-be68bd847bba.json and https://artists.proofprofile.net/proofs/artist/1b991cff-58a6-4108-8d4a-be68bd847bba.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 0x0eda9ed357f11ec3467543cdbdea2980c44630524b036ad427e79e9c9948e7b3. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/FR10S1786504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368a8fd6db786b64aff9d7541bebb0da8d27e5a3de1c4519059440be9a1d347f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR10S1786508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77d86edcff436282807bdd24cc6574debdd7f026272bc1a77417e81acc71a71. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR10S1786510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4a2f8f4dfb590c3a88f3bd423753db18ae561b7c0f6cce2bf94a4f7d8560b7. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/FR10S1786515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832ab37cdf9d1d6435ea2d41d1d927ab46dd0ef8e38601d2c070443e82bc115b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1786518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ade8089de7c44d2deb52208d4b38ee34a6d87c1d76d2b33ab6a120bed32ee21. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/FR10S1786525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c4f1f2fc7ea3674026469c06d7a296b7177a2489d04d9f74b48517e0333426. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR10S1786526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73801900bfba12b92b82f85d7f6e3a7dc164ae3bd00e732fd488036987835486. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1654010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19735fba336e26d49851c287f91aa6327a424e336b7f2f676b037e8170773e21. 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/FR10S1654026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1afc7afb4cdaf1ba478bc6991713a5decf9e57020ba609f018b8f8ea37beb9. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/FR10S1654029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeabdb3e868687b85de89a80996c36178b25cb189860d97860b274e8426ef0b. Chain 2 (Bitcoin): anchored in block 958678 (2026-07-19T05:59:57Z), 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/FR10S1654038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e3f3322185d182388bf431f4f39241f23045853e0a4b9d176c5a52ef0f72a. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR10S1654039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadf619d23c15bb8bfaa1df0d648b297307aa95d40a91c5634f7c59d27e630ee. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S1654040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bc2426a66f5550247aeb484c8dfe572c60847a52bef6ccdc3f914e4e736513. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR10S1654044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5089804abbd015be67921d471e814a4c9183f8d3004b61e7aeee016978909e6e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR10S1654045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1908dc9a2c2e242fe844d3a62da5e92c787e266807bb32c5782e19fa3d5039a9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:11Z), 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/FR10S1654047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b369ba65e5d6b16e039d092e6c82b4288a777f76a7d350d230ea6d2d7f3ceea. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S1654074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2750507dfea65145eb1180cf8a11f74982224e11380d068ffc71a2a97abf95e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR10S1654079.
Фристайл & Сергей Кузнецов: 50 лучших песен
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c71d1d5cd3fdca79b447f7d44381f34251dc5d877c6e24d27c368d8cd5a301. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:18:24Z), 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/FR10S1667410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bf5a23f814724f6cd9cebd4d107f2c836f62147e5648dce3bdb2854f2fc699. 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/FR10S1667418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859406b1966eb094952c8764e6850e7d7c24e9418929293dfa1561a5b67a367c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FR10S1667424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df479a6eb17ec6a1d93a8aa0e6a36da58b8ab0a90ae46335cc8b472feba21ce. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:36Z), 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/FR10S1667430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9c47d2325ab100335a3f2aec3ef7346b6d6c3e9bdf3ea27f05d02a20ed3b4a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR10S1667460.
50 Лучших Песен: Фристайл | Сергей Кузнецов
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e6d2c674d3dfed0cc93b14e6e705872f804a2976d4d783033d99d040f08ad7. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR2X41682360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49961a11547a8d9631b3fc5fe225da207854c1eac455db707bb777de1d1b95a0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR2X41682366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd020fda29feea836ff822eda4fc6f7addb1366091a4db0cd44fe6ad4d0754449. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR59R2036538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46babc1f59f25e4dd609484d9a3d54cf5b1e1efd8e98cf755d5aece03fc6d8a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR59R2036539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf656a1eb2f392085d725b12afc90319af89400d8265d94ba82ceea58483d8e58. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR10S2176708.