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 0x09034b15b47e7f64c5e1f2830692a48c247476659e39ad039b6af43fad64546b. 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/e35a0fe1-e06b-4fa7-a9bb-d014a2a45e4f.json and https://artists.proofprofile.net/proofs/artist/e35a0fe1-e06b-4fa7-a9bb-d014a2a45e4f.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 0xb16338e69fe7b3c10a2fd7790d4ca1b9ee514c91304277827a1468760acff7e4. 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/BXBK62300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f6aefd8d07f90c631925939d045e750729b4f96a72e630fb6b14803a6f3661. 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/NLZ542302115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50aa539254d1a29be6f75635fcc0b0fb82e69088509bb34a95d9671382291e13. 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/BXBK62300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197c15e4281e8ffa99e83770f5f83a145bfcc3196f62046dcda80b24edf2a51d. 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/BCCNG2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e1b2e728b1f5e2daba27159ab211779ae468ec0e84d1a99efe5e4c085b6c11. 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/NLF712400339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f1c7126079a32e61b5214b84aa23d65216cfe451a07b2648c448e85264ffb6. 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/BXBK62400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb511e0b17bb76ab7b12861d31f636ebcf435fb8f822d2a0b3f633ce03880a396. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BXBK62300040.
Fading Memories / Close Your Eyes / Your Body
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe404ea4261ffa9563542cb942950f3c281c49e53d1fdd864c849e31b1e7a5050. 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/ITFGO2300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd26b078b67cf53cb7847c552f2be25ff14b34540f62dc8ba17bb74e41f61e. 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/ITFGO2300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046267a890811f2793dd6fd28c37352f3b4f5fdcb9278cbb3b46abc679b6124. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:13:14Z), 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/ITFGO2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98a1f350a2946ff9099e6c6c51d04552b15339861de34cd1a3c03528cefb9e2. 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/BXBK62300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd1d9b06db797792e0922828afb014708330e278d278ed4f933f0b76ec2a6f3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXBK62300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16338e69fe7b3c10a2fd7790d4ca1b9ee514c91304277827a1468760acff7e4. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/BXBK62300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd1d9b06db797792e0922828afb014708330e278d278ed4f933f0b76ec2a6f3. 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/BXBK62300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f97aceec18cd139964ed3dd3df9a5678a2aa49f8dd31efd8d4ef4b32127f4d. 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/BXBK62400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfd26b078b67cf53cb7847c552f2be25ff14b34540f62dc8ba17bb74e41f61e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITFGO2300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea789912dc073f2f94daaa6f1d9409243e26951d74ea189df20cd36325175ba2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX452425237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f1c7126079a32e61b5214b84aa23d65216cfe451a07b2648c448e85264ffb6. 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/BXBK62400001.