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 0x22f60858f6e01ca073f7aa76ec9d17f7f2ec3323fe85bd1d348491d60f92cb94. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4998231-46ae-46b4-97e5-aae88fd494b4.json and https://artists.proofprofile.net/proofs/artist/e4998231-46ae-46b4-97e5-aae88fd494b4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x974e413e4f88879268a3df7243f84956f82002c81180f59d77dcd554e23f2623. 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/ATM891402150.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dbfde6315f7114b0f97904ceff298242c7f4f8bc0edfb336dde933c74fa98c5. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ATM891402152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32460074a3cd2de005840d789a28ef6d74e8d48fe0bff61e2cfea055bcb22e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:26:55Z), 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/ATM891402155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223c42b8564165a29dc47cd4c8eab9651d31e0af110b3d4b12b0ad292042e23c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ATM891402158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50160139b5f0268e628db64e2829d955437c96af46c90cbd2449f331dcf7fddc. 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/ATM891402159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34e36ea30e80c1ceed084514d51882dac7eee9f4d088083f49f403d7a6fac61. 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/ATM891402160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef414a5a5f019e51022847dc5ad6bf10f7b3211aad76efe818ef517a4204639. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATM891402162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0710903a67f47a9eb50b9ad30060f86aa1bdba457bd3bb01213a5b32af1e17a2. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:38:45Z), 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/ATM891402186.
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
Fass den Entschluss / Halt mich ich falle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52706d46b5f9edb6dc90c85950b9020eeada771cdefb0d4655862724ac78c2b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ATM891402161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3571c774da6592bab11a2ace16836bfd273f8bfd3333dc7d5f2a9dadd5337142. 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/ATM891402163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0e8599b2e565fa72575422e0701906c38f47726928b482224c8d1d463ccaf0. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ATM891402172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb81cacaa4c56a071413c30a385e8bd041b13f1f534c0182974dbdd649351ad. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/ATM891402178.
Fass den Entschluss / Halt mich, ich falle - Reprise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f0c5541ae1046fbe445673ca8f976f8b1d063f835fc8344644beab2423bac9e. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/ATM891402180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126521d23d98a0bff14f5e2b881742057133f9a16b7c58310432ce43ae8844fc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ATM891402185.