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 0xd2f43f8adf1187ca8141df984facadbef4504cf2fdfb7d6dbf155e32bdbcc683. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd524960-18fe-435f-af60-247378293113.json and https://artists.proofprofile.net/proofs/artist/bd524960-18fe-435f-af60-247378293113.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 0xc0bdab069f96f43f7964a2d9d094f4e6702b4874b0e159bcf8c2f9a0a0cfe616. 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/JPP631700252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2fbb279cc96785cc1c8300e07e1c62cf67602f4e107a2f9a8a8e4f807e4c95. 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/JPP631700253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a7cf6c331a25ce11bcd5ae92125cfb9130181b20a836f5bb7893839a3b789b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPP631700254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7735289ef0c9ebbe2b4dffd3a8ff9e182697babf1750a8fad2d78862234837bd. 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/JPP631700255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e42365c88af213ffb28b3178bdda3a75f876099312fb270356a46964d0098be. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPP631700257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fa67cb4cc95d31b7e01f9abb4d56f0745fcd76725267a8d67108b6dd05b6e0. 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/JPP631700258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d4c48716997ba1936cf935fa13ade85c3f870b571005d5e6421c451dbb9c3b. 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/JPP631700259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb945a54e43138d175581de9d620a2933ebf0d750bf8af1451a5197cf0aaaa8f0. 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/JPP631700260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8888ad9baf791c6647e03a582b4697dcf5443350c1a42807be41718fa43593e1. 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/JPZ921312079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c271aa0a506b946033e932d09f8a24f91f8a1ae64f73ac3266d0cf0158d7e7. 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/JPZ921312080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d55795c409484cc674c8727bffd1eb0357731961c87348ea75afc6f9fc4392. 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/JPZ921312084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d79308b5040f3ecabfe23571ba8dfade2cc64fee89b71dbbd72397c09f5a7f8. 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/JPZ921312086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429aa829295e790d5b6a2de9bc5ff37ef7914b7e9aa4e9525a43ed8fc3913e5a. 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/JPZ921312088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72aebe3cd0f625be42f34895fdd696a2995c59a55f0631acec3dcd400e069e5. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/DEAR10338776.