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 0x4c2d1a1c16c3bfb702439e0a15dedcde4abed2c553bef254396be4d854fb200e. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d163888-5abb-4b29-927b-3c9286a14ae4.json and https://artists.proofprofile.net/proofs/artist/0d163888-5abb-4b29-927b-3c9286a14ae4.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 0x16948aef7759ad2ad9b54fbf3bffced3fd1d65fa5031133d594a2c8b373acee7. 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/DEZN82529998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78a1c7c60baaab02a77490fafe2b167f7fc1d64470a1e635f0d728a10298160. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:32Z), 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/DEZN82529901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b97dc8ec66367475071e4d2d5a18f7d63bab6786234f1af242a1397b320e9d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:05Z), 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/DEZN82529985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0fbbca12f7b4deca42921264194e6bfc0ef8303eafcb3365bb3b5b1b843005. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:15:19Z), 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/DEZN82529810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8621acff345bd5a8fb4786a3a40ff7cce26b42b4483abca84c6b935cbb66471. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82529912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f887400ee4d7624e5bc47ba9a3fbc4b734d6847e57c0efaa7828e2ccf27996. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEZN82529873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620243a72dba4cb4fbb9e963b0df5c8ed870c3a3d24fa4f8f7c22b686fde06d5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82529885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b295416ab89c7cc680367e5315d23eaa6ce89fc8c1c9a4689dae6c43785f4d3. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/DEZN82529876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bb155c8a218a05a878c24bd17045ad2a3296a0f3c5bf5e391ebb04388d2073. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZN82529894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5585498eb7b36994d100a998bc970ba5e29e5fcf7585252d552648b37f2d4a8. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:28:33Z), 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/DEZN82529889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869dc9c9981280fd18f97965cc3131634f0c8f295b2d157cfd8187f28a3d3853. 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/DEZN82529909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9881495118a8f04ca93cb2beba59fc108b458bd270d81d5deb62e7c583a00d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82529969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65b660674f30a165a57bc2f99f394cdbb35060504725375ddd0401c901bdb6f. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:51:52Z), 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/DEZN82529952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e48edab98c22ca41bace641c64e2e403cd5e07e8c12dc9950511de86dbd159. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:49:48Z), 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/DEZN82529975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f14401e0151fcd7b035f113db3090974af313de6926047d769cd20d91e447e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZN82529966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd209ef4df98037cc42e32222c98eec24f30020b8236fd56b060bc261cb325cd. 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/DEZN82529900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2511d0f7fa3099ec68834921ca679933b5351fc812f5184921fb144af573eef9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:26Z), 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/DEZN82529991.