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 0x0ffed733e86359028b55e495a8d00b49bc4c6811623d8032b73bc76c30eb69f3. 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/82fd2144-bca5-432a-a33d-92d050874bc1.json and https://artists.proofprofile.net/proofs/artist/82fd2144-bca5-432a-a33d-92d050874bc1.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 0x15f89e5006aaa177e8dee7c97e949336439e28233f91d82481ad21cf804bfb3d. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USDY41698048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df0e61e430e51630d7ebec64f77e77ec931e61664907fd6764c6092ccecb57a. 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/USDY41698049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a8c48410a09cbb4bc060c79a22ef3b0b97bd7dc6bb2a96755caad1bcab1d53. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:49:29Z), 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/USDY41698053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2287d5113dd3d4222a25daae5763a452a521f727d26647e619547ab86d3c8564. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USDY41698056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72df9dd21f7befc35967cab6b4a09d9c0ed7313a775f4bcbda243253b1bc1934. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY41698057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f6692452d488a767f2964a240f87b562c0a686171dc3aa3981aae80edb2831. 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/USDY41698063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b8aa0edea47844c64e2c210b079355463f266b9e77d629f2fa9dceb7d62356. 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/USDY41698068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c11b4b0659d878eec8eccc0ae4f178f3b1ff8b4357beb748489f80dfac6cdd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USDY41698072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32f0f106aa03ea28f8f7aedbe7b5c9c2b79941d4e4895c919492d647124738. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USDY41698073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e2a1fea8931b8cd6df96233ae0464a0b7259825609c0ccfc10d543679d00c2. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:50Z), 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/USHM21636511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a7b850fd5caae0f3164100caa7fdf5af4c31b25c8b71dff13345e1c1f17d3e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM21636516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76f880403ab60da2ef25c1fea6747c698b1b354c18ed31f82368efdf12deffd. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USDY41674907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869f1d3874060a44404c711f0325fddd696b6e47cc5d22e86a80a63448529e7e. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USDY41674916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e3d9fff58c2f4abb87670620ce8175834567e0af89aa409aa152c6e2f198e4. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USDY41674918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213bbcfb04f99e3981259ea06799364811166c359a4bf2a3cf94a485b9aca75. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USDY41674919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74724abd03ab524abc04c389be9a83f25ffd09d3b4b5eee225827139eabffa3b. 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/USDY41674920.