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 0x89c80ad823b3215514aaf0940b3f7d14614a392cd02b162eb4977c31841776fc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fec753cd-ab4e-46e0-9165-9369e9422741.json and https://artists.proofprofile.net/proofs/artist/fec753cd-ab4e-46e0-9165-9369e9422741.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 0xb2500d1b2fb37d2eaa9709475e2352e406a7a3ef0d3e3e4c4d6e8fe8a920739f. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZHNB1983859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b042ee93c13e908707b3a45bbf17baaf7d42834a2a9ea0615cc1c5f94668b24. 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/QZHNB1983860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5185aa8efd7207c6d43c261f58c7ab577bddc58110fc74a8077cc737d40bb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHNB1983862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c015ef4838479e96141f274568d4cabc4c2c0a22c19d85e0243285cc48aede9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:32:54Z), 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/QZHNB1983864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b75d6b971d2b796f2ed7079ead538be5ee6fff7d8d1fbfcb3e83623c41924f. 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/QZHNB1983865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c20182b66e5aa3c98a8b4e4929785c3ab0f69f9db0f75584327f637875d348. 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/QZHNB1983867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd011846ff2a3cfd5fbd6d902f7d5a7f3398a7ddab07cf89e00d1a56ceab77f74. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:27Z), 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/QZHNB1983868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635280311a03242c91de854013d4eed2684b6db3c1b97cc6a25d95014c5d07e7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:56:36Z), 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/QZHNB1983869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28c3a93f18ee33535c85017b8ca9288eda6f71bd35c65f00ac1b28722fdbffb. 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/QZHN52030470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd8740779732082b6f43be6256e81972abb886307c646a6371e9191bc154b75. 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/QZHN52030471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf5c3eec57d3c1333ea8472a68a89df1c1a3b6587bcf3290e3f38cc3f777bea. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:48:09Z), 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/QZHN52030473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877a57a2af998f9dc67feb290f4ca20cad67444a3518d2246735889bb459bd06. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN52030474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064455f4299d4661ae95aecd9401abc42f2e40316a78cac9324ab71b62b6b355. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHN52030475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4529e0346929154591f3f221acdc6a7731d60f730b743e47803182013c9a1e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWZ2035252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d6a1a62fd64e9b8f7f6bbbc3f9b3b68f2374b91ba23900a931fa68e80384f4. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZNWZ2035253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f282bb74d62c9cdc051d5b85f6c75c5b6c541f7565b7cf73085c09252a420a8. 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/QZNWZ2035255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fa721272dbeb1b58069155d9dba22a8810e56ef88b99735190496ce5dca900. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:38:37Z), 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/QZNWZ2035257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd13c790c158d8bb9a35d45cca238c9eee41e1a794180a285e64f7c1abd56ae25. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWZ2035258.
Why hello. It has been a while hasn't it?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5005f4f470e442938e169954d6e70ddbfafe9be1b0622ddaf28f3e1c4b707c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT3EY2497772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa736b90c21a77ec635938ad75a11722fc2f34d56466e15cb22cca6b9c94b1e56. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QT3EY2497773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f1a2d32e118d8ce38185dccd30874a232b2098d03eb3517f3c5f9416330146. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QT3EY2497774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4815107047cc3f5accf1a53ff3c4c76b55402824c6512d34c237864ddde8c6a. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT3EY2497775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1903446da8ecf23e5baa8acdc1d61047c13c3f68259f86a3f814b9e08f7e9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QT3EY2497776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6470d5dff38c6b166142ce23725a245b30e860b06025a2a9da320a6c8cb201da. 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/QT3EY2497778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6982e07875fd02f8f26388a76578f19785c41ff678594b7c19eae7110086d8e0. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QT3EY2497779.