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 0x9515a39f5c266b4cc46906ceefa19e2646520f55a9b63b1dc6bf489558a20f16. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca57dfd0-067d-423d-b8a5-54bf2062bc27.json and https://artists.proofprofile.net/proofs/artist/ca57dfd0-067d-423d-b8a5-54bf2062bc27.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 0xa49bdafeffec1baf5a53ce323c4e3310d0c6129888453eac4b31c0147c5a6037. 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/ITI022500788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1921ccafce04b1e80e5ba4d345e0ac6c19bdbec5efac7a5d73d69add343a6e. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/ITI022500789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a8877a72dc023a0298af75b148fa6100850177996b8426297f2e649cb84f3b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITI022500790.
Jazz House Instrumentals 2 (Jazzy Soulful Tracks and Instrumental Club Tunes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7336fbc082feb3b4ef0d96c76c01d424b5710d80ac810e10b504134f7219de. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ITI021800811.
The Modern African Spirit (Soulstance presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdf4d12f82b9b715c59b0dca78499af14923ff87fd06b39394be5cff4d1a38f. 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/ITI021800453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2f75b1c49f1dd801838b305875794f4eec6821b94496ec51451366fcb57216. 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/ITI021800457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af896081fc042e3033cba7eb6a0281cb8b0e64624a3c23aa971facb209daaf3. 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/ITI021800459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c0b166574d27fc18343083a8d547c57b615e103ac5def70cd6ffa50951c21. 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/ITI021800455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf67e6c248880beb367c427d74a8c49fd5484b79927020e98cca76d7c9a658c. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/ITI021800456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cb46a29c92a2397e55cfafb9cd06a9355ea21740e1010eb844f9c19b80d3ab. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/ITI021800460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b43c28472dfee555a0ba01d23e2cd776e2bd0b498e62ba257a52afb4222b3d8. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/ITI021800464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d67c744d7f4be142a89be11fec5eb82f466b5718dd0654477d2652e4723f79. 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/ITI021800454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c0b6d9907f1f03e3d28c14995dcd0c76310adb2e73b5a8239f61ec3cf5f372. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/ITI021800461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1653a49c17e224bbeacbec9d68926846ef4871e33891677620a0998cda3d261b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/ITI021800462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918c470681cf3f21cd88eeedeec28281602e5686608c50927c0af9388dc88574. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/ITI021800463.