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 0x7618caeb99b1ad242e884cde4cfb6df4d0936b51b33d7b56bcfa32213ee655bb. 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/fc7f5121-bbfd-48db-b46d-4f4eb42a2933.json and https://artists.proofprofile.net/proofs/artist/fc7f5121-bbfd-48db-b46d-4f4eb42a2933.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 0xf4af6dc55a9c7b24ff4d290017d036c01ba39a49478b28d80797e2cbfd9bac44. 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/DEF077902010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea79319eb81008518411f14380f72e3f6e124c3d14ae0086b5138160e27c7b3f. 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/DEF078202150.
Ufo (Die Unheimliche Begegnung Der Schwäbischen Art)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1701c80ceee386d8e7e65025c13b09fb0f286bc0e7bf88963d013ae9f4e1ae78. 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/DEF077902050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ad72aac235173ab111589a47378744c155e256a962f0852b2fa817ce2e9a6c. 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/DEF078002020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260bd8165df752dd74ee79cb5ea010e6e5d9c29275fce271d48f3b200fa70793. 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/DEF077902090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81815bd31936c0a3c811b90dfaf189cba3c3ed6bcb17e7dffd1ce1d59c41aefa. 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/DEF078002040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8cd1df287da95f0f5fda7d5dd7ec3a84f3f9cfabb048bb97ee06bbeb5b12b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEF078002010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889ea9c61b162c78657761fb8b40f30cd4c9e997973c7278c93bdef6bfd62890. 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/DEF077902020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edda2c7b27394c45b8ebac6c3ea9175a4f81e56a09618ff57deb005649b359e. 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/DEF078002050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb488bf032fca5c342776ccd3bf2bd28d3ecf6482bb794a75717014cd3e263a7c. 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/DEF078202140.
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 0x110671f042d734e0e8d3fad29a13516be70ca18ddbe0ecb0fbc880ee9fa3063e. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/DEF078202180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd47a90df910b2e464a81c170e026f8f54426a920e5f3fba15e5ca2ec354aa95. 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/DEBL60722360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e74799c822d10b6200dd7c4d7e25c166a98de197e9b3aacb544200649b449c1. 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/DEBL60722363.
Stuttgart Kommt! - Instrumentalmix Mit Chor Und Fan-Power
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed00dc68d830d75f14f802375822ec9e1b6cc5e6940cf354380386991a409da5. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/DEBL60722361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd9fbd4680f878c04e78785f6ad2fc138bdb6c353d75deab98c7b48282bb9b8. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/DEBL60722362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe43d3279c05613b5da001e166eafcd4964295d13e237a26f49905e5d7da31a8. 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/DEF067603500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0485af54287db06ae9ef73622a391cbb1779b06128909b3765745547348a6554. 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/DEF087625040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01621291b6d6632b28457da3ebe96616d5b86119e73cab3d5e1551bc62174a6. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DEF067609820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c63e7a98e49f4ea19609b69138c6a4cf3bd48f47d81308fa4d273d575fe4fe. 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/DEA017600250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d9f35b01e346452a0a37998b1234d0be46af16d66b4356db3226a19ad18936. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEF067609850.