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 0x18a19a866c1b04fa89a9b0d4909573ef319126c22efaeffeaaa6fcd38cc4473a. Chain 2 (Bitcoin): anchored in block 953620 (2026-06-14T09:36:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f16f197-7c20-4fbf-b9b5-5f4be6e3502d.json and https://artists.proofprofile.net/proofs/artist/1f16f197-7c20-4fbf-b9b5-5f4be6e3502d.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 0xa59aca2d2bf84834f4b0ce53f3a8c57f036417bba060334ca0bbf29be401c219. 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/RUA0G1901106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22f1b0a4ae61faa9c422575cab9a2cd775f0903ba6134e2c1be6cdde0f1af47. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/RUA0G2000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3421e5dc0fa8c6faeb2db17e7ff8ad545635ac99880e1eb35e2136b969325d10. 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/RUA0G2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3421e5dc0fa8c6faeb2db17e7ff8ad545635ac99880e1eb35e2136b969325d10. 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/RUA0G2000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d88ca2aaa2bc5e4c24d85e84d2aca86ddc4015030d8e6d34018c8e60d9b45d. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/RUA0G2001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc9c291b2106ca84f0aab7175e60c03fc0c7396f58374f33aa851e1b7c30f04. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/RUA0G2001118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d88ca2aaa2bc5e4c24d85e84d2aca86ddc4015030d8e6d34018c8e60d9b45d. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/RUA0G2001106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc9c291b2106ca84f0aab7175e60c03fc0c7396f58374f33aa851e1b7c30f04. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RUA0G2001118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bed3acb67d8f1954fe2b7ad1d7a3583a09800e59b6e0b925b997f387951acc3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/RUA0G2100654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d3067f145bc2187118fca4e2f3fc13a7e51ac698b3ad22c6b10b07c616a90f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/RUA0G2100687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d3067f145bc2187118fca4e2f3fc13a7e51ac698b3ad22c6b10b07c616a90f. 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/RUA0G2100687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff64599b1fcaff71172387d32b625c88a2fbe4ea356905dc2d742463c902a9e. 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/RUA0G2101065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd167b18cfb73d62343e1efef1e17f201f0cd33141ed3dccf3f39d4bcd7512527. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/RUA0G2200396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756fede7b60c86fb61ac9ec69ce894f5ce6ffcece29114ead0006734cbaec0ea. 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/RUA0G2300068.
Музыка для фильма Монохром (Из "Монохром")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4465fc34688bdd723d42efb4ce2e28c294a6252f13c43c31a7611515e854eaf2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/RUA0G2400591.