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 0xe0854fbe561aea923a67ed7222488264a6eb817253e4d5c2157725d600094707. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa5ce6fd-691e-4c97-ab4e-75a28d455caf.json and https://artists.proofprofile.net/proofs/artist/aa5ce6fd-691e-4c97-ab4e-75a28d455caf.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 0xd143c09ca6634ad96ea4f16a459cd3a5c8e4cf53e87ab5bf52ffd06d8b509377. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/DEB630208501.
50 Years of Country USA, Vol. 1: 1941-1961
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35befba0e314d55357aadd5fa7ca968d219f0ab1c88428c8f4f81258dfb17c2. 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/DEB631372341.
50 Years of Country USA, Vol. 2: 1962-1986
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991f1e03984a961ef9444976b1030eba22279d5a1c2ce1106c960f811b73c8e4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:15Z), 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/DEB631372426.
Rockin' Da Island: The Big Island All-Star Band
Rockin' da Island: The Big Island All-Star Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9da1bc24c67ec8f8b39e0ec10db8fe2157395bf4b99a928cad665d02bf2090. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEB630979205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabf3d4f9d4a106e1e3d800d656c21616782971cc9110ff167032fad533a0915. 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/DEB630979211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2928b48748f6dd210505b309db02b891a1ff3c94732b210042041ec4b02254cc. 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/DEB630979213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb1df1138d89f281e280070cbdb4a357ee0ffdc0a006a07557b56265eac05f2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB630979215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4244bc9d13e5e01df7cea8ba44f7365e680c888305c22692efb455b3a00ac54. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB630979217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbfa4d08d886dbd316b4c9c3ecf4ffc44d3ecb33110c94b584e53054990b7c0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB630979223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792eef04bc3ae8530233d78c2c79f464b9d1dba5ca163ecf5c9a3e7e7d834ad6. 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/DEB630979229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8ff0a452da29239e23cbe4d865fadf44fb6cbed167d163c9c1cca48bbf7aa4. 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/DEB630979233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253cb20e83f123fe0965224b46ed59e819ce64f9891cc4b98e1a674a742059c7. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEB630979201.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566f33f257e9ab19b8e5f3d78fbddb91a044103cd670e2db65c0b1e229afb7d4. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEB630979221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cd0ccebacc738666718ca0f267cb988ce5bebb54e162233d6c2b75f20ed07d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEB630979225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ecb4752de676c9d75d761b561b92baaf60aa876427f8c0157befabea1bfae3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEB630979231.
Rockin' da Island - The Big Island All-Star Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7e6df252bb6831bfa3322f0ba678c52b4f7593547865646816dcc3696a8a04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB631177905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c05e7599e135ed0283057db47e8f88e592f58b4b58927a35eeb15685bd37b66. 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/DEB631177930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75217bae989749a69f049863fd535f3a77504635b8995070e10f1d474a0c4a0d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEB631177934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc73abe68b62ada8e6587239e1e15408f3d831f8c35cc56b6529c3df4c360e94. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DEB631177938.