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 0x4c14597fe3e19eb8fa3eadc7bc7136d56c241c2dc3c5c246627a6dca7ab676ee. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cdede3b-523c-47cb-8ca8-f84c6d9e1889.json and https://artists.proofprofile.net/proofs/artist/1cdede3b-523c-47cb-8ca8-f84c6d9e1889.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 0xe580ada02c2d64f188b0d2eea2cb62b2a3b75201ea2e711c1f3452ec25a49eb4. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/TCAEE1981820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383001a522868c667bd104fd21af0674c51c9b55c5c49b0d11bd4d98997449e9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAFW2156752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0517d1c44ce9f0feb0d1d49667cb099e176de0c23c9cf0838451a55f5b9d3d35. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAFW2156758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aff5321ff6dcf308821d98204af9ec84a6350b97a34068b5a69a5be22316c7. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCAFW2156763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bfcd7111167fd9ccf6af71c6f095b8ff9760c59232cb934c0060eaad5b9fc5. 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/TCAFW2156767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287ca29ba5ddf4e332a7d9f743c29b9d34ca01cb8e29b431fbaa9e94ee10eab4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAHW2471810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63d61b14455f37f560a2b08a918d870298ebb1e745898d647f618b28f89cbed. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAIB2400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc984f6fe0c8aa14b5c690c94e0b4948ab84b29f6a1914f0c23a47ff2a9c9b8d. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:16:26Z), 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/TCAIG2480326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1da4dbe73a96c1cf1611af04f598511d933a0e9603fb80d055683d5b6bcb33. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAHS2337166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a2ed9b0c87588d9f615faee5e7d34003cf58902281cea848faa4a8ae8ee44. 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/TCAJH2508098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244a2ed9b0c87588d9f615faee5e7d34003cf58902281cea848faa4a8ae8ee44. 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/TCAJH2508098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a1bc9c48c3e48b4f9d8dfe24857080a30c3fa3cced0d4ac8ee5f1206fe71df. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:10:33Z), 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/FRX282506394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf26efd5ff726089637268b8d949464492086a7cbecfd4c050ec8fb5a798854. 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/FRX452507674.
Black & Blue (Feat. Monochromatic Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeff03719c8c04395000847a5857343fd44188d0672b841c84db044d86f25fda. 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/GBPVV2305166.