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 0x7b8a238f49f5194572dd364acebe87f4e59eccbbf09106cdabd62ee27cf7a765. Chain 2 (Bitcoin): anchored in block 953772 (2026-06-15T10:33:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c55d7d79-6eb2-4778-87b3-d201ba9ce5c1.json and https://artists.proofprofile.net/proofs/artist/c55d7d79-6eb2-4778-87b3-d201ba9ce5c1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dracula - Das Musical (Live aus der Wilhelmsburg Ulm 2021)
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 0x8d21935713d1125c98ef6c44191f5b3fe699c64e41b514985fa2f13c3a488c2b. 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/ATM892203417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8b81e621b5feaa713aeb4facaa4a15a19c34c4c431e0793523cc51f9f5237e. 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/ATM892203421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aa3379c55077181a67cb49285695c106f9ac0ef267e09e73671c830cbf5e60. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ATM892203423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b8bb3c1fe3c2bde78c5bb16988565e6e5e484b73d648048728446969afd1ed. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ATM892203425.
Ein Lebenstraum / Ich leb’ nur, weil es dich gibt / Whitby Bay - Reprise (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb051289922ac565faa781ebc8b979ce51d913cc9eb41f230da3268f2a206654c. 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/ATM892203426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61e7a81b2b9e54a15126990ac3f772b7cc42a55ba391dc9553989745945c559. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/ATM892203427.
Lucys Begräbnis (Mensch vom Weib gebor’n) (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b5fb57b5ef4af5573e493da2d7449d315157b51067306dd21f0e643310b615. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ATM892203431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ffe2c9d245b4a25e50cbcfc8dd3787869458d8dbba2c6ffc8f43c0ffb81ec6. 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/ATM892203436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02839035d0fdb580e21751bcc237cb7f4eb1343384cb883c0aac772c37d6a8f1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ATM892203437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12173e5a616777901276d633b599f0f3fcdac945f48db1bc65e12272a21ddfc1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ATM892203439.
Minas Verführung (Für immer kommt ein Morgen) (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4896e6f7f3574ffaa1c98170ea2b8be6959c981b4381b11a16c8341b1800fe6d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ATM892203440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a09cb55295d1ad6ec97e19120d5d4b95036f3fe26b48c9e761d4df25eda0e0. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ATM892203442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe886d3f4927c62c2fada7f90879869c85d00ae49df7e65b093490f3cda0e08c8. 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/ATM892203443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ee11cdee171b7ab1aae7114f1f3bb6874aaa260bb386b1a7a48df92c5e242f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ATM892203446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe082eeb0d8f4a1a9dd84d48dadf3c1e5f6ca64314bae80966653e36ef95cc32. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ATM892203448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a3e22b3cc5235f61ae4ab4571169387da4ce62cc1324722d30b066496ba80f. 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/ATM892203449.