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 0x5aa8908bbc78958505c2ab5b94f9d24fdc432c71dd331089f8fb3019756938e1. 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/2dded799-eb55-4d57-bed9-6d39dcf16171.json and https://artists.proofprofile.net/proofs/artist/2dded799-eb55-4d57-bed9-6d39dcf16171.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 0xc7f9060be5b1d65a28b82a647dba519b9e58d1d1e613131f33615ba7638a231f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QM4DW1691257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f4e796265866ffa9f47c907205cd18fb4adef6caf9d1e92c05aedf22f770eb. 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/QM4DW1735800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d616d31aa105ffb309f1e3a4b638df96b728e42c7b65db0402142d95bdf3d0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QM4DW1784738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8c470fbd07dde436d9327df6d612bec6aab7b5ab38ccf208d44bed30abe538. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM4DW1784741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c98e5892eb63e6e98102d39467d7ce0f0207332532605c3da1218dcee6035f5. 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/QZHN61983294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c777c9fa5cf77d123a4c364b94a324d28aded4700ad856f7f6dcb93e72b3594. 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/QZFZ22099553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5666becdbb3e1d4593101e23d577720db1d335fc63210b12524218f085d89eb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ72034403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591cf611c41601f08379ac1f5a3345c377aa4e869605ec57511e2002eda11be1. 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/QZFZ72034406.
Victorious the Soundtrack: Instrumentals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829561574fe7d4f7223407409742f6ab515cd4a925a224505d10727a4e0cc4c0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6Q2062162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45713448ca0ab9cf38348bb55c7334ea4a2e5c55ca657a3804dbd8c4d385dfb4. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZK6Q2062166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d86f22c629a78f342bbc1d70dbf23c6d94103f53b6b24a6b14034ae28be97c. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZK6N2110453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9e360d95d6ee7e636e4d326e00904357ccbe415f3f4bdc3ec2e18e3824c756. 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/QZFZ72034407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829561574fe7d4f7223407409742f6ab515cd4a925a224505d10727a4e0cc4c0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6Q2062162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc6b38ecb5c57a1d78bebf1c6377c9cf3a8cf9dbcbf71d281c035b9cda00df0. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/QZPLS2109160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c3b988d9829b07c14ed3d1e45c7507ab8b5d7858f3659c4c822740a1a6feea. 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/QZNWQ2222051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0bcda62e84364aa5cc9eef3ee7ef6b1eb45a2d89a38c45580221f80c77c83f. 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/QZTB52297277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f7a1280458f871a137d2e32e69f385b61d1acef818b09c7ebd1d478eb4409. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZWFR2435139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca43064b3a4b662acacf2ac13f1afdbf7d06f874a2109233cb4ca7c4e3f029f5. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZMEQ2567780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05891c796e56b3dd0eabd73a7b1912b95e911e3c6a62a72408d0962bcd117580. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZTB22585301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96169eeaa9e096561429019c5be8e99eaccfaa97af62233f62c9fe67456c6aa0. 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/QZTB22581260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c7677fbc5e07b3199a34cc09c908bb2eb251b69a5b3b369b9ab1c631f9ca47. 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/QZZ772548736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d87e4bd87749e1dfa47c11e52a49d46ea556b3b0940e95f4e10607b25577db. 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/QT3F22534131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237d0447cb7a604149db7bcbd804fd2e2b7a6ae3548aa48e71cfda15d82444d1. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QT3F22534133.