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 0xa742e98d9bd0e88fffbc480cdb7dc603e14395030d56468780c38f05fbf43e70. 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/378ca10a-eed3-4cf1-bc84-85261a3e5e19.json and https://artists.proofprofile.net/proofs/artist/378ca10a-eed3-4cf1-bc84-85261a3e5e19.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 0xc4f46ef187d296d9cc3f5be7f148d23f190b01a8f48012c2f1e2c6a0f2991cbd. 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/BCINB2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f46ef187d296d9cc3f5be7f148d23f190b01a8f48012c2f1e2c6a0f2991cbd. 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/BCINB2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae7f1b24974fe55e58bfc811007396cfc84e1aae1dfd5cdaa5a93917f0cb69f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BCINB2300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd883d292f3012f92dac11745a9c85af86cb97a30f31c133207eb4ea1dd2d564. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:57:00Z), 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/BCINB2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70e6da088afb06ad2e44857c6ff3dd3742e297c7402e3c242875d6d067a07b7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BCINB2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f9a6be3a4d2c780a2c2ef77a189f18e09dc453adf9fbcea552409961665497. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BCINB2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec9309e5313e9fe91674076bc8656c78c9fd99d95821d21b0aeba69bfd84aac. 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/BCINB2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a1497c8b706bc8e9fe37c665977f5744bef1d313fb9a69c18127f69a6a3668. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BCINB2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fde78cc4c74e0eba5abf4f4015e671247e943df0c20ecb1a4d167707434306. 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/BKELR2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a6e9d8d5dd18e2cdb4469004b413e19c0700fa26f4c6fb2469883b5845b3fe. 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/BCINB2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028532ea4686a3470e487afa75bdefda5082578c475cc6ab6f13dd9ae167e8d2. 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/BK1P72400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502fc5c5e89d0f57179256b56ab68db79b236f8b9b60901c86f63f065535edb8. 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/BK1P72400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e577b18f255bc42ad9e872117d6e89a9fadec4db42e7d351bdad4896c7ab901. 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/QZNJW2456813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5843657167890efd91e4140dc4c57396f32def44a6e3504f1edcef587dd07d. 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/QZTPX2395973.