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 0x9136237d8ce7cb400a9d85c1b9579d99f9e8961eaea30283bbdf3d333a4ffc5f. 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/1b020b46-a066-4057-8b30-bfd613d5dfe7.json and https://artists.proofprofile.net/proofs/artist/1b020b46-a066-4057-8b30-bfd613d5dfe7.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 0x2bc2c28c48f03c888784e6b9f175622878be5a6f032218e31102fb737c90547b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX8KD2433290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065a2be06fe6811ae77fbcccb2560f48ac4bb621605b1b301041c7f48a024c06. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GX8LD2468759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20178d82daf4a4e63bcb0a8f7c799510417c119118a56a38a62097d30ddeb4e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GX8LD2442847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd457af93d94ed45bd543b1e46763cc5d6010724383651075c2f9541e8b37cd. 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/GX38U2469727.
i like the way you kiss me (Drum & Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40b0e831c34bd2867f1966ee8b3c280423c6298bc131c3303e1f4f90016fc08. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX38U2480880.
Wake Me Up When September Ends (Drum & Bass)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacec0ed447a42d54a2fde2ae33a2e941912531ae3e9a9c2ee9a938897aa5ad58. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GX5MY2449960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a9c22f12f1b108fb04bb2b918be0a2e425f313163405206b99e44437f0d7b2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GX5MY2411018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb83c011236054697523f3c5e7078d81552e9aaa6db1a9dcf6f99eb996ded9e9. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:06Z), 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/GXESV2486679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7109467954a9587340715df7bf43fa9c97c558b481c61a7fbc2fff04e35866. 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/GXESV2403717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78082f871d5721bab24b15177cd8f8664d256c267b6e9242ad1455be5c0acbf5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GXBDT2488040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a30781b934d4a4a4c7ec531206267a82aab7b0a1305fdb88e9969d7a8b4bde. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GXF972490397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a6b1e3d729607a957a3daf916c95be6c43179a92ac69da274c1115f2a6aebe6. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:07:24Z), 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/GXF972441112.