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 0x7d47a96cfa02131f979aac72b16f922f95e1c696f05665a9f96598d5e191cc02. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77dbae57-a9d8-42ce-955a-de5dec6fe39a.json and https://artists.proofprofile.net/proofs/artist/77dbae57-a9d8-42ce-955a-de5dec6fe39a.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 0xb0e5254051536b2906477fb7d48d775c205b86b5f4255ed48f8022eba8ac182b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GXD7G2598670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d93c0820d5f710dcbdd3517c5e5077422126839c602f174dacae50d80323f8. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GXD7G2542914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aeca60cc7b4be8ff133a10f215efd2cc6b5e85e733f81c6aee6a20f80b09a88. 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/GXD7G2518232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2d6ba51b5655ec8d1f56605a364edc9813ad4dca429da4162a799d644505b1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:04Z), 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/GXD7G2595708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581dceb616685b16be6a45c1ed28bf6b7cb1be67e9a31f769cd9b49c8b921a4c. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/GXD7G2519050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6569d8f60028cff315a391e8f04d5ab5dffb42a56266fbd50e633667c311f8. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GXD7G2588682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c9667f3fe0cc39a0ed8faef1136e33533d4b34d49dcb0410dba11278addf95. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXD7G2507484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6704d4038470a0a9c81eb157459e56a9a3f7c6a39b4acca63bd18af01a6641. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GXD7G2543627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e679ef2b5120c04ee8c0de0613e66632dff37fc64ad6fae6fa71a12624e284. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GXD7G2522110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49091d6ce1ed293276c706f50e1176b28d54abaaeea50f2a9b453fe948639c11. 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/GXD7G2539597.