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 0x663d12204fb52a417b6866bc6c3f16885bdc8c7253f2d6d7478c662b07c04f4b. 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/07f1bab4-f6dd-41b5-a685-b26a928ffb4d.json and https://artists.proofprofile.net/proofs/artist/07f1bab4-f6dd-41b5-a685-b26a928ffb4d.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 0x97c12245c4028cb54af86718f5cb2e1dc3a55539524c47c5a65a3b620c5856cb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:08Z), 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/USSM17700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296f493ea8a455a5a3c5fa7d22ef9b196867cdf618001b39fd488e2b3c38ac78. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3270403165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eab2c8603f17a0d40430878127a8717a461d004e6a7d7c129277e5c278d0dd. 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/QZV9J2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12efd820f5a52ed187603681288a539d146535b6c870b86d4cb34a6280f05ce. 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/QZ7KM1700045.
The Life & Songs Of Kris Kristofferson (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ac2b1bb82e238c34de367de17b7a32564fcda50ba6f73724c267728e8aed5a. 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/QZ7KM1700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12efd820f5a52ed187603681288a539d146535b6c870b86d4cb34a6280f05ce. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZ7KM1700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1dc01fa61a04682d4274f9878cb5a0663e2a95aafd16931fbe0d76204d46d3. 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/USSM10107062.
Heroes, Mentors and Friends: The Legends Project
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482ee3c67caf19dbfa21293798b5c87370acf14e212652b1b75dc5d816d05ba3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USHM92074822.
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
Voice of the Spirit, The Gospel of the South
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ac62c013c6cd5c7b1bd2d9c214fbb433ecf8cbab4ab296993e707eae33eb47. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USDMG0622810.
Kickin' Back: A Special Gathering Of Good Friends (Live / Vol. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e6840235219cd98858a0d743053be56ff30e560dff2430bd223d872b8d4968. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZYJQ2000018.