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 0xbca9c722f6c19088b26b166ddfce6289615b2e673c39595a7c2ee11342674e82. 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/a2041dba-a680-48be-95c7-b7095e41226c.json and https://artists.proofprofile.net/proofs/artist/a2041dba-a680-48be-95c7-b7095e41226c.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 0x95fe13da8fe08fae9155b32889287585a5b24023b864d8e70478666e52add970. 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/QZPJ32180873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f293bd72e54d199cd16d5082b0f66c04b8863ae0d9a1ec3694241dcf36ddab. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPJ32180889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe528e532825a7096eb5abf689efcb84a7a121c1cd93c08ed43e2bafe7bef855a. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZPJ32191855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dc0b754168fe213f1d9ca21a48543d82a82783a346525ff3a8dd67368b9ce4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USANG2224390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642a0a5e2ba52e93bc3797a0e43b740c4921964b9faea33d9de5f433b4c2e39f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:44:15Z), 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/USANG2224399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5c760f4fba4fb9746a99b0d77059a7e123150860be2df72c0ca4e911725e36. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USANG2245035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2141dced5661b20c47d9f9073a079f48acf10715fc9802e98fea4fa5e9cc76c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:05Z), 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/USANG2255121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa767f3f816b97719aca3125bf60687814c4f5bfd7e1ecd767b3036da4e61731d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USANG2294549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b2acc9faa67132c8270dd03148f507d0f44d37a213b5a38c7509cde48fba8e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM3DF2200120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0983698a13ee3dfe84dcce3721c60a827cf57c37a55d74025215486cf284906d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:42:58Z), 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/DEH742504097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c63b3fddd1cd1e2b85e9a43b888f9972653ef2e0ec59ba3de1f79cc427f400. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USANG2526659.
It’s Beginning to Look a Lot Like Christmas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdc9b022b83a42009593e6336b5286ba042c2f01d7dd91066e0cd42b7370b36. 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/USANG2487835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b63fc58d3c79de8b3ac5de3f670cb1f40ce59b687cf63cb70768979e90b4652. 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/QZPJ32167594.
Lofi Autumn Vibes - Welcome to the Halloween Bakery
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b63fc58d3c79de8b3ac5de3f670cb1f40ce59b687cf63cb70768979e90b4652. 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/QZPJ32167594.