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 0x53df812ba9d7e6fd3b54ecce6ef8dad9e9ab7b162dcffaac399a74c1fc8e0792. 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/9bb9c51b-373b-4fc2-b6c4-e5479cfdb2f3.json and https://artists.proofprofile.net/proofs/artist/9bb9c51b-373b-4fc2-b6c4-e5479cfdb2f3.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 0xe26dd0fbdb2147ca648688d50f031e9fe66e03f89779c8731437881d21a9d153. 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/SEWFK1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e44f97f4a32e7b24c59044c6c4bb2b0f6b133ccd570fb1f0c79961ff9445fbd. 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/SEWFK1900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a7a26ae797f14b4385551ed12b8260d5d2da8c2df97fc5bc3c6e02f0fc75b0. 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/SEWFK1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29fb611489d2d09fcbffccfd82402bcb01d42410d126f9cdbd9f92b75073be9. 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/SEWFK1900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a3c76433cd2b78e97f4786b964821c13ed84a7dd3e6ceaf9f38e6e781420f1. 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/SEWFK1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c298aac015a8d4302753df862d38c3153e1a73784b8d522e3ca64c7d071a68. 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/SEWFK1900107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e8200fea9f240dfe365ba8c362cd19f2423164b7d5e912aec61d907a3396bf. 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/SEWFK1900108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196734c69cf68a16fa428c49b996a0535d8c6df161bfb69ad6927c749564bec0. 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/SEWFK1900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0713edab04a84a23b9c190549c3e6526217d42e13116332d51b1ce7b35b18d49. 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/SEWFK1700402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2666c37fdbc7ee9d4ae37547ca4588d787c54e884b2bf745cde8435b7b8d5749. 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/SEWFK1700403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6d2b5d50a2c88d46947fbbc8a9c6fd1a7474a0b6e89e35bc001079e2ca8673. 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/SEWFK1700404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72df765dc671351e50b98490ea92a9f9dcdde96ea18cd5336522d61fb594d718. 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/SEWFK1700405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8830aed9520e5ebe54aaa8e5ba0eb9f7fd04b9f5ee24007ebb27bff154037280. 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/SEWFK1700406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9408784dc2fbcc533411944fe66f42ebf259be6a628f9d01272a3c4b2f9a4b31. 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/SEWFK1700408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bfc38bc597f7bb73feac2b91c77a6bdb5bdd5b9f8af137977a978c9c0d1b2c. 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/SEWFK1700411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4271bbd4f1d888a9bff049576fd9b745458137f4ec976bd5e6f204ffe7cf9d83. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SEWFK2207001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9af442e378d95648c33df43665f4e4e1b8b365aa66da77283b8a72071a38115. 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/SEWFK2102101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a7a26ae797f14b4385551ed12b8260d5d2da8c2df97fc5bc3c6e02f0fc75b0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEWFK1900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26dd0fbdb2147ca648688d50f031e9fe66e03f89779c8731437881d21a9d153. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEWFK1900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddc51a7b220912232b6ec7520ef2d048e93fc8095cd947942f5abcfc5abff06. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE3BN1200607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21cd60226187adf3b181781b61592063f9b4ad1acb2a1bf9d9c4df67fd0337e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SEYXC1201401.