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 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 0xa2b074a47c21b75cd3a7095a3478137484e957d9678636de6aaa2f87f49bcf22. 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/aafd8794-f707-498a-a21d-e70b7438841b.json and https://artists.proofprofile.net/proofs/artist/aafd8794-f707-498a-a21d-e70b7438841b.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 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 0x93696dff16dcba0795c54b40a81b653999fe763ad2c270f0b6037ed04399f5ca. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FR96X1507402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f385e37740467c9f7e68f250c12a7b742e5f6f8cc2d77516d0bbf94bab37499. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RUB731300997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5523469384d2e184b48bc45c75bffa488f750e31156b0cedcac780ea59b7d293. 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/RUB731301002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dde6b8a256c2e87d48b56efb0fcc2ac0be91c18bd1a31f663b73222bdb8938f. 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/RUB731300735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbed7425f8e67343b0b9ebfc389b7a85f75a860667dd731d6f9455c9e0d361a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/RUB731300739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f827057dfaccb33fe65add364a5e7bdd920a81041090a2c487131317d9a1fad. 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/RUB731300740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8adc57e151b8e7ff492b7d4e2ede51c845a9fe6e70369e799f9ca4bac59d39. 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/RUB731300742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94bfe8d6296f7f3c791473d92a5b8ea3c1b7d4f01921f599436dc4dacc87193. 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/RUB731300743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144215a21526c922c4ace56602ef16e4e050ace02d5b5a008727cefd19bd15e7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUB731300748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f785ff9e996858d62c0f7de868dc613daf0e96bbd5b8fb790d20f7ec2825b8d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/RUB731300744.
Всё, Кончено Всё - Drums & Bass Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea02adafed339d6606fa0d9b4ecfbb65fdf2e95b7350aca4899fb092c6d38ff. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/RUB731300750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba216ffb68dca9264286f38827797b206d395afcdfbce7f8b39aead94f0d8a13. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/RUB731300756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d9701286fddf2991ec0cd70e90f9bbb04e102011163b7ad73d97e6e70d7de3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/RUB731300753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d9b7a7e046d4ee0c21366432d7780fa8b8d9d46bb42ae85dac7e14b2828873. 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/RUB731300758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c693626924e1ca35592f6625ddab3e34f231fed0eb7fb47b93c9368a650245. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/RUB731300759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d9c6aa8e6a54b5fccb2321dc27394317b504cb2ad900a0cd571dc0711bb8f7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/RUB731300761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c8374e3897f60c0c644e857d135d3655402cb98f9d15d82c2e6aa3c3a11711. 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/RUB731300764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ca46953e58c733b37ffbd6c8d1389121bf108c1cc9d95a6d404ac1d3b99180. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/RUB731300765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ea498911b511b92814140b6d6c4d3705e5c30380557550121e51d4f38aa594. 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/RUB731300994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef93e6d6fc4b98c77ee5b07070f61f29b3f8888318ee2f431d529ef169f2a05. 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/RUB731300998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8759fcd3349925141d7dc9028e8327c2a50cf03672d7853b99b75646f2595d6c. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/RUB731300747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x739f4dfb658489e1753613ce77b5421a85b8fa835cf1e17c238b46fbd1c704a0. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/RUB731300733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc24e3d383963742a64488ac5c560342e9e8c8fcefa6bfd9fc2be690ff04180. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/RUB731300745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb3ecdaa03443dcba4534c0227c1702ba21153db314f592a18e0d63a69e6755. 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/RUB731301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff95196bfc53d7a7704e1cdcd802b2ec35d1e1e078b43f63c859bf13c23f393. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/RUB731300746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e6534bb44bf036fe817459c8b81b70a43019ea55d0cc63f137a171bc666745. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/RUB731301006.
Grand Collection: Комиссар (Лучшее для лучших)