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 0xf1605766bc9574f448b3fef8c83b57ba7463c224ea741176768e57b090a0bdc6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0b5a3a36-9983-407c-8521-38c43fa7f9d3.json and https://artists.proofprofile.net/proofs/artist/0b5a3a36-9983-407c-8521-38c43fa7f9d3.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 0xf935eb184a9618866a35e33cb382a378963f107ef506b4432f0b1c7ac5921fe3. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QZNWV2058958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e641b46e597a056a0296f6e39174b91e45fef3fbd7b1e96fbbe1a0fadf1792. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWV2059002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e5624190b365c5ae3448fd5be60bb8ebe76bd8d60c2868a50016d315f2df24. 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/QZNWV2059004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x390dd818d4b1855832ae21ffef95ab78b0c40ef7c358e6a69bd346e877cee9c5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNWV2059005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5959fd956dea4a978e0b2587d53c8a0c541611d7de20b662989f593337f8c26. 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/QZNWV2059006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cefe06bcfa6b4d78a62a516dc3e60e4cec592f479ca00a0978a1dc01fe70bb. 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/QZNWV2059007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60340c1a59653eb6f9d43ac6b1a2a91a2a9130ac2a7af90ffc0928e1bab04df9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNWV2059009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b01f300425b4c4476254f0af74f22f55cfd798ca271770fe4598dcb9b0924e9. 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/QZNWV2056370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca2a1257540d55c05b47f48a03ff6e06e6fb7488d2955ae5ac1a9ff27cf9c06. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:00:38Z), 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/QZNWV2056372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c20c01f9c379d9611b5a6023d2ef4a1c6192be7bdc3f9a391b4b5ea10979b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZNWV2056373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a34d0883afeb402da9808f6648bc84ea7877848b459ef10a217b3caae9df87. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWV2056375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e4a1615447227c11207b752369ba2662e1a888174dec1bd1734d512da95427. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWV2056376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cde4e4912142d3ad143349f98a34ddda2e7f0d4c549edc301f08143e81f809. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:09Z), 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/QZNWV2056377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe13a9f8ea28c240a4586cf4d60774e8b55d72d613690f2fb394ef41363f6972. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ72258923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcffa4a7fe1bc10ebbc80a1ca54e04250ad4f469b55f65e6a99487ed713b5472. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYX2327001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f3052bbf9dc5be9966209ce718a8c812327442731a396bc3748f964eaa0d70. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYX2327002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd404c5e888a2c7beec0b662034c1f55d76a5874738e91f2312f6f2e3fe9dd23f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZFYX2327003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eeee19c40ab9e8c025f1e5c42469fb2aee4de4f72a1db08fe995ad01acf4a7. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFYX2327004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59f92ee8359e3b52f0c93d19d941381993b483fe5de7b76abb144066b52e34e. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZFYX2327005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27929b5bfdc0ee3d8db42b6140ed8207a5e1f9fbda23bea1f6348eaa94956a1f. 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/QZFYX2327006.