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 0xe1c025088f7efa377a9ff1363e224bb83eca01226ae1264c2828b618378b74ed. 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/4c0a5a86-4eae-4586-9737-865e190e33aa.json and https://artists.proofprofile.net/proofs/artist/4c0a5a86-4eae-4586-9737-865e190e33aa.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 0xf0cbf6df35b57076a7ab041a3cafa994b12f2e372ac34f7746e3041a5891f4ce. 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/DE1JT1162436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4bb40041e0391c9cbb5ba99e590ed93718fbc576a8f3f1f73244e055ac4fa9. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DE1JT1162439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55678d45b455bb992c6fbdc204f879c4d3e7bdcf13bf676d2cc860380d30afa. 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/DE1JT1162438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e726fbc59aab36fc7a012a2689ff541ab55e47491fdce62e0dad96595065fd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DE1JT1162437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff381ea3f798fcc63e27d24eb5113ef44b1f414b09bd42f90f61e5c4d77f4d5b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DE1JT1162448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba5c61501347d22e07283373bfc43c73605cb094515989da0a1f382fa1f892b0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DE1JT1162450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b1f441df73ba5f558ada3a1b0ed0e8abbb6b96a70a6e2e80ece0e9a54103d8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DE1JT1162464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab943c87284171653c0f61654e112e217ea89bd47b9af92cc4e753efa43c8ef. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DE1JT1162440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565eff70fd1e5e47763a6032a94b8a4d71b633ebf929e71bfd36e486d2c993f7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:07:49Z), 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/DE1JT1162441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbd6f4c67a7897d58c9d3cfb9f9c42aa7555c19a5a7572784a20a90edce1a8e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DE1JT1162446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d617c9f3036f0684240049cc89b4166d9182bd8f5206c32307a9e73339e7f1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/DE1JT1162443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc752a5a6514f591fffcd6c42f603aac7c2da86747ee897a275693b24e3731c53. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:28Z), 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/DE1JT1162445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425fe4e400c0b628fd8f2479981cf7cb9882339cb045d2c49225a7a1d154270c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:27:00Z), 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/DE1JT1162444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1f32338052213c3297d5e1d9c902263721e7eedd0a86c9dd737040f6ff5d64. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DE1JT1162453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cf17819a66e552eae3f32c2ab3c068a6ba3613f5c3abfa9305e59c13055fb7. 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/DE1JT1162447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f94ec4d987deffc087172f0745cedb40413fe0d3801414f0ab6fbbc6f34b611. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DE1JT1162442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47599ef86290a040b34f5523642947dfebf9ed31f75624762fa862b0385f0e0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DE1JT1162451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30b75c9442d117e3ff39171ef8ef44344f558e48648b4dd57649b2dea805655. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DE1JT1162454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4674ea26e5c9bb390ecec2255f86abbe638507096c60067216f71f2afaba5dde. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DE1JT1162477.