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 0x46449f90fac25642f373b1849d57d1153a77b6bf73b57f40f445d2c0167d3046. 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/932b093f-107a-4f27-a544-580f9f0f75e9.json and https://artists.proofprofile.net/proofs/artist/932b093f-107a-4f27-a544-580f9f0f75e9.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 0xc3911ce70f13c9a70e22a29488d5689fca1e5a9aea1d5c2ef0ec5521471658db. 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/RUB732074503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8611a4f21d061daa77fc3de53f65142d915cd01989658fcd7e023db70c8be1f1. 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/RUA1D2105855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fa84dc0aa60b0e996c018ea1948c2dc57492fd04f72bd3060392bbc4c0d7bd. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/RUA1D2043334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fed5e75a3d28b62a0eeb6c35d42748b17f3c7c025f91b2823fc33a1d73177c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZGLS2248389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa188a6944cfee727876d4dcdad6456352706d417245bd89c1f666716a3a17222. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZGLS2248396.
Люблю лишь хип-хоп (prod. by FattyBeats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4fbc28b7e48d231628816a99fdb8b736ba7c9b61f27fda0028903aab054a2e. 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/RUA1D2237822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf404381e9e3e4c108ce95d9bc64f7e61c58a512dddbc6c432e18a5db578b4932. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/RUA1D2299640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa252d7c9822c8f35bd47c056e976809ebbc24e53ddee140103d92ffb15653a4. 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/RUAGT2215358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2dd108ff5e19740f516640438e88f214baacd084575fc827bc2b0d99393f28. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/RUA1D2457479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bca733a20bacf1d11e3bd0cf08f07a227d46add3cd8f33e22bb8a15de2ad05. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUA1D2499558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc80b4c89c6f16e7769e448510f1fc9ceb62298a78bb45cd4efd7d4d7d44c5a. 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/RUA1D2493884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb303865af6afcfece82f2d36dd753942adfdb9d454a28105d8276387d4e0742. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/RUB732079013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fbe4b6f33bdb916bdb6fced84a3837bc9f027f0b5e955b620eddd21c3f5255. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/RUB732074507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284fecaca6de51bdc8ff091618a54f5e9ed1fe78c34c8d95189a75e55a2c9554. 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/RUB732091690.