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 0xe97fe0580aae7d641bf21149dd33270b3a73c258c016c9ac31dbd3f106cf6c79. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6a531909-b4e4-4216-b3bb-5dfa885623bc.json and https://artists.proofprofile.net/proofs/artist/6a531909-b4e4-4216-b3bb-5dfa885623bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die fabelhafte Welt der Musicals Volume3
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 0xe973dd302b3d62d865f0068dd20aa361bcf9647a20d0cd2e64ef1d65238aacdd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEZC62106248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb39b96d7fea8e158324979951d8fabd839314d8f74d1163de9f980bab2ba3fe. 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/DENM12000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7d9ae65386c0414d509b3ba0a79d972ba663ba7c1d038e5a085db1f2c54ba. 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/DENM12000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766fc5e0e229cada582028669970dc8aea4da2f6965da8e8ce4dff2d27254069. 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/DENM12000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a7c95d2097cb0bebd44051fab4f9e02b589906e7ab99d1900475d9a725a901. 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/DENM12000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cc23745ade80afb7588313db9982fd4bc7733691be992444577f72f2adaa82. 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/DENM11300309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad8616ed0552c8efe89a7f390f5e03c47c08395e9da91674d47f93cb4d49842. 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/DENM12000176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb160325a0a6873d9077d0fbf1f9cfb7672a69963fd81cd55f135eb7f342793c0. 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/DENM12000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580930052f4fcfcf30da83f438b1e4c3541e083fa7671d2e9014e67dea6a77b3. 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/DENM12000187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e4d654ac8cf03b6bb2fada76d0fbd214b9ee96991eb686ba2fc4bb5ae18027. 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/DENM12100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653cf1fde17457c155581b50e75d8e5fff0574193a83c086396774d4cec81f72. 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/DENM12000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4ff27c55cb09d9d5ae866c4bc23f126e9c6c201192aa40e72b6cb959a2946d. 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/DENM12100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae93700a0a26b866b46d2a6903eeb39b0ed5d55ffc98f308345c7bfb6671d192. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DENM12100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916df03a88b2a6831ceda5358f65c06bfec98bf2ed7a7705dbab1fd8a996d60a. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DENM11800282.
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 0x395f476e818bbf2054845a209f74e0be6409a90639efadaa1b615c145cecef73. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DENM11800288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cd5a933587ca85358d2516464d5777c329a86e0638503e3464cc5e0e1f5f6b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DENM11800298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bb134e1abe48b6a1bfc48e354bb4699322092a69da3defd68d2d467cedc7f7. 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/DEF069611700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedf7b1132af253f2ea0a4b0768a514253be2cc9ce8ba803de602f81c5b598b8. 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/DEF069613840.
"Tierisches" - Lieder von und über Tiere
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7da073a981807c922f0f00ea97ca494e4c4909b856553113aaa210611e3c9d5. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/FR10S1473147.