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 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 0xce0c255436865d4c1cf8d05a77e0408b6ae79fd3faaf96251e752f16057e184a. 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/eeec2f23-6cf1-4387-99a0-ae3d6c3a0a37.json and https://artists.proofprofile.net/proofs/artist/eeec2f23-6cf1-4387-99a0-ae3d6c3a0a37.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 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 0x3975bf0d9c63add7f75e6fb48b097145f63ed5f78d250287aca817b3ab7f6fd3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEBY41200731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e94a5d7ab6b6f69611c4c1d4289fad7f63614f3023acbde48ba2071e246753. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEBY41200732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc48f701a7f7a5d927a889dc30ca165ddc3edeaabe434e053a9308a5225db2c8. 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/NLF712107163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55a58056ef7c8e8ad5bab0980a64cf664bf87e3ba4cf8ddc89eef63b23b146b. 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/NLCK42219029.
All It Takes - Kai Alcé Distinctive Vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b63f3298464c6563e8b6a5d33e5831715f7c30af700214da6d5b4823f5f473. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEY161707204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d817ded894a624fae136b5eab33a0f21b4a74eb0fc4be3785e7eaec80bd7fa. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/DEBE72300899.
Chocolate Puddin' - Kai Alcé Instrumental Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd26c935a7539d2ff2e29349f4130b56c167faf1368a4e86b318aefca02b647. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEBE72400161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce2bda9085e277273fdeb3e585cf6b52b649a3aaea5b479467995f1c6f19947. 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/US3YV0900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7188e6956fcd64a8f375d2981acd3e958876c1f5278fb41d9b3dd4092de3ce. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US3YV0900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbf527b4b818bb006cda28c43726cb3f66b3134fed0bda73c67e2b9f2135b48. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/UKF4C1601079.
Into Your Story (feat. Jeremy Ellis) - Kai Alcé DISTINCTIVE Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e532005d6d7cb280ef1096ac9a1354010e9d6fcf8da4f247deb0a89aaef699. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/US6RP1000140.
Take a Chance - Fingers Ambient Acid Mix
Zepherin Saint Presents Soulful Culture, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f68c2a005685e9c31e1587db65b427cb024dc47c7c1d780a7769a99b20b46d7. 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/USQNW1501308.