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 0x6980f46b89c821fd50707b61b40dcf4620c03089a28e38aa8677baaf91f4507f. 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/cec5e666-4324-4af9-b924-696ef9e7dd7b.json and https://artists.proofprofile.net/proofs/artist/cec5e666-4324-4af9-b924-696ef9e7dd7b.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 0x9f8a251065692a996c0d85c5dcf8f611d9a01f1f1607041e09c7fae0f7302415. 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/FR26V1558695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb91bc8b23f70c29558a2e933f2f05071150838c21a8107e7f1912bf118ed807d. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR26V1558699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce4cb1a9f4b85446255970cf6bd6d82ffb4dc88b303cbc1cc6268a6b10a6a10. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:18:04Z), 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/FR26V1558700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaba15d67056896a19e6bf898ece77de4651df2a4832c09edf1cd8a16f9f5002. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/FR26V1558701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503f11909d43328358821e1983716ce344de092843364a1507de5041d1bb041b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:37Z), 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/DEQ121754052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5788eafbf5364a79b98f87ef54c30245d0b5e2546e1156e9d489e82ab6c53cbf. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:49Z), 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/DEQ121754055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044ae558bea7b0ee27a8745c5ed010aec4b250e29bdef72b2c5b8793b58311de. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEQ121754057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf651791ab829aea1b7c1a4aa836df42e59fab8e634014d13c06e9130999913. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:26:15Z), 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/DEQ121754058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17bde1d4fca0946b564a5781fca7c7fd0762c1ebda08804eebf0ecb1bf972b4. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEQ121754059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a3321e00cc91dfd14e9712a642d2599924ad4dbbe6c73bd6acfe74e827d4c2. 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/DEQ121754060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb44a3315c22063d9bbfa839845c532dafbb758ac1f9180c0ddc110aa6212aa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DEQ121754062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b2ccc51deca2fbc7dc33c4289e905fe6fa106674c09f162bcbc2485cc4c38f. 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/DEQ021808620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283711ec2252a61644a8ba4be7e2bd2360b0e850e7880f1d148082300f4d3559. 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/DEQ021808621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f70ba6e34cda8193fe96c1ad1afa73a186a3b16f26ae66388d7b44ed98ce5d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQ021808623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8149a099d38593dc2b563a24b339deff014c3b0d7b1a3aeffa6bded1ceed76. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ022007300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1163dcf3f9e099c87242a7835a3952a8700c6d42cb32e2599451d7f39ca697a0. 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/DEQ022007301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1221ff3aad0cae7c5b054a5673b28fbbd94a332ae61c316b5308f8bceb5547. 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/DEQ022007302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128409a158d14c566539608624ae8f1ac1a80db1b31df773351d24e6434de74d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ022007303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd90b6db08421d91091f332d6ef660b2a2c3339e8d9e1681aaa1318cc5654e86. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQ022007304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7324677a6fba34c6334c18eaae75f07ff301182bc5c83800c77fa92db77d7d9c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ022007222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5fc032664a76c950e5b60b00ed678be6045d872d0e0ef50d5eff19018a7808. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ022007305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de970439d9ef8a655e4ff1ad08d55490286b76fe12ee63843a1ab8fb33dd301. 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/DEQ022007306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f3e584aebeae3f1765ea041840ff11009942f68eca412ed91ed112eb146ad3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEQ022007307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464c781e8214fd38d1b28f1bf6ba7fe914b2daf216d007fa224eb16fa0b74a87. 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/DEQ022007308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1fe6f5e764525351a531c24ee1e4d3da201a72736943bc4b1a99488abacece. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEQ022108576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e0298dbb1b11de902b41a42b0bdf409bff2e727438d61e12fba0e198d26f7. 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/DEQ022150420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88a21e4ae2eebe40e6a4047e85b118dddb51b27599f4e473be8797e3d2790c9. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEQ022113172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a8f94ac11dfca760e1e78f1fab06edf2a12044dc0ea8ca97c0d2b434972fcd. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DEQ022110361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65c1bbb1cb5d9c4e8a546c93702e1adc2d48e493618f22c28f1f20ac90e13e6. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/DEQ022150421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a597c18d5638343be638584dc65b52bb4f89be69ebabdda1401fb5e185e7d7f. 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/DEQ022115141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8962f92546b7ff6c0b6b69a64c2427bf7ccc565404b4765aad89401477479c1. 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/DEQ022150422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a25ab2eb9e4d5a35cc82cf63237d24922f040e4f3fea688ec333983e441ae4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQ022390746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bf84a2a68752d32f7689b7ec095bed4221496cac787211e32dfa1379c48d71. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:28:22Z), 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/DGA072371442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b35b9ffff5cac6748a4da41a0be7a9ae08823984980873e6bdb88ae28b2044a. 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/DGA082374766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af576563281e9dd43e50898eaf664afdc1011b2c4354ccafc4f2a78a3a3cc6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DGA092313591.
Das Problem, dass immer irgendwas passiert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf53e3a3d62e3009b471e14b0f48e29f0fb310bd66d27fe1e4f68542af26d4e5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/DEQ022383279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a5fd3e87b70102eb9d5053459cf0305f5965f87aec3f25cbc41554954bc51e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA092313592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8be026725547a6d1b7754d291d3d32d489487b6205bb8d3e59e751d7ed4d2ba. 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/DGA092313594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe57d5ae648affbf4efd81fd9d6e99cd50a6aadae6a559774c20839be3d98143. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:19:09Z), 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/DGA092313595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa637087ed8c48f52ae40e6982cd1b754297cd8e144eac21c663a3c8b051f2e4a. 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/FR26V2076902.