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 0x6937f98645cd505a7adcd375ba7119b88eb0c681d0c1c4be3c3806e1d30ac549. 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/a35d1099-9642-4296-a673-83ddc51e9a4b.json and https://artists.proofprofile.net/proofs/artist/a35d1099-9642-4296-a673-83ddc51e9a4b.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 0x525d48e2eb93694424579c3cdfd332ecae4966ee7dc9b7050ea5a96f47dd12d9. 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/NLQ8D1900301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b24f0098fc23c258d250d192ed33784b996016e43127ba960a05e8627092228. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLQ8D2100840.
Gimme Gimme Gimme (a man after midnight) - The Rocketman Remix
Gimme Gimme Gimme (a man after midnight) (The Rocketman Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5b251fd9d8f586514355dc605dff7054856372c0cc6a1bdafb27d46d064535. 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/CA5KR2363687.
Gimme Gimme Gimme (a man after midnight) - The Rocketman Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bc6ae31d1af5f580fa6141dd74f2baee8037a3e98aca096b47456983ffcc48. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CA5KR2363688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee380cb7f4765666ca4721d751d7492d4fcd19e566231fa7862446b4bd99dd9f. 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/NLS241601761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6115ff9ea45cbdab4823e6675d104c043159545fb7d858bde00612458e345e1. 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/NLS241601760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6def535058b61196327c44d1581502214a1e0a0a22fb2a6293725514be9b52. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CYA221500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ea6e71f4c3aa616e2737e585c71eaf4dee93063aeb740dd032327b198537c. 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/CYA221500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10cbc93355c7a549aa076429d408b5e36533f456809d08be01dacfe237e31dcb. 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/NLQ8D1700519.
Armada Stream 40 - Best Of 2015 - Armada Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a775f95dcc9bbc449cc96799c524061eb776ed55ad4f1e73e5ade20fc22df7. 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/NLF711503527.
The Sound Of Revealed Vol. 02 (Mixed by KURA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3830f2411f932fb09fc29ad5dd9b658e97e29a7dfa0053a5ce81962278403c2. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NLQ8D1700394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d8429056362feac4e9f4e2da84f02b5380c89da75333de91e8e976fb4680f. 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/NLQ8D1700396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133aaa69da96ca28f52a951a7851f688e7a59071f489a3f42eca167375b964f8. 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/NLQ8D1700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29bf809043b5668d9ef9a6bc765c2f83810e293ccfab501a6a08f00e277ab97a. 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/NLQ8D1700242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c70231dba80f75435eed03c83d88625d36a2c6eeb7a4b7b5b63cdbd8f321fc. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLQ8D1700450.
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