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 0xbca5015b98470ac10042888b66d322671074c4d1639b84e0d9954307b1afcdfd. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/313ae0a2-7f53-4275-86d0-561c14208352.json and https://artists.proofprofile.net/proofs/artist/313ae0a2-7f53-4275-86d0-561c14208352.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 0xaf53cbfb5ad8650d4e66d2f6c6df611244e8681a92c6bb473dd9dcc201aa3bfe. 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/JPU901500113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec5e7c1104fc8d572ac19db1972d27bc010069fa5c8ad179518c1b3efb12524. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPU901500429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fd1351f377cd7a60b319fa20b0cfa43d95c22a69552b262f1b73c098237d59. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPU901500430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3831d5f26da8c08c96b5f3c09775e55ccb8275c8130fdc3100c45e22324c5221. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:31:42Z), 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/JPU901700807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccab5ab5ccfd934e9e0310d00d31b96d4d9be2d6f3abc998ac9950a2663997e. 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/JPU901700808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d0e42556fc24135e1fa24eda936672fb7bcc4439d2244182aec23e9236909. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPU901700809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96f3e4ad30f6ec9c24894032d8004ef883af25cac45f7325b50d94840fae3f4. 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/JPU901702834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c12387f969a0194d088dd016116e03f984943bf6d390bcb4a39f600bf4b6324. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPU901702835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5a2901405f4765b903a226bbf4a2631adc3ece4e114a3f9f84c631715f94af. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPU902301954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2787cd10f1240d31e3ed8eca0bd00e52148b96c8b3df52909da7e025194e18. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/JPU902301955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc170b212d1fea2099ca49c2952d1e4ea2a20445768fb0fee29c7981100ff5112. 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/JPU902301956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fa93b9e5fc211ae4d3e98993ef2eddf253321e6ee0712777580a431ee3c73d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JPU902301957.