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 0x1280824f97996ed18eab7a997407c3030ef559d729071f101767764ac0fef667. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b3b5ebd-f3af-43f8-87df-3c90f380f757.json and https://artists.proofprofile.net/proofs/artist/4b3b5ebd-f3af-43f8-87df-3c90f380f757.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Doppelfolge 01: Die Nussfreundin / Sonnensommersprossen (Fidisophie - Quatsch- Und Querdenken im Baumhaus)
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 0x799c74d536c55ab248170f66d5791c074385d396278a15707c21f12b58a5ceae. 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/DEPI82109805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd884d61063fbfba31b2f1c9a40ff6a626a5bc0d8af5411c2af967cd289a10196. 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/DEPI82109806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc056df51991f25969b778071b73bda64058a4eff5d529c3db8ddde44c02cbfab. 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/DEPI82109807.
Doppelfolge 02: Glückspilze und Pechvögel / Spiegelmaus und Brombeerohr (Fidisophie - Quatsch- Und Querdenken im Baumhaus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78cfe13106a00859bac64241e1343e35ac96cd137acbb6648ea4f8bbd99f97d. 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/DEPI82109809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ae68579a8479d5a9b66800d99991249b4491e2e1a11145a5d43e00f1ffe3b1. 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/DEPI82109810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0a8e69960d27fba7da98a068ebd5cc970dc3d1a7bb1f69bcbba57e8e66e40. 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/DEPI82109811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5662fd106481feecf72a0456006a6baa4e40ee243ab24e6d00b0268fcace65bb. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/DEPI82109812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10791fab75fd83d0f4cb8447d4f83daa5a6e06bcc0637a62b6d6f6f3d53b105a. 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/DEPI82109813.
Doppelfolge 03: Die Glücksdetektivin / Das gelbe Gefühl (Fidisophie - Quatsch- Und Querdenken im Baumhaus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eabe912feeaa787ea686e010247f8b11f78f7c2bbf9325cbe9bda64de67f6e4. 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/DEPI82109815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035a3027e80abf6388f5bdc28c053100169c1226c1c8a83f1aa1568389fe2f1f. 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/DEPI82109818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde58bc6ee5c0eaa3bfca63a6352385ee20da1e9318608571d15d8d5d549ecb0d. 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/DEPI82109819.
Doppelfolge 05: Die Glitzerdingsbumswurzel / Lügen haben kurze Flügel (Fidisophie - Quatsch- Und Querdenken im Baumhaus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aaec881b0b1bc731bf08281a46c370d9bcebeea89a94695c843cc48c6dafe9. 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/DEPI82109827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a7da35160fd17335ec36a907154f69b21924b4ca974bdbf8c700698c298350. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEPI82109802.
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 0x9c36e5f48ae885e0fe6efb29f015058a25d677959a9eca6b72ca5040c840e6af. 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/DEPI82109803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152b9a20edbab3de9fa492d88d39c8b4be54687fb6591d52680c11114406522. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEPI82109804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf456cf53b8cb500a1bb56a97c390c9feb0e5b29800dd37706f604a31044bbcfb. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DEPI82109808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaa6432d4552ebb2c44887c12d4bf10c8a401cc17ac603e0233abf80b43427c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEPI82109814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee663f82ee5283dc16a99ab0701ddba2555c079cf9cbabc99e9705456f691c9d. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEPI82109816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dc874c5a0490c95d18890c29923e4196b59ebcdc54dc91f972508d1958f73a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEPI82109817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4fc656921650bce061d7812941f037a44efbc869b07abe1a5111377f58866e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEPI82109826.