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 0x3176d29b555094e50feddbe4f5896f6dd75a6da88f6b0530945a9e7398fb6601. 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/1881db7a-188c-4b00-be14-9b6143138c78.json and https://artists.proofprofile.net/proofs/artist/1881db7a-188c-4b00-be14-9b6143138c78.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 0xb067c8b0adc07c57bd66f7037c23731f62e4218e2ace8017a492fadf12334d15. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/BCDR52100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc3e0dbcaf1782b4f5442dcc79d8c1610478eb736a1c4d53714242c04b7c253. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:13Z), 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/BC6A02100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8493f8614c671f6c2fefb433f4019ce1ff0e7d4d21d7e54bd5a0b8cb1ab193c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BC6A02200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80235544efbf056ca43b9f574143384b98fd5426b5dfd85ae5736cc0d30e061f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:35:24Z), 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/BC6A02200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9893dec8c5e2b2f9b405654fcf4ce7a99cfbbcb53400d77b94d3a8656706be77. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/BC6A02200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd4bbc411c1cf00eeb2cc8271c79c5dbd142ea5f3a2d66d5ea22352ea1c56b9. 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/BC6A02200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18e12d94938935c32e2aa462fc4c2dd56932514787b3841c1e2dec712815bab. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BC6A02300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f987f5e7828441e5ba0146bf839a8dbb210d417fc32e36242adbabad858e2f. 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/BC6A02300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2626b25b2f3c59fd19928531d11806a1fb9d2d821f6139c3c3c1f2c725a3f7b8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:29Z), 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/BC6A02300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1f8a7ed5fd47843697da5d0ebeeb674d483ba8a9f3e4c76d6daf11570b6c87. 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/BC6A02300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b2ae1c229793235ebdda4d0af8ef14ba56ba1764adf6e969859a431f83a94. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:17Z), 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/BC6A02400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57d91732408cc7a5667ec30b080e93bcf1fa57938f5e38b0093153ab7a050d8a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BC6A02300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1558a90047c1490a02d0806f5a9ecef0bd7c8954e79f70b076070163b25fa287. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/BC6A02300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c52e805fa9b704d94ecba3e915468f3f55b6d4ebcb1fb36cece9e24cfd8d315. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BC6A02400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed44d2e9e534f85a41a3ac91664e0337b24ef6c234b0f8a8b76efeb337b9c9a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BC6A02500013.