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 0x8e53a55231b6badd72f924a841df0f96033c5a57394b007c984398a108bf4d50. 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/0837be1b-badf-43af-a7cb-c80fb5e37ed3.json and https://artists.proofprofile.net/proofs/artist/0837be1b-badf-43af-a7cb-c80fb5e37ed3.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 0x51746f9a7474e889b8a43dfb4e1599a1ac81b809e8465cb963c4e98d04408784. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/CH6541794576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf169c4959fecd964b1d7553ee75bc7237aa5729ae6c7e2c8ab872c2eebe2b88. 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/CH6541794575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87101744bc3d2fdb33cc386f1afda192fb5bfb52d1e1a006913b2f501daba234. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CH6541794554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eb628af5403e6ec72b7c4176e5b8e10bed834585d6fe79a20436a453a6865a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH6541794553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd628607bc5fbc23e9aa7cdd3749bf33d8b39361bc0e841bbe87b4173292f438f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:34Z), 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/CH6541794551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b31fd338161858216179884d2dc37676b64e0823d45b789af32dd21c385b4f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CH6541794550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c36493ba07e4e987dd96e5912603ebbebecbc721909bf3996b81c825572015e. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH6541794549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d20911c842ae6e62559188df17d8f3f0c3ee1ba8649ece41f97841794235732. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CH6541794547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129cec2eb9bd76094fdb7eb9a7ce5e01f4092283e6f6bf636d400e86a78ff680. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/CH6542239394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84085d5a99686dc820d21eb2f5136d17bbd136285e846ccda9c3668c306cc33. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/CH6542239396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b34ccb54c15d475cb8889075a7ea22891a1a4453c1562559e2f0b41bb23223. 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/CH6542239399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179c4fdfff7cb36030115fd562072e431c625742a70bcde29a488b9b115ef6ee. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/CH6542239401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa070d775db440d4e8faf14aff68dd41401a2e7fc2ff437452d4ec881ed56a352. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:14:50Z), 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/CH6542239403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b4b368da1d3f80f861c86094898a727fd7a63adc9df8f0367e608ac3e3b4bd. 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/CH6542239402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38e37d103dfcaeaff57680a4e8a61ffe993221e85224f8489fe641f02bba7b5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/CH6542239404.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08fece27efac17bf0cb0359fa873e2a8104e580e9ce9d74daf9a94f9df0b016. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH6542274882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d7a390569568292c1ce5371eae294c0bdd6971fc92f316b1e39079c77cbd37. 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/CH6542274887.