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 0xfc7d993ba14ae43756dbc744c874d59ca2d574d3d7897137634c04c9feeb20c9. 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/0eb50ad5-2321-40c4-be0b-9a9b8424d7b3.json and https://artists.proofprofile.net/proofs/artist/0eb50ad5-2321-40c4-be0b-9a9b8424d7b3.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 0x4d08de2356733515c21d6bad457d69feee9d8a2b4b38be1bb6878b72262d3236. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCJPN2191628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc81311d330f1766157f53704bee6484a21ec49444baa34cd395f3a19f973cb22. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPR2204776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22622f2ee48f74d3aa6b7b3ed37f3243437ed33c2ff117a22b523f8db5060476. 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/TCJPR2204770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c8f9d8874319d50f29dd5d12ea72dd36c90f65d4b8b61bcad6bc0f06673ddc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCJPR2204772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528de67295d6b0d7f2f727001b012b474cd5be6b9b5bae8b7cde031c7c5c77e0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:04:56Z), 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/TCJPU2391571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceb5379ddf050a7c038a1984a0ee202ecb9ae87866f66c96d99d83c0e27dc06. 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/TCJPX2380194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1b55002dc874c21d1d2eab19fd5389fb97e84f13ccef2d7fdf8ee8ebc1f771. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPC2487622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a434fbc9e5d81c9f5a485d5dde38cae9cbb4e94aaabaf371061145f4f86e09. 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/TCJPC2487623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c9c1f35bbfd1df1b1bffa0373453b723918c1e266f2c0d56d924b878887484. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:26:43Z), 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/TCJPE2563698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1145397a6e47c9ada4a8933ba0f5803f40a6d048842c4442a4b16c15379ed8. 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/TCJPE2563770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9188618000f2847d577c6e6b7d7d3eaa3c3235202c8d2eb300a4607956d03dc3. 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/TCJPE2563798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f32d864773529b691b9f01abda5e76e2674fa18eb2ab9320a1a5a66002475ca. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:39:08Z), 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/TCJPE2563672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d523e9875d81038e52f8537895a6c84d77cfb3e4a286275db4a6913d083a692. 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/TCJPE2563676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f52a49a9ca27978f294d7031e42c91c8001de5ddb3eaf2fd5f6256d91e1e84. 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/TCJPE2563681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c9c1f35bbfd1df1b1bffa0373453b723918c1e266f2c0d56d924b878887484. 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/TCJPE2563698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1145397a6e47c9ada4a8933ba0f5803f40a6d048842c4442a4b16c15379ed8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPE2563770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8924f6bda046d8f21f86971e0371fe2a06faf53281a839d12410d900fc9f7ebd. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCJPE2563832.