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 0x9d1f84d7a737bfbd9d85d2cad355a0d2ee8776b082d4c701a6a95915ad3dc262. 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/1c29f681-7977-416c-bc38-55923aad8cab.json and https://artists.proofprofile.net/proofs/artist/1c29f681-7977-416c-bc38-55923aad8cab.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 0x09483b010a44550616ffb3e7725a74f3a39481619d155ec381edfcf33a8204a8. 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/USHM21849221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c33cde746d39525b854ae2eafa9915f4e879635cb58c164468ba7815ced676b. 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/USHM21849222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d10af2372be7c6abc867da83f02ad5a8958c83924d18465382aa71489e6f5. 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/USHM21849223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7df3418227ab02244b08f4728dd009132aa3ff65f1f85df90341876427d7a6. 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/USHM21849224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec9ff61a9184b129e1282fe9929d0d55ae622c23d3136dd76090f84896b7b64. 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/USHM21849225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16110f110b304953ddc5fc94d631b1210e85716dcca13f9838bdbfa5f6dce36b. 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/USHM21849226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3162478cabd07e2b0d3e7347eed21bcb20a79407c899fa27b66f498dd2c8d9f. 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/USHM21849227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3c6ebf55f6febdcfe78c7330030bdcc10156f191b212b63ceb0259bb48182f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USHM21849228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140611dd4aca54d3e5db321dd294bdde1171bf4d5e72d08bd4ee06c0571220a6. 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/USHM21849229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba18ba24c7b5c458f17c8709be75f1132151ceb0cc2b9a508295e264ca03f6b6. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USHM21849230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97a4740585d4f589e679b43c1c13ee4526fe5e5fc2e99cdb1b7ffe9d6ebe803. 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/USHM21849231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988c2996f92cdd60406292fc2394f6bbc9a32351396036ec70980efc7611b9e2. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USHM21849232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671dcf39667d28f71b85caacbe0ad2c35d6d29a85f1f4fecdc6fb5dea1486219. 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/USHM21849233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919dd36f571d8b08b0a163d33bc6dcc22a8d907ee3e878c3a297782a92c964d5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NLRD51952051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90e10fd2ac180f74013ca58d49b53df90efeafd4c3f11cbc4c85b7e06f5fad3. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM82056857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6c68d93db039d5299ec1efac22bc91e1814567373b2ee04368ac7d33053e2c. 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/QZHZ32101865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7862006859d695d6d53da0f9e29adee8b0d7b16a6298b4c17eb1f09c430dc5. 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/QZNWW2111098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7ab45f43eee997e7640eed5b7237f574d97677666032228caa7c9663c2a8ab. 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/GBKPL2202447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d2e589db62d2edf2cafd1a1a544b7b83db36aba8cc20dcbf2c883b80cb373e. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBKPL2202448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f05e76c621779a9fb84457e45adfdc7764ba7ce271eeb9f84274fb1b411b16e. 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/GBKPL2202446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132a799ee79bf74467235048c87160133470dd7fce11aedd856278fbb7221c3. 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/QZTV32253143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092925264d0ba85ab6499cb87a80a4d69fa1a46feb23a6aaa0cd999661b98825. 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/GBLLT2334329.
Allez / Without Your Love (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fc32a1b20099106d69f97a089af3c9dd17a98362a0dec77617e41f21d1d83a. 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/US23A1586515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c2e10de9532aa6ad9ac88aa6744668dfe0885d0da8969d6d9a33e217940258. 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/US23A1588010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9721a004150fa95ac815c52cefc2300d934dfe8aa70cc9af94cff037cfe8ac. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1588011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182bcff6d454f5c6ae1c99952645f738b16cce484d3322c0b3c03203fc470f70. 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/US23A1588012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x825f829584e708c3e150eb4bb616dc788c63b2a2eb0eb6d66dce658ae7c23f0f. 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/US23A1588013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6c68d93db039d5299ec1efac22bc91e1814567373b2ee04368ac7d33053e2c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ32101865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0c49f83bc64711f06273ac84a0fae04f8d4c87a4745be5f21b6f4a4109f3f1. 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/US23A1582290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335772bbff77b04e2f7452d5e3aca3780df2f114f4a8d134b95522ee2a2153ca. 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/US23A1588014.
Hard Education (ft. Ruka of Ignis Brothers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c3fe0167f6dc9ba792b68851aa31da5c3a46ebdc69a045ac52963c789f7200. 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/US23A1588015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9b4de9c1ee03503f131b5abec429edf3360fddbba7158262cc1baed48ba128. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1588016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092925264d0ba85ab6499cb87a80a4d69fa1a46feb23a6aaa0cd999661b98825. 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/GBLLT2334329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e8cb8c766f13290af83eb00705e944c55ff524b84d72e616998b66ddaa9abe. 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/US23A1588017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7ab45f43eee997e7640eed5b7237f574d97677666032228caa7c9663c2a8ab. 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/GBKPL2202447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24fc32a1b20099106d69f97a089af3c9dd17a98362a0dec77617e41f21d1d83a. 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/US23A1586515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd6c923ab1fcb118dc4f6031ae686416b539d4d61b18fdc3f2db61ede2c2e29. 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/US23A1588018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e18366ee163d8b3176a55cac012195230bf86e87896b4f4478198aa857412c8. 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/US23A1588019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0c49f83bc64711f06273ac84a0fae04f8d4c87a4745be5f21b6f4a4109f3f1. 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/US23A1582290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d1f9e24c12d3276b56d842a988396b6906157733de9957cea038617ff33973. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US23A1593452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6399cdbafeb60d77e22b0b4f8afeb4fd51a0c260e9e231eff6c0234173ef015c. 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/QZDA62113448.