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 0x1f4a58b3f9327166b9678649dc7a55d1eb9d06058dcaaa73d4d38e8b76affd7c. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aab80dbd-211a-49ce-8eee-cfb3dba222cc.json and https://artists.proofprofile.net/proofs/artist/aab80dbd-211a-49ce-8eee-cfb3dba222cc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tiroler Abend auf der Steirischen Harmonika
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 0xce75c90a788845b2718761bd9e2df864bf2f383b3a0ff94fd57492527e8a4621. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ATE501602801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73eaf10bcde601288ee314c35092647d58e8d01fff553c28299602618c9d26d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ATE501602802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3c8d657058c0600d3e55277a1e8baf1219284ed4b44ab18714409cd5f38502. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ATE501602803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce939d46ed52643e2583461c7f73c83e4b4a59f4cd1fb25bc479bfa49e638bd. 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/ATE501602804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa344f200b70026cc4fdad9dd6026d82dd17e0bac680fdf7c68a1a1f985949ca. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATE501602805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b636cd0bcf3b760bccc93b8eea4adbfedd39c0b035a016dbf4089952cc82a8. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/ATE501602806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cba89a81e88822c3d96aa2fcb6083675dbbf89107687881b8978a3716e8911. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ATE501602807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501cefafe6075c3c57e196b522604bd243f93e88909050c0b77e767ebc0c1e5a. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:29:43Z), 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/ATE501602808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff43b7388dcdfabbe0d66cfc875c13876224a2fce87d5219eca0605bf93f88d. 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/ATE501602809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78aeb4e8c48a4282a6fedfc9091c88569ecb65450f9e4f5fb1ce934bf2575137. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ATE501602810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef4c944073d20dda4f26f83d9debf726b1b2f7be8853b42018933ece0b7a61c. 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/ATE501602811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce74d969df37d3985b0dc36f634e5b8540e26735b7fda9687d768973c6852f12. 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/ATE501602812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc62e1051ca677c293dce6c636bb965ef5fbd130f2f2c6eaa5cff374d29a74fb. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ATE501602813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc21723f33ccdfc56b3805fa7e5a5427f9df6ae339a8a1d98853fd8691ea4692e. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/ATE501602814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5805051270d96a47651b825d69e5c7ba914bdc2df04318933113d57e75ac597. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ATE501602815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70d21a0a24b82d9d69e3354aea454934c995f8ed85edb1d56a55013a100a13f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ATE501602816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00688333dc97423b8cc8a6cf56a8fc43782de39193b4e868231a6fca3991f1a. 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/ATE501602817.