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 0x1ab8ad4339e5ee9463c2639e1f2c1c00efd41bcd5ff76234190aaff660ce5c27. 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/06e20509-864e-434d-b61e-23aae1768eda.json and https://artists.proofprofile.net/proofs/artist/06e20509-864e-434d-b61e-23aae1768eda.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 0xaf350232794aa860812e9c17b1c537184eb829b8c80f27e483e34fa9e242a973. 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/DETX42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a9da16642ab437c069dc65cdb8ae215ed571036d44ba46241f85dd17fd917a. 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/DETX42400001.
Mama hat gesagt - Gestört aber GeiL Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23e200b26f5b3070e266cedbf21c1d4287655081642e70132d7e5ca83c92c4f. 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/DETX42400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf350232794aa860812e9c17b1c537184eb829b8c80f27e483e34fa9e242a973. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DETX42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf350232794aa860812e9c17b1c537184eb829b8c80f27e483e34fa9e242a973. 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/DETX42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf350232794aa860812e9c17b1c537184eb829b8c80f27e483e34fa9e242a973. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DETX42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23e200b26f5b3070e266cedbf21c1d4287655081642e70132d7e5ca83c92c4f. 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/DETX42400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017822d6d5816ac344ca8d9818ae36de1b05d14e5c532f881bebafeb56adb210. 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/DEUM72110611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf350232794aa860812e9c17b1c537184eb829b8c80f27e483e34fa9e242a973. 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/DETX42400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb28e346ec4199963d903b3b7f09218cd5bba19cdab7755ef478ec6581a2699. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DE1FB2400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558fe2096972828b07f8569535071adf56e48c5e929aae5f3c701361222a994d. 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/DETX42400008.
Mama hat gesagt - FABE BROWN Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc3190c4f925a681cab78c592d5c7a22ccd7a55ba48235dd43f536f17ce29b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DETX42400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf350232794aa860812e9c17b1c537184eb829b8c80f27e483e34fa9e242a973. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DETX42400002.
Mama hat gesagt (Gestört aber GeiL Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe23e200b26f5b3070e266cedbf21c1d4287655081642e70132d7e5ca83c92c4f. 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/DETX42400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6cb2f27477e28d73165930469104609cafab7ae0ec999856c95d95a6723e83. 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/DEVY22100043.