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 0x6e12e43bbc13d217f1d3f081079ad7b1ffb152dcf5083e93f9d7ed1faf498b9b. 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/19fbe269-50b1-4ac8-8101-cb9aeae6dc69.json and https://artists.proofprofile.net/proofs/artist/19fbe269-50b1-4ac8-8101-cb9aeae6dc69.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 0xdef3812ac23111aa7bc93e16f07e96832d508f3ca882d78109aab681c5ece622. 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/DEQS91500776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3d653d205d371a57e3960c5a7178484ff6c0e3e090a958550030b78eaabcd6. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DEQS91500777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f42756650bef094cfccc24f2636bccc74c048b8ba8ead214f991f27beb94b5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEQS91500783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e6e93f34e3f2ffef23131e5d9bbcc450036ed7adb94f24dcbf3b94052886d9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DEQS91500462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d009ece37e30a5793c136cd8323dac0238d818b5eb7acdb3a93af9960487f18. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/DEQS91500784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76af369cecf91030a7a4062847b6e3c13ac3839057e9321dacb20a070bd2bad8. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEQS91500787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0868a22d27d0955eef92478c8727aecf9b7a064cf28c77b08a013b1bba14f48b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DEQS91600618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267551d089da57048e26ebaec46ad7172254f534be46ba0d85959deec011bf9b. 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/DEQS91600620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5c94ca76ebf91369b09868cd89e3e8716113f69b8cdab2610dddbe65ffec81. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/DEQS91600617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c21a998f7b89d9cbf17fc30ed68ab5b006e8334d0de77e025b6a14beffd691. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEQS91600615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38392dd8b4f087ea396f6b09d632d4db6b7506a87e3dd44f2e26922b4726cdb3. 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/DEQS91600619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ca72a4ea0688d39c5deb9cac83cc0c4febd0d60eaab2cdf1ab94729a5bbc29. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DEQS91600613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2c61dd64de139196c50d55a1812be252ae96c7ccc3ecb0430e9b7aa8918db7. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/DEQS91600625.
Ewige Liebe (Ewigi Liebi) - Coverversion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad816cab1be57e497745aa9ede0ea6c15681223f7b70697019d5be1a378339. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/DEQS91600584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc5fed908b355c056034c3cc41a8233d2ae6b128c856e031e9a9f1c8b96df99. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEQS91800690.
SING MIT! Die große Kultschlager Party - Vol. 1
SING MIT! Die große Kultschlager Party (Vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440959bc8ec6f772745667678d91689e3c867be07fa0f7698e88065a4902b2ab. 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/DEQS91600575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be922fd4921e505d43958a5b7c197a43653608371dbf2ef2abdb918753e50ad. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/DELV42400697.
Auf geht‘s Madl (Zillertaler Hochzeitsmarsch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186231745b77bea75768dc903b59536d160e0da398fa8a708c2628a626e2fcae. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DELV42500817.
Playa Blanca (Duett mit Stimmen der Berge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48028a72f764265da238fd0bb9a7eb20d2c53dc02d3760b26d73aecf4511debd. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/DEQS91800471.