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 0x855510b34ba5319e84ceb6590c95c080b2d3ed5924da64369dedaf2b9cec8390. 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/8956c157-f5d7-4dcd-bcf2-980710ee0ba9.json and https://artists.proofprofile.net/proofs/artist/8956c157-f5d7-4dcd-bcf2-980710ee0ba9.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 0x19b245fd41050ad9b7ec8e55539517de525d2fb1dbead952e593f221b97c830c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA52208698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd303ce628adf77a76442f2022dd1c45977faec35ab333597b5f9710bdc1d22e0. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZDA52208709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3542029d67045b1caa0886ecac7ac55d347aa41ce56a547e94c503f7375ca38c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZDA52208719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd52024c465aa6f7ff99ca935ca4ce8e9d998ae78192d7400d6f5014560285a5. 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/QZDA52208723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01ff809ed2c6dd0ccdbd0776077acd33691d138a75ba24daf64e4ec2eb778fa. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZDA52208733.
Vanquish (From Darling in the Franxx) [feat. Pandora Journey]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ecc154d7dd10fa6cf7660649bb1e7b95a2e4b25a37e35835344f39df99ae40. 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/QZES52095213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce20d47c48da4258059d9cea094f88c62fb85a02480e5a84e42217d3c9325a13. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZNWQ2206608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e86d575f59bdb87f7dd0ff5dcb51db97a2eeb19fc7ac04137f8501727e339. 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/FRZPA2242850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7250cab07babaa6de3d9bed0a2e0e4b2c0a4d7b9e7f2a4785cc661a2c8308e19. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FRZPA2242860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc65d675cba003add4befdd981289adf4fd2400226cef1fd9ae543ab27a4057. 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/FRZPA2242880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f6efe8a24a2444f017e735706ddced3e278d48fed1eb2673de49a367f9240b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FRZPA2242930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ed0034212f8c340439045cef008366ef553034f29540e18c7bc48b537e22de. 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/FRZPA2242940.
Moonlight Sonata (Dark Orchestral Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ce2c7bb1ccc6e538b5e04a72fa35b7dfd772b628256efee5040071f0c5451c. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/FXR042307080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d91b26af32e539b9ff756b6a1f4ba627cc2a81f0fdfce0d085916142a9f7df9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FXR042307090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc01022f9fc99c3bb7d4e5623da0194a3703446ff29da37a7ddc97d139d3113. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FXR042307100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513a147d5b876fc0e5f07ab1a9e408ca821fc942485b9f9372ae2d4c788d868e. 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/FXR042307130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4641de4cc9ffde678e142671955ba8cce0d19c2ce0a0730b2146bd0b6e9efcaf. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/FXR042307140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7ea1ff17e7d33edb719f227f7ac0bed5ecaf95973c740f88fe9c72a9d8b412. 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/FXR042307150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419da790ba1fdf7290b49378f8e6bec39da2284fd8f5cea037a5a03e08042c9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/FXR042307170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa3fe339a4ded8eded5c824b868fc1de9415cf9d593cce370351461d80f0686. 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/QZES62419840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d614e3a8a2cdb274a00738e9cb4e15c0eb4521c9235e2f0d43fee09db550a5f. 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/FXR042409310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c377c4897d010df3e07c02bb9e58102de35035fc628d3b9ec129a193918415a. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FXR042409320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9fc2c9509bb16d4071d5619262f54fcab36c44f45f7e38eae0ee13999b2a44. 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/FXR042409330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf447ca88d08908ecfaa23bd8853731fc2444ca7d8a2f5e952dbfb5462c7b712. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/FXR042409350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a52f93c0f73506a8cc59097534a1d3d013e6b2efa75ff46ea6ef767b01db27d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FXR042409360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27e1986d5a2abb61c8c258d92efb90790c22e434e88bf4ec559ce9c2edb6e6f. 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/FXR042409380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1db52632c713dd3728f674e063d9f1e61fa6b146c08c5be91cf0e5d879ed8f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FXR042409390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb393d8be4738943f0cd8248cf659a5875a7c275861d6ef6cbb36801d3dfd6c. 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/QZDA62537400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef999f0c3a36975027dbb50874bee7f660c92edb673283c50840580205e430e6. 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/QZHN32509124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78337d8272c83128816c68449526fe42e8af03a5e611f6c937563a37cfa3b428. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZZ7M2505051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d462c5cea694334376ef226e6bf76ee2247ee41e43af811c4a5324af710530. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FRZPA2311220.
Powerful Instrumentals (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba3a13a5f6f6ce945c77deca27ec31b41a3d4f8d53eb583f2c1ec683e9de830. 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/QZRP42488523.