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 0xd159cc0e9378a84380517b9b98fe4404118f5392c7fe293a8ed0e013acd9ffb4. 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/97e2d7f0-0157-4e84-9ba7-66714382763e.json and https://artists.proofprofile.net/proofs/artist/97e2d7f0-0157-4e84-9ba7-66714382763e.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 0x8941a9632ac02c2953b0d4a0e71017f0c29503c7723725f6860881301a3e6777. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835cf7209020e855b76d5e32c3b7339045506fe2e7d3cb367c96588ad963d225. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61421061c4a58fe0b08d59d062935cc6dc8ed312a29b7780efd4e6d49a9d93f3. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJH2558909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7122cfa46bd0d2fd56b7a0f975016ad62eebbd5fa9359153814bbd44b8d3e6ba. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ecb5c765a50c049213868ccce5fd610b7e17932290789a2f53ab0180f5f2cf2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caded2fe9fc346de31f5a031ea338b855984111a946058dcee621194a01a42c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAJH2558940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1488d5fb09fc1c91d60ddbdc262e96ce61305b44ad9ddd1cdd103a46e99322. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJH2558945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5d246dd671b3b30d971a1efe88effc6100c8b9d743dafa39cc811385299bde. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef327aacc7f41edb97c4ac268cca366d89722f55e575d2f6dec9b07e209f210a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAJH2558955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2235a426d27ee227173eb2c08db90c0c6fa9da2ebc8132516aa8a61b958eb5. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ecd05d418cf2272e7a641d896535992d0b9527e8df58373443f9f871d21eb4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec041b0cfac80452902447d6381ef1baabea9c67cf265fc1d789147c39bebd3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669dbb1663d63f92f66a969b0d81a9a5dc6330871bb16332f5b905da8882380a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAJH2558976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1f5694fb2c04f83ab343d0233f37a442c8eb39af3644ce2e18f25400b37b1f. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b2336abe9fb1fbf4c51e982675539a5e97efecd896e18142d9d701951ace6e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJI2558985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6a0f3f6acd0698d0df5fd9fdbfda1adc4ebfb6d57ef7a2b2d09c7655461698. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJH2558990.