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 0x7573fe1e2565b9d2ccc0a8909ed447f5b6d43fb86c6a60c5c390450bc42ad80d. 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/0eb62f28-c1a1-42d0-9006-5b97cb1c6c20.json and https://artists.proofprofile.net/proofs/artist/0eb62f28-c1a1-42d0-9006-5b97cb1c6c20.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 0x6993dadfe3ac0055e3b4056775b517f5daf9011c8f77bac15db58fcdf2878ddc. 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/DENM92300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256939c8bb5073d1e3c9ef39b269c6bb31dc50ef82adb4582354684fd374e1a0. 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/ES84B1410057.
Hear What They Hear (Danny Howard Re-Edit)
Hear What They Hear - Danny Howard Re-Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393e0de580c7fc0b284eca3f9f0ddb0a31888d92735383464d17b0fe1b8a168c. 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/GBJAJ2300810.
Hear What They Hear - Danny Howard Extended Re-Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6f0abe115b2c63b8c0454b56a59bc296d6822bfe6a0e5b7d480fbb228f6bd8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBJAJ2300809.
Club Der Misionaere (Andreas Henneberg Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027c0fc8f545fc142d52b0b7b576b9d4fcbd453a1b99a629389e947662495940. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJAJ1900045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f1f2f3461cb9b8581e35807c102a08d047f200e2587c45ddd9d3fe274fa261. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJAJ1800559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff7052c65cab505afd00eb3836e98c746ae3d574b1c405ff8a432c6a486f5d1. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBJAJ1800560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c574fdafbcb15e94cd94ec8067d1d4ae2e7959c4e6dd018d667df93745df47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJAJ1601261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9875bdb2755b1299144b51c1e073c7936a84f144b314f65888592ad64893c147. 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/GBJAJ1601263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1451ed07f1b02b50423468a2c6c43dc6d496c02a326e87332e79ca87593f99. 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/DENM91090052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc8442d5658db2e3d8a35d3e9ff58e5fdac86d66c1882cdd7a603ca86c76905. 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/GBJAJ1600540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1efb84138f9a26fbb2a2948ee5cd80c9a38457988c8581abb19ed675c2c2d47. 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/GBJAJ1500234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c6892e583cea28d3aa362c2b8577709cc98635d90e7181adb356889e3747f5. 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/GBJAJ1302374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c08bfe07145191bacd8265de438a4a4d178303d05a5ba5ef55ec8f0d8e842f1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBJAJ1302375.