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 0x6e0d44dc5b7f3773dc5831ea1f8eb4c455da0944e58a389d5f39f900f6f85c27. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ab4c9f8-1981-4dc0-9d41-1de0440e3fd3.json and https://artists.proofprofile.net/proofs/artist/6ab4c9f8-1981-4dc0-9d41-1de0440e3fd3.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 0x524e49f6643f7fa8e7c16932e2e5e8728098714f7ca0b4302c802622e9f186ce. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATT250607160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bb707c4118f23eb80e2e723730a2a18cb8f3f7d89daf15f93fd84af8bf8226. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATT250607200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251cd30844301a336ea49bb7f0465f32b390fdd846116fc994ed2905d82bdf39. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATT250607220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d51a5164622613ba8a395433e0708a702bc7fefc7967394eeadf0bbd11d98f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ATT250607240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad84dcf88b936573e3da2659c78f49294fd55541bcf315d80bbf933f943b1f9e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ATT251240300.
Wia di Olt'n schu g'spielt hom jo so spiel'n a mir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2834094d485175d242b8b08f81d1be7c1ef22a5580221d2725966d2cc152d21. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATT251307200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706a4ac4f812b35a6982dfb0aab43fa811e8831b378ffe10142ebd157899d59e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATT251307220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852440449ec600596fbc81cdc709d68dfaf97ddfdb819657a7451b0f34e2d5fd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ATT251307240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7594eedfb88d4e8abcc7e7b3206296a90110b799600ea5d9536852bcde518839. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ATT251307260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c383fd19e4792624aec9aad6d19e20817e94e87c4e36bbc149f9b248373cde. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/ATT251407390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d5a2425ff08de70eae05d8071dc59fb8fca3330c3bd6c974b163ad298a96e4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ATT251508410.
Jetzt geht's los-Stimmungs-Medley: Jetzt geht's los / Trompetenecho / Frau Maier / Slowenischer Bauerntanz - Live-Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8926c2cb46be6d8e6d318cc0214555e457b696d4ba2986824d8b5dcfbe911d61. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ATT251607230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2f159308d01df035146e873f2cd5fa4ef95c4dedb74a3e2c94aeea18899fe1. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/ATT251704910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ecd7386dc5d4ed8e1fa4095f8e6d588698937470a5ccd100bca5ee0831402a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATT251704920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf719ae2577dd6db115f2ffd3aebb3e8049478d6b88762c8b6eeba79155cdc968. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/ATT251704960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd141a73e32a076d26d7b67d76a8798076425dc5130f1fd8184f8cbdd2a861738. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ATT251705010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fa20e92d741d22798504f3a929cae83bd88f0e12d74c98cc4f799f3f3c21fe. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/ATT251805880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567ac47571d0aa8bd6feb13c5025719932ed3ac3f954dd2a7428f4cb616810a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ATT251805890.