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 0x38d69ba6aa09f51b7cb6b748ba18b9903968528d859b6b377f8b2b65120006ec. 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/12bd5403-be0d-42a5-a12f-81f981f97dd6.json and https://artists.proofprofile.net/proofs/artist/12bd5403-be0d-42a5-a12f-81f981f97dd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Why I Feel Empty Sometimes (prod. by Yai Beats)
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 0x9a5818372ba6218610b3a1af44b4198574f0642ecb6732878ceb42c2dc9730a5. 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/USCGJ2226000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26633d4f07ee3c9aadfb6fc745f309a116f59cfe268681b7550e4c8fb683e7be. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/FRX452210752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917258375fedd7de26d1df72a04d7b7615d8e33f369cb0c75be9be982a2102bd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/RUA1D2306601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b1ead373e6959d428697e4f4b0738fb023584cfd8e16632d86b6101172f0cc. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUA1D2334245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138dc67edd71eb362b35af16c38c8c945621eb5128e8f6beccc019ea8fedf031. 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/RUA1D2395255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f35b6de97b6c017a790ee8663420c5dc1ee95bee83b2385788fd1b205641e1. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/RUA1D2481015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3565906ed102d271753f5b1b97b2a2940fd94b640f6c246af81e9f9bc9c71a. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/RUAH62409341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515fe64a7d5415ced3b99eb1d7dd8c33fa0f245b52d5e359abef0e068dceff8a. 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/RUAH62409418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a1f76d4951a2c94d56c0bf6bf3809a8d6fc30aa22986075aa2ec730a530c95. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/RUAH62409183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a16929732d722f0093d3c9b300eacfe1ef63a2ac98944d7032a0c816365912a. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/RUAGT2504812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438acf23c84ed23b02317fa83e5a59ec3021a3b7ea901133472449f10dc60a0c. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/RUAH62408856.