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 0x2d8cf1cf3a75f93eed7bcbf90d92bbf9a851593ea073ce33d802331631ab00e8. 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/38d2e452-e4ba-49f6-8aac-b885eeed6c35.json and https://artists.proofprofile.net/proofs/artist/38d2e452-e4ba-49f6-8aac-b885eeed6c35.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 0xcf8aee21b6a4f64e9ee865e740e25d13c945612ff07739bfe77bcda8f8dce174. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SGUM72200676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa88dafc81d52d86d7d4eb08a31d0d15345ec57b94bb8554f8fb254a3e7e3a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SGUM72100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb619815e0ab3ef41a8c8ac2064df0f1b9f87a18a4cf41941e25b6335b371fab. 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/SGUM72200769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd174dfc418d3a90eb9d296c885fb8dbc566c33f8916e38a8e29c004e4965333. 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/SGUM72100786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729c8c70a337360133b7d80cf0924e1ca61fd3f31c6304a732672c72cc3205c1. 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/SGUM72200058.
RHCF - Bandwagon Sessions x EBX Live! version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045f7b3f6e81db832fec4444b335f8a44d1e1f64d99be0804e0fbe416330d777. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX762078398.
No Stress - Bandwagon Sessions x EBX Live! version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc5b4816792ff3957176ff10b34caa78c464bae9f224fd494f9f50519f171c1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX762078399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ae4227250bf0a5db7cdd0b63100743227c401f3752f705fc17376cd7e21d03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA092356083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd7d3e9553493dd725d14c49b48bb15f59646b1cd5113929a0a20b622bd7bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA062317067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aaad937d548141b4369a0868e5659503a52e38bfc1e2cf069b6f5e89f4afcfc. 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/SGUM72201140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729c8c70a337360133b7d80cf0924e1ca61fd3f31c6304a732672c72cc3205c1. 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/SGUM72200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd174dfc418d3a90eb9d296c885fb8dbc566c33f8916e38a8e29c004e4965333. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/SGUM72100786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7345216c559cc91a78cb783e3014fde3f6218f93a1077eaaa9bb7974901825e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SGUM72100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa88dafc81d52d86d7d4eb08a31d0d15345ec57b94bb8554f8fb254a3e7e3a. 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/SGUM72100202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b56cc6cde92ac6c1ff857fd5745913f7b5b7ab858fc675bec0604b038879b40. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SGUM72000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ec63297ea72f0317fb8a8d3c1b3db39b3b464b866eb575941ec0bb9bec03d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S2025953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922e8aa0775ca1cc9bbbf0176134534491b7ccce8b0020c1a9c59759b083ae37. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FR59R1965879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf618d3edc5dacc88d38b4d8204ce249fc7639cc3342d20df05374ebb8f2b7a83. 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/FR96X1808085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc16b8ee31e3dfd23b7971b4cee3130e9c8d5d6175758d4d7e97f129fa36a8e. 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/FR96X1976001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c2f87dbde91797735b5a7f43e9e6412ec1f89edc0deb933104c878cc4aa24a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USDY41769714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922e8aa0775ca1cc9bbbf0176134534491b7ccce8b0020c1a9c59759b083ae37. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1965879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf618d3edc5dacc88d38b4d8204ce249fc7639cc3342d20df05374ebb8f2b7a83. 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/FR96X1808085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c2f87dbde91797735b5a7f43e9e6412ec1f89edc0deb933104c878cc4aa24a. 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/USDY41769714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccf77531ae22e35f06414a4c5812f1a5d4d3e3678822856aad076e4460bc35e. 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/FR2X42478649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef19fc69fcf92a0117054daa458a1ac00f53f4a2d46aca0b34a7fb3d5230641. 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/FRX452403257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0339e451cb9c774a610d7f106c6a45798104b01905fa64e982e59d6c28688e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM4TX2444542.