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 0x70eee0126dff62e7dada3b3cf3522760321e721c1ee5144b23963bafd73b21e7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27e9be67-587a-42c5-a890-4dabffe88629.json and https://artists.proofprofile.net/proofs/artist/27e9be67-587a-42c5-a890-4dabffe88629.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 0xf72518858a76463e233136ccbb1422e1b9658314aa63b25336fa19329041627b. 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/DEQ121750180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a06843af9b276483905213baae45463603940f629d0499b547bb2e068125059. 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/DEQ121750181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4841c1368e38627a73f65c2f7ad74987d2568fbe03519fd94d79e44c70dc10d5. 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/DEQ121750182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3eef48b5683799187535d7a35a2498777a4906e7147776889729233e5b2a3a. 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/DEQ121750183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f6ade0ade71b07a7766e51b5a87ed228d5fa9897fb122f2f4021d0f79db818. 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/DEQ121750184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f0920a1e62f2c942e224981857efe69b5f8da23946839943493f3f68ccedc7. 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/DEQ121750185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43500b014061a9fdf70a706aff06ef211842fe26d516a8c62b15b6652b92375. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEQ121750186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8578c1ca6e729d9c5d0817464066cb1aabe3b46dea205d9bda33e4d21bb3d5b9. 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/DEQ121750187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05961937c05ea18c41ba8d925f2c5e41156fd133024099621e17810107f7f777. 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/DEQ121750188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce13a3270869fae3af0da97632ce835a702679c630600de6e1ae55ea4628431c. 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/DEQ121750189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fab9d620d9af8a6c9bbbac34a78d8bdb53113d84dd43611050c2bb1a5248de. 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/DEQ121750190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8e40926829264ee760b29dc8bff51105db59218d998a4e5e9129b6f41ede66. 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/DEQ121750191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9fa039b6077c5cb1a0d221be6166485c885cfbd6562ff1c5bf52f456d1199a. 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/DEQ121750192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb77caaa5096cd8e689849c4680a484cd097cd6a7804689ec064c0fe78cfcd7. 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/DGA062493127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cf361df1c7a550029b5055d46b8197e845ffed7e3d8d529767acca02f732a0. 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/DEQ022004002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6665cee998e1d0385c9330d745ceabf11f7999924e0793a8508d4c261680c29. 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/DEQ022004003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fb968316c4e5b21fb5b66eccfd1f0a27dcaf567a831b4bf36ef9de73489899. 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/DEQ022004004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13b37558c467f78c2bd0826eeafcb09cb0b32d7cfa518ed12635c5344aafa0b. 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/DEQ022004005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351491957638ce3d60a3e2dce86345ca421f04f857bd56314b859908714c30b9. 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/DEQ022004006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8951291233e0195e9725a372e07d4015a950bcd37a93e89367652aaa5d23d56e. 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/DEQ022004007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d71e8508e111826fb4bbd9c187aa5e5c715501d16525033908c082bd666693. 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/DEQ022004008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca246658cc58764e563cd63124762a1eac5e93179afe17e19cd0ba83c19a202f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRX201962822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51cd351a3f914a13e2cd3d47aa6db894c67c118d4817d2710239d2211c37eec. 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/DEQ022382413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e89a868b98fbf98e49140e926c16697b00f9736cbfca7e94ef28df2f77c840. 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/DEWH71900503.