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 0x705afe2f47571f590ef72f193dbe3ff201f8961ed8ca2df035d3c6b6d9161564. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/474578de-e809-49ab-a015-bb423d1fe5e4.json and https://artists.proofprofile.net/proofs/artist/474578de-e809-49ab-a015-bb423d1fe5e4.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 0x711503e27a846fff9885942f47c4ea7aaa87686208355188533b0002b97e5a25. 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/FRX762434881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4227ab63345cce99cb845ad2a5273612b8bf475f5ad27f5cf33523f77c2f6d97. 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/FRX282446603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9c0e030d90bff080e612f606660a722c71782fecbac59bcb07d52ca455d6eb. 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/QM3DF2289046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d12b63336758d94198e0ec04a268a33bc70a92d1ec6b8fb2a3ff41de1d271f3. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM3DF2289044.
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 0x213ca28a6294176b211a846eb107b62a7899ef5d111a1e5d10f57dec5254c390. 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/DEQ022283165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b45092d0df9823d3b9853e3057068128e6cedc332a02df8a0254283115c2d35. 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/DEQ022283166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c033dfcd5e17bf4ae3eec0ff709556c94043048b67fd48f9f7fc2882501593. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEQ022283161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1437ce93dc340731fad98ace7503df9e29613d4daba4e58fca3ae5f1f3bd9bd9. 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/DEQ022281518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1efefb8046b8648bf4041cd2b316b9cf0c7cd942c1bc1c52fac126fd909845. 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/DEQ022281526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded7b8a4bb62fcf18b3a4ff7552e5c10fcd61c90256dba2682c2d3feb10bcf08. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/DEQ022281516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689747655d371fa7b5c5dd643c5a3fe12720cc2bd7ad70d433061a7cc3369023. 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/DEQ022110477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff20166991cacbce293cb4fdb9fcbcf1dc59c75960de14387679bca7cdf44f5. 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/DEQ022110478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66277040910d243669760758134e7dfe0767c50bd368591708e9cefde7a68c41. 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/DEQ022110480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e5ce0020f7ae42996edcdd0f37930d632d2f03911866fde25b5012f35d0881. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DEQ022110472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ead4c30053df51b772dcb2063d189265bc4b971091ec40dd90612ba3620307. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEQ022110473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35350247aaeb979d093abc5d9c08ba3e6fc9dd61291103dafd39d31863e8753. 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/DEQ022110475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaf638b2ebd9cf6d9242419d981e68a6e49e8487a48fb69d55bd73b4d6244e8. 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/DEQ022110476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94605be3416d289264cc8cef14a0f8ba12d3708991f129c59483f44a28194a35. 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/DEQ022110484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d99c5cfc3bbe345ee6d545e38b538d6868a08d69e80bc4be8a4079d2ed6e73. 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/DEQZ31900612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d084bea7a49a9564c4b05c439d2b4f00addf901c21a7bbe70cc0e26220800dc. 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/DEQZ31900618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff02f6de97033d74ce5efdbe373142a623e55de621f9862a8067810a8508cb5f. 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/DEQZ31900619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a98e0abcfba783e75dcfcecea9b16fce9dabcff5b34ee79ba15f6ec32a2ef6e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEQZ31900609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64aaac5a0e2f78193ad058691fcf307890375430b72c30f524a97d4134e79b95. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEQZ31900610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5459d58d0ce89d9efea7efa7f653d5b29e5121a84008737d4577c8f0ff80f9c. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USL4R2497367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ea8df2b37fd5578971243d778670b4d8a6fbdf80b52a8b2efc694adb36a17c. 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/DEZC62334862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325d04c109eef25721a91f388d0c1b077a0e8e03b3e2031fac5ed97a406f4fac. 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/DEZC62332345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e08c8e582cab9debf4d73fa54c6a14a285169ab84794929ccc8f41c14a5aba1. 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/USANG2203538.
2 Gramm gegen den Stress (Remix Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf24f2772e38f91d679c18220046a9504e617ee14ff72079de82b33b2d5f487. 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/DGA0Q2394526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd040559fb42e11b6777248ee6ccfc60738b3f10d6ebd049b28108f34ebc432b. 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/DGA0Q2394535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc0f6ce4eea157b3b275b64e92f073e5fb97674655edacdb8ce15035d4b4217. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEQZ32100721.