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 0x5d03f77f4cedd110d4a9fc0a71d06abb7b510395cbe2d40497ba6d3255e6d8ac. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c71a4a89-16c4-4e25-88f0-f1e35f8ddfe1.json and https://artists.proofprofile.net/proofs/artist/c71a4a89-16c4-4e25-88f0-f1e35f8ddfe1.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 0x492677598aa51e5f355068f7ff61b05da17243ad65c9193abbab208c5fc23753. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBKQU1371022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84433206a424d826487ea4f93d4f3e4a65fae746338b51dff38ab7bc7f52422. 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/TCACK1569445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ea9b3ee2cfd42fd83c32900bcdf68889bf617d7119415ca316b1c263909fea. 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/TCACK1569449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91b7795327dd34417cfbf49fc6ec91acfa7581a1cf8213922ebd9509d8bafdd. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:03:05Z), 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/TCACK1569450.
Court of the Twelve Trees (feat. Phono Ghosts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cd6c094711d1a4cc590f9605d6f871c79bf7718a80f51e22a4c0db542a25f4. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAHN2374271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b5609aa840343d5c5e92ab9d55e56576397e3b6f52f831e0c9411ee86eab2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAHX2489820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9a6f531268252c15d46c47f78019f356877c9f26fd878696d30d0544207af6. 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/TCAHY2477289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8701fa59cc472b846cf8022eb96eec4b794e9052369eba64c9709e661e0b09. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAHY2477294.
Diskette Disco (Tommy '86 Extended Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8704e6d8d78a2d6345184d19fcba0fbaf06e3daeee622f549fccf1383c636d. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAJC2447787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b538cc55811bb748f3c5d34a351e17b2db795c1a83b26bf75f6b8328806fc69. 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/TCAJD2447832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba2ec1cc7fefc0cbe172cb707d852131cab91e4b402c75b2becc259afb487ef. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:41:38Z), 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/TCAJC2447844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3311182b919f4e3f212913713ed6d0805f8838d0e6b1a7e3652eb8d96fd0284c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAJC2447892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0a40acbfc33ab514a89c934663566aff6efe921b996ffe5e524f8e4d91ddf1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:33:18Z), 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/TCAJC2447986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5499739586396c2f2a4b77c28e9a3ae5e14b64c087d5981b3bf9c1f93eaa2a69. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAJG2598988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280cfdc660a21c3b970d9fc77483a1a0e8712cf4f4500fa2336b42cde726c916. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:22:06Z), 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/TCAJI2585626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1131771eb17136b21b7059bbf79899cc340ac95fc5741db08129fd41e2d0fee3. 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/QZTBB2599381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed7ba04c8c0c3bdc1b22ab1b2d48cc256c4702e62b076170df52f10715e1970. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFW2525815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ee639cbaee687ffaff2695d67fb773de5f81e2307e9d0a4789fb7507ac61b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAXV22000018.