1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa985785fa7a00ca73bb56960cd34c62d8bb2e5761b9c877294ade0ef4ef8def7. 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/47e81a96-add8-4473-bec7-5fc1b41ac2d2.json and https://artists.proofprofile.net/proofs/artist/47e81a96-add8-4473-bec7-5fc1b41ac2d2.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 → block OTSBitcoinBlock must exist at that height 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 0x03e82757135c0503b9ace0fef5df6b53f4dba467e10a0f6083d37d9160585555. 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/PLC060900425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa537e016ee5339377a1f237c59db8d178b5b6b4e3b254485d2f25bf7221b85. 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/PLC061302185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb9dbb2527565cf0088b0b62b966cf94cc451edcb994754e6edb3d88a90cb97. 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/PLC060800309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a81ec913b90c47be87b87a15de41b7a5d5eb4484a16abf9d1eb957cebe9d60. 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/PLC060800305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3f85f25c8069e5d98c6a3e04ffa4d420aa023e2f4dcd1c6c66ee59e9f6afbc. 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/PLC061201405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7fd8967312956d192f90765d6b98b8353c522c0e7f70a2580e2da8ba49002c. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/PLC061504357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6a2b8304c22b0ad988c4b1afedfa417fb1286a983b30d4418e789d6d58943d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC061504409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a18a93f9478b15a9e576beef439e8d841fd13560fd55a9243df34aa07bb126. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PLC061605086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebbfc930fb74a6ad560466799157474ed93ed2d2a7b5c280fa2b2f460d2fcd7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/PLC061806920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ddcc8e243a011ad22785e96471dd434915ac74da61f5309695c8341e1c4351. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/PLC061806792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698e78b648313b3b20733092c36e29c61c808db1a86a54745bb510ba0254b6bb. 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/PLC061806589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd184900038f4ffa662cab8bfae3920060f472d58ba19a6a4553a2ff825c3acf0. 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/PLC061907528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4267e141f84da9ecb0047812e6ca8eb8f0611f3b076d192c9aa07e204e2bde66. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:59:20Z), 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/PLC061908987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b99cbc1b39c63cf15300ffe060297f344cd3f1ae8d5cd1b85894becfcd661d. 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/PLC062115188.