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 0x0bd0df1670f3bb0f6e0363c9041fd1ee70f919bfefcfeb2dfa2e24d0c3d3cb36. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb63fec5-04fd-4d6d-9705-3f5ebfc365ce.json and https://artists.proofprofile.net/proofs/artist/eb63fec5-04fd-4d6d-9705-3f5ebfc365ce.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 0x970c58f0e19e5e2c2f8e76da5244ff51fa4a91fb80a721febc3e7ac0b35ffa23. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUAGV2305625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea9c3d6ab10de4b205fecdb79aebf9216d41246a8c1f8836c6d15c8822c0b8a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/RUAGV2305627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d8c95525f9b1990c4a775305b71c0fac8729f5c0489f6a73e398c2fdc4d3c4. 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/RUAGV2405037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6349b7408836930fbbed96dbcd29484dbf8647ea1db55bd47db83b3084d178f3. 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/RUAGV2407185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e1f44493b6d7c3b9fa7a3a65e63c245deee591ebd90c9e7f4b2adae0f36105. 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/RUAGV2408719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda9692c50b98a256c2b26f1af0f155cd8a527307e19a332d4effdaa9e2d2d3a. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/RUAGV2408720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e93c91f769b0237ec9eda8e21a029e7a8193096214db502e07717cbd297bbab. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/RUAGV2501505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16f37a69664f5b50e2510cfae2fd80af17ea769cb1fd0c02c3edac40021d78d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUAGV2502017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c69b4c4b1271bb2c4702b62c98c9a9d2087de14aeea0c72eb0076ab45fbf2c. 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/RUAGV2502018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19936ccd559f20b4b2845c366b2e21e54d84496892eb11b970fff645e3658582. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/RUAGV2502019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3548dde04dfacea1626db8ad2ae07e482a067207fb5ff1ed5af4638154b5562. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/RUAGV2502020.
Что вообще делает диджей? (Музыка со вкусом. 1968)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc677376b160fe5d2899c0ec39c5a14e49b951223a3046dfa39a60c54b7a33b14. 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/RUAGV2508782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6de61af880f7bea94a0f9e3dd94214127c6c82ec15154a973eaf78dc9e9e10. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/RUAGV2508783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7390fe08757ba842911f2b199bd10dcb20fdc1dee1f38eb1cd6d89ca4fffe839. 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/RUAGV2508784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee1785a1d8e8ebc3ebb805b60e5e4603d3d4ee798defbf393f267f29e258a6a. 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/RUAGV2514152.