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 0x18f72c0a0cc9326c112d034c3127d2c11398d79a2cf1fce5ee16f3279de724ec. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84bc600b-7b09-4c3b-bd8f-5a72fb9b9122.json and https://artists.proofprofile.net/proofs/artist/84bc600b-7b09-4c3b-bd8f-5a72fb9b9122.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 0xd668c991ec4bbaacc27711e4a3a991fd7b9473ee11c4a6bcb308ac054ba712b2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZLBC2428123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7b65aab6b0245bd4ee11f3a0a6d3784df1efeefe93873d8ea6ae17c0edf55e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVEM1864582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecab083abe58d5b775f77d9f6e3bc4a146a85cf7f4df4612910988875d82f0ee. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVEM1864583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e707f466083d2b483a5aaedaae5423c5850011fee9f0f485f878afc794b332. 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/QZVEM1864584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf084690ee6e9e2718a309df6be4aff8af42d5114b9fc40ca4e542dcb5768e91d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZVEM1864585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834103873755d177a37c7b5cddb49cb4fd683470869ea181772bd1731a09a309. 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/QZVEM1864586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc51fe6b6f4ef07bc55a3cfe363c7f272995f9b95ffc82cde790c24fd129084. 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/QZVEM1864587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf071e2d6da23529b79b7191ec2c822c08dccc65e1058e19973fd051a4df0ff52. 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/QZVEM1864588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6744cab7c023b768bd8e2ab5f7d63b010270d24ec424a762fadd94d4a1661b. 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/QZVEM1864589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662015e77009a0deaee5a143297282dd2cf09e789142f85faeeb430dff5af00f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZVEM1864590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe01a064151f4648af4ecca80c132aedba5f883b15dc450d56415c039b99f6f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVEM1864591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9635d5b4884119a047a9ed08cebe71e80caac75c9b4902f4cc115a11202e4588. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZVEM1864592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040b5b4971ca0317ab572c4017a669e7d98e9bda2c9d414c3790b7c56128d442. 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/QZVEM1864593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2aff62e0f12d801fa13a44cb7c43a51019c75017d538a7ad0fab99f6fea260. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVEM1866132.