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 0x7e45bb31936965e1c2426b527a1c256ca044454ab472b4c114c1bd4ff283fe2b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43744c91-60fe-44dc-9081-4d49bb245512.json and https://artists.proofprofile.net/proofs/artist/43744c91-60fe-44dc-9081-4d49bb245512.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 0x236096fe77b43d451d2bb7acf57b0b5a632243aaf8a750301de0fff541cee4fd. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/GXBDT2346661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7fd7c0cfb96e5fe04578d38ce1ce261d4dc14e9428582357ee331399b32c48. 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/GX8LE2438629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b100a078caa39a5c8d586412f5d93852a4972d980ed31ba73f6418d2d336cf6. 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/SE6I32401675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd762b951c6a91e9b8382bacc476fabb0cff93204e591d7ce2792d09ddce613eb. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6I32401349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ab98cdc78cbdec3cfb22960e48922259b5fe8523c6a5423c92b51b5cbf0509. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE6I32427191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcb3a948d45e35923c7f747f576604c45d7d53b4bfbbbe2ca0a64ac214d1b0f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/SE6QE2449010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b327f3cd1adec9a2b5bf944b8bda17b51a1e9f34cc7bad915cbfb3ca5e2c29e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE6QE2466175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd851fa2263fb9105491bc217091932a68e882b8d3acb2b48a5bc26f602fa32fd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE6SA2415133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf824f61c87802844efd6ac963931e53760ad3e5569d702598c7c499a6c307330. 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/SE6SA2415137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aefa581af5e9865ab203172daaa925e7c1ed286ef552e8690b385995fa92e1c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6SA2415138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9fbe6f9f1a88300ce06f2d6d330956d566a1e75638b9640c212f85fd02f47c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/SE6SA2415140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bc37dc2ff7dd15dc17f5f66ed0d35a7d1688db0bd38e8b627d3cea0fb2aec9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE6SA2415141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ed02ec1f735b2390120b11d1bd8de8add1d49315b4dfaba6620e828e451cd1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:43Z), 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/SE6XY2501167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7412835fe62d4afff7ab8f637a7c98c78b6ae73bf662ce5e276019ea6af53f3. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/SE6XY2503096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d4b14defd38ea8e5d1ba6a2f238e6baa615f3642d957080be847ec15ab6110. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/SE6XY2546146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef9381d13ce66b046e82474a86a30c4ab3f5e6c615a55d87d045577834276cb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE6XY2546141.