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 0x88aa65b915c3ff2057bfb8b530f6b9dbba34f54c421c3d56f0ef97f37b3c0ced. 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/13755b56-785e-411a-abff-7b6f97400404.json and https://artists.proofprofile.net/proofs/artist/13755b56-785e-411a-abff-7b6f97400404.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 0x892281f03d6ce8b62f8f1ad2b021000872968f7d7bbfaabe66b98b9f5842f3ff. 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/QZHNA2348706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65b1a04845e457408287b882b4f19976bf945d64f3183245c6cf39710434485. 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/QZHNA2348708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4adc929d2b8fa95177055227317cc3f8e6edea14f78a2763cd32a7f7ebf263f. 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/QZTAU2339636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd877167efac4b2001fcf5782f706011840ac1378454827fe12752be314ff7dc. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:09Z), 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/QZTAU2339637.
От днес имам вече нови панталонки (Доволен)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa641f4b3afd96da3c07cd0d4a098191ad65d35117201397ae98cd83b70b9ec43. 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/QZTAU2339640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc038e1ff6ebc1b72daecd53b5cb1514f624e46109791a5e2e95e549af5fb3290. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZTAU2339641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cdc4f44c5db7cae709abbd7d35cfe9fe6e018ac4faddc27a57520e2aabb077. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZTAU2339643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d6fe4150b3c76a21463ea26d1c19d91f06a12f2aa9afaec6cada624f2f8cde. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:38:38Z), 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/QZDA72479806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2499ac64ba6069e6df2a23eeea47bae7de2b223693fc837481df27fc31038f. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QZDA72479807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dde97d90daa63d9f4c5076e0314e95f069d0cd7dcad2edf765eb834c324dfa. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA72479808.
Скрила, скрила баба орехи в торбата (Хитрото мишле)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeccf9b388a1d06ad46293e42c735405773e48c106cea9708a0451c9c8b538a38. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZDA72479809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe909b85e953b7f1af20d163e0995925991834247f06f2adb8fe0e2411fae1018. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:22:31Z), 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/QZDA72479812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638990f18ba49b4d0d3ec1f0ee2dbc3a81a6a539cf7f0a25ada43308a15c3aba. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:08:35Z), 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/QZDA72479197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8cc7372f1b9d34fc1df493ab2d672346a20b6c08719a6bb94eba3316a08509. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNWW2435999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe37bf141469cb3b3529b4c2f2d0e67476a4ceb482c15c21b2bbf736fee1063dd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNWW2436000.
Чу-чу-уа (забавна детска песен за танцуване)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1190a100f13d86b42b66ff9bcdd78f394d04befd789f7c46776922366493d0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWS2554299.
През горичка, по пътечка (Среща в гората)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a4fbad750f031d6ebed54515d70839c6485695735dfa9c88e7fe9a40ef0148. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:30:58Z), 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/QZNWS2554300.