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 0xabaf3ca48498415def009350222ae2012d29479213135a454b8f79c4505b3c0d. 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/5bcab469-70f5-429f-9427-f185738b4663.json and https://artists.proofprofile.net/proofs/artist/5bcab469-70f5-429f-9427-f185738b4663.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 0x565d78c4afb7212613d062ba154d2ef9e6498aa19c8b06c87193e090712e5f94. 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/DKA6U2300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699d2df966da693f8b2bdebf530809749bbc0c77a43ffa9b703027f0a79f9bed. 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/DKA6U2200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2a714476f0303f7365df9f0b9827827790f3313ea790fedaaa42693d5f85c4. 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/DKA6U2100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d9dc4c7abb2f79a9e468138720aeb4f72332614dc04552f99fefb9bf3d62ea. 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/DKA6U2100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa152dd1d06dfc026e320d3fbd289540e01925c8b83b7c3bd080cad6bd7510c06. 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/DKA6U2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992357510160928e7b225f54bcfd1a16ae8ed237e63b5bb2861bdd30c9efaec8. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/DKA6U2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f2744941fdee8141cddf78ad2a226ad38dfe84b4b766c02f710f2de5b7ef5f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DKA6U2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3c8b50904cfdc4d056cf56aa6828bef5f462d9e0739b3214cd83d7a46e3b01. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:43Z), 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/DKA6U2100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85f1188046c63b7a04871e53b8289f1bcf50aeeaf49579c374fd8d80fb1b956. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DKA6U2100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3809dbdf22e515b4e7a171252d9b44d44bb23d4b935fe4158efae03859004b58. 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/DKA6U2100304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0053183e09a48825cb1a4c9e41b43635d1cfceb9fe9cb8a74ab0ebf3d08df380. 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/DKA6U2300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8185fe1f72c04f4e9b60b5bf82b35f4e5f7d662df339ae659353b5c38d00a087. 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/DKA6U2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84aebba9d2ec238b213dff8424e22d209a5b025f71f9319a6939dd72ddb1034. 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/DKA6U2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84aebba9d2ec238b213dff8424e22d209a5b025f71f9319a6939dd72ddb1034. 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/DKA6U2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1419482569eaf5bc1c3349f7005c820f449d56828d455c543cacd3b04b5df5. 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/DKA6U2400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5603dc1117f60ce0a973d43b6a539ffd48d6c75ed10b6eab3cbcd52c153b33. 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/DKA6U2300501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3da97ac4e5077baa691c489c14597d15b761a5a55cc932cb01eff3889bb5220. 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/DKA6U2300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52496e43983abeea2e411d3dd4f156b49bcbb14f0574510dfd9f3468fbf4e07a. 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/DKA6U2200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ed334d8669955097522af965811bc51780325f38de8400016a74225ef64381. 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/DKA6U2100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f00a2ca43529f9e6fc6211c0023ac0f1bbe41f4b2f4ce4e124ec7b155c50526. 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/DKA6U2100403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85f1188046c63b7a04871e53b8289f1bcf50aeeaf49579c374fd8d80fb1b956. 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/DKA6U2100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1410191ec364eb2fbd2aa466a1494371ab00bf479ff18fd6d6c2ab0ae23f5e2e. 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/DKA6U2100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53694831d5f52d47d71e747067232125a3a0837cb4df079e68c5e5e0a230681c. 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/DKA6U2000201.