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 0x6b5370d2e188098a6f2f1ab5de72c488b747fd31b19e0ad79122af4077a84ec2. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/375ff030-ce0f-47e7-bf96-6936b5051f1c.json and https://artists.proofprofile.net/proofs/artist/375ff030-ce0f-47e7-bf96-6936b5051f1c.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 0x79b85f310856c6af484d007c05038600992f74e5c2a0657a2752f1626ba083f1. 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/RUA1H1731863.
Музыка должна не играть, а хуярить (Artem Kenzo Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fd711f64089aa589774365ba0d0399c9900e528c906bf511a467196a5e805d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QM6MZ2184196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58469360467f04cc62eecae6c676c85333af4c56512ab4368198120bd51b879b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMFME2028522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a544354ed99ca059bc338283cd29a784d264932969f44ef5a4b3a1031194d2f. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QM6P42146308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e022f71d71fbfa2bff8774593030723299a7b1ff403c248ab0fb80b7af60209. 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/QMFME2163044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c2ad7a7ac967eaa59db4c83c8c6ce4ccaf3c356c550e889920c3796887eb1c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:50:44Z), 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/QMDA62169846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293124b30f99eff419623de6f12c57288965fdd39ef4d9bef40f7bfd974afa5e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2223640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd7b9728c4a8a36549c959a2db24e420f26f3aa2675823548a66b0b199fb324. 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/RUA1D2258169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dec299935fc647b3ef8747e29c694cb17b2ae92dc4034bb12eacaa79ba6c724. 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/QMFME2378313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfd34029cc6be5898bf209405a970b075ff43f38b010f53f084172806a1c18d. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/QMBZ92442340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb86e9c4cdd9013a6a90c7e6a8780199088184dc5c2cd07b165a7f5001cee196. 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/QMBZ92442341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbe206b6e125073515a3ecc1c653517f0541ddc84eb782e0740081d9db3b0c2. 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/QMBZ92442342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fe7882f41a10e261d4f174a54145d2f66bca137cd1aa1498eb52494cdd4995. 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/QMBZ92442343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd451c31f21b1c09b7832b21f152adfcfcbe00db07b1806e744ee2bb2b9cf8f1. 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/QMBZ92442344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5ec1cf0f36a6de0e6e131dfb9a646a6e4cb96c19414e73089f794e44c5fc37. 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/QMBZ92442346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5449871fd30d0b2e5405df67c6e1467e83db1fbf08965b4f2897b475dc00ff95. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QMBZ92442339.
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 0x2c7cd25f04ad32f200d21b2fb9d922e86211bc384f127cab2347dd29312b23cc. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QMBZ92442345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e1f4b6cc5e97212348b492588106ffc0a9eea9ff8a8937dffdc60c85f47a70. 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/QM4TX2557700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fbfe650cf2187ceb9d7d3df39060ffde9c2b48700e9384e9eb596fcd9c16ac. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QM6N22513600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33239abc01db81f631b1ae8d1bc521a37787ec99895c509dff23d876ff7dc6f3. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QM6N22513601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b91d980b3aa12052c3c1ca1e8803cf9a5ec1a37aac59295869688f8ff0b0af. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:38:40Z), 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/QM7282575094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd2237ce3d8866f70896f3816d1d8444e5cf26275830ad3991881c1d8d7fb37. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:25Z), 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/QMDA72553945.