1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x92e8193d91ccbb338507afc70acb39cd02a22b5dd43ca5d3a3a06596956f7ed7. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b63f095f-2271-4d49-a521-d7fe5de847d7.json and https://artists.proofprofile.net/proofs/artist/b63f095f-2271-4d49-a521-d7fe5de847d7.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 → block OTSBitcoinBlock must exist at that height 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 0xe41d131de41cc6685f9725c76312e216e3f22f339e893c9ef77f013bfe832440. 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/GX8UM2400198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8323dfab782df0b4ca38040fc0aebe9f0b82a41e17d4008f3dbd2e5c39ac3c. 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/GX8UM2400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91ae64f79d3beb6423a0a72d1038ded1d368b6906c14b44365b61201f14482ac. 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/GX8UM2400200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03636fc6e273185a515390dfe50a7c0fe3de4c54576721470e2a627e89343568. 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/GX8UM2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e85aad4190868a48ec90b2def1f62cf613f6fec8e32376a14af86a625765aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX8UM2400202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0ec765af2f540676a3f793779cd332ef401edc4abeee98dd1860f78c79acfc. 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/GX8UM2400203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a6138e3b25da92f5ec4e1161035bc396bbbee6a4f4bfd2c976a24d3afa0dd3. 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/GX8UM2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cafeb2112aae2028ed0f427368d3bae742257340a1f0ce73f57c1b56b75390b. 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/GX8UM2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df937b0204c15bc1d3aa25c550ea52408ed3b8e7d244dd17125af1393fead15. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX8UM2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9aacb942fe6524ddc2d1b8cd6e124913a0be26d847261548f1191e5bb939a2. 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/GX8UM2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0d890daa7ea0386c8487bb0f78d0f6d4faea283712e9527b45b8c2c901e879. 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/GX8UM2400208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107a0f2291010f6b8aed1045d72f23d290a7a1bac92a15c1577e614886544443. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX8UM2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e24bb9b6e77211a3988550cab4929597b8aed09028a5a4721e7535f62c9a91. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX8UM2400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bc07dff2a8278fb590f26a4238f51394125744277f66b9fdd82238165fa1cb. 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/GX8UM2400211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39180b96643ad9bc775ff52cd291af9057498f414cefd813ad0e42cff6b62af. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:52Z), 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/GX8UM2400216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa993f9984e58a0ffa2c4e66c08ff9131f5c4656f61490cff4607d899a8fcfe3f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GX8UM2400509.