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 0xd38f2b9fde604d7bc557088fb243cf58f3b09e5cdf1483ca6ed788c9060e70c6. 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/4be166ed-bb71-4eb9-b1fa-58859e7b7827.json and https://artists.proofprofile.net/proofs/artist/4be166ed-bb71-4eb9-b1fa-58859e7b7827.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 0x93c28b37801ef72aa37ecc2e4a57edc032424fa93a6f9285945d099a5b02472a. 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/US3DF2264526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf747729c9fb503b02efc4ced0db3b17d862a7ec8e721d660c2403b1281c48bb4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3DF2261851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45216b12496b2e3d159ad64b8efc1ee87e21a6fc1dada690daa0e0c653d60287. 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/US3DF2260271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f05d25b12d179e08df36e09ac0d9578c417df2d77037302ef3462d69b906a01. 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/US3DF2260239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592d752ce893790050d608cd2ad48ce90e02497030a9509ac6850bb7b8948d41. 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/US3DF2261710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78972952669ef259fddc2be374be93db3427711e19ce651edddcff6af3addd36. 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/US3DF2264524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea76c7881ecf21190bbfcd0962662e9708921d2c738d9be40519dd81bf11c7ff. 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/US3DF2264528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ac5991d3681c4b0b7142e4680aa76ef6bffd3294f2fd91fdda9cac8ca9382d. 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/US3DF2261641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689ac2a17edadc5bedf1fb2ebc799cbcbfdd0fbce810c719bdda901e3e04f279. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US3DF2264525.
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 0xc4441e7273a46cf26209512bc706c90cd4b59cd30a29c8db14b0f009a700e17f. 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/USANG2280305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd761a2963c34a2feb0957b10670cedc738c68478b26e46eeac1edca476a80940. 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/USANG2280311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e4efd9aebe96af795f26a39c255f1963e612e45feaa87a57257dbe31be3cd7. 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/USANG2280313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156de30fe850d4cb5ce6bd68479a3b02d663c2f89dc263f3613741b5b095a450. 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/USANG2280306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490420e053e45d081b496c462431503d41bfc54331b5297bcd4e8d8ad87184b4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USANG2280309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9008402203d2d3a1379fb22597ad0b72f6df8446688de3248aba9ce196889eb. 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/USANG2280314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cd0893328569e202bf9571ff5fad34e7bca54f640089e33cc813fc2e5059ef. 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/USANG2242168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b445a7a5659e25e58bcbea20d718cf97eb0d922f6096ecd5947e1f193d3d55e. 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/USANG2242169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c40a67309c99aa39690cbdfd2d8c41ad86d79771fc3f2a3015112fdf73afcf3. 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/USANG2242162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5a0673f79dbc7cb0aff8bf2a5e4e8aa5f2bc46f3de1af3d41333387eae2714. 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/USANG2242165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504b10c05165b6ac2fe2fee25235b1ba709d7c9bc7d03ea09b8bfeceb8bcebca. 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/USANG2242167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e57955e954c038caf1a233b584f8c8ecaf5a74617a7f9cda7ed266f20205df. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USANG2242171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac02a0f0b552f2b466e4fd420330d905deb8f05b237f8aac3dd12b6dc0aa3d2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USANG2242163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed8769d147e0dee1004f9c626af3707a0cd81cf56f21ef5cb03590f7a73e59b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US3DF2482732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba04b998e41b1cf47f7e518fb8f6306ac9b5aa942379170f956813783c39d30. 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/USANG2235420.
Dringender Schlossverkauf / Premiumversion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1a941b6ee84724091de9d829f2a2e9293da7cb4b8c2ea5770cd85214420c78. 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/USANG2201234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a795ad2a658377f093401c4195311b7b844e5cb89e0a3d4de1770c75932ca6. 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/USANG2201235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843e653170ac9a8e4aed7632b1e9a09fb9b27ffb6b6aff837e4a6e2fb8cac79c. 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/USANG2201237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8164370faa956c555e8d8de37b6caa22b7668b3cd328cfb3cd0c882564744a20. 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/USANG2201241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13138f8d25b374f1f51d03abdbf15b3de591ea0db0bb5eadbf78ad84b6cd1cc8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USANG2201238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9f8a7c04e0a513ae445d674bca943bb51719911586a5e194a4785902f4994f. 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/US3DF2245208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387105435d077aec9a1269c496fbf15d72d78248a50ab0efa664dc51d97d7899. 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/US3DF2210772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaddf4250318f7883e7331e6489dde953b88b0a63cbae67f71ac0cbf49969dea. 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/USANG2403199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61105fc00589e8eced9fcc1b6c0dd35634a2aa47a0fa52ed24758698b14faf6a. 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/QMANG2221880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1982a09bd0e3318fd0edf4990f52384ee87718ab7568c3dbf844d2d64f10a3. 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/QM3DF2419064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c9711890fffac030412c5159af0ef07544888a9710e2a1df29d83eaa2383cd. 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/QMANG2426796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1982a09bd0e3318fd0edf4990f52384ee87718ab7568c3dbf844d2d64f10a3. 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/QM3DF2419064.