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 0x799b6409b8e7c8634234e0f61506ddb1cdb30324e4fbafd32a41c308fa09356c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12dc9654-6264-428a-a6e1-593425d4d418.json and https://artists.proofprofile.net/proofs/artist/12dc9654-6264-428a-a6e1-593425d4d418.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 0x4e061f122c08959a251bf8b90b7b8c73b9b00a71fcf514cc113d352663e75bc6. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/FR59R2253032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1e6bca29b3d78e2131552743c450d90f52d4524206dbb3f1af4c53cc71aec0. 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/QM4TX2342388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3f5e08e6cb10d226fb982e0eb465980a6fdb4a8e59e81e132bf748fd753580. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QMFMF2345849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec2cbbd8347389ce0f1ec421e2056628a241542b485766a439c4c0d8ea08fd0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QMFMF2345850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbaaeb9872144e8f0e3afa5031c84391ae8f0fa0f1f62599aa724f140658f6ef. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QMFMF2345851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a304cfed738206e4195f332664cf6e9403f883c9a2babcfe37ebc35f2cecfc. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:01:44Z), 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/QMFMF2345852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc16cc5d56e21119c5fe2a1bf20ad7a06b1e5eababc76638d3e90e5b7be7ab9e. 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/QMFMF2345853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e2766e612126a48b53a40912e452db82fbf4492ab6c267950874ab9a53aa90. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:42Z), 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/QMFMF2345854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc033f95a00ba22bea47030dcfaad716ef6e987227ded986cc69f46142d4e6f19. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMFMF2345855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb536b50873112f9e0d8ca2f92e74888fddc91d1025092793c0e6e8ce51540567. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM7282303332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc520d8fdc4fa9586f7f17a6f6a440cd067782054ebf34c9e16b34f9a65b79b75. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QMFMF2345856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7748a9ab0db49b3e983a025c1249ccf385d0a5f5beb6fcc74a37cb694a7f942. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM4TX2400439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7248b5e4da78bf2b1781105fc5306b8cfdda5258ab07d3b9c547b63a0f26cc1b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM4TX2484678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb474b1d1cabf41fe2d214d9833227c06523467e7dd1ae82f5560d353f996a6e1. 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/QM4TX2484679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5b2acf54f593ad73fb41ab442114c7689e2f952634c78e1adbe5224c49ae71. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QM6MZ2421366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf804ed4b9b19ad0b3e6572b0fe2cb1b2781e7d113c66cf5c8300c39ee33e44c. 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/QM6MZ2421364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd600b9b4c8906f9e30a1fb8bb219a18fa5d76cf6a7b64f29ce0b576e6f780c. 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/QM6MZ2421365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2312f4ec405e8b799000f8bd8e29b3c9976af7c67810164a2d32fb073fa5cd38. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QM6P42434098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c6e29a7fabeb7a0563e0471d4f51ebd1035097f659176debf76387bf06a5d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMDA62494945.