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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104846f49dc0e9c06665820f7b133fabd53d89973b9eb337ffe0cbf13f77d64d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/296fb63b-a1bf-47c1-b91b-847075bdd31e.json and https://artists.proofprofile.net/proofs/artist/296fb63b-a1bf-47c1-b91b-847075bdd31e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x662e35e26dab0ac08de7b29bcb51bc16e713fcd9f4702afb223fb2c12adb1814. 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/QZMZ92361338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352b699321da9d83b99ace28f4d61ff9c290a1ebd2df640199c12ce5f6be2862. 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/BKBE02300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5843ee0a59ecbe637516e2cd3a939d4987229bce380e5acc2b113989fb9ef9ae. 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/QZNJX2314778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc0382da3340fe9127bae26931c97f6f5334b3faee35089836502c5b339970e. 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/BCKZZ2300363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65021f709ec3b9af7da9496f8f7f0905be717f50325272e9527c298e8836f8e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKBTD2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5ce51d96ae693dfb2a422c0c5ba76f7c1b5558478dd47b82ae5a12cbf7a1e0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKBTD2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254d45ce2405be4a655ffc6651efda4c37ebea9b9383da527b352254a3504c0a. 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/BKBTD2400010.
Automotivo Amar, Ma Ma Ma - Super Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e30f9bb8d6a3183a23e6956c54aad90bb82fb8878e630c5e273db1f0d6362b6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BKBTD2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb269f6f69af179334ce18214aa33595610b26272843492491fec96cc53a614. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/BKBTD2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ee35f1ac127df388a3d4a193e466ad9ff89e6ab6878cf263947d391116d7e. 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/BKBTD2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ae675e9e2ea49319aca9b5fdd740bffb67d041c6bd472709b6d5b208d6157e. 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/BKBE02400002.
Automotivo Xm, Taka Taka Taka Tá (Vigaz Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba8efda9689e4a7775661f7053cc2994cf60987c33117443e2263705e26e8e5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGLM2484321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef5c4fa54cea3ebe1b3f978e9c8c29efcf72f70745df3aff5d1a27e1d5ccc2f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKL9T2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6e77aa078a4e11656f6ef6dd10f05bd3b50330f8d64d31dc5ed97e7414ac19. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BKBTD2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68656c7c11fb98b0747c1635d7cd4607b7b6ff15e64b4a421d231ed05c8aab84. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BKBTD2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bb722fd902bcd1c40e7089476b645480a5284c90e7dd1814c6f6bc86d9bd8a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BKBTD2500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1dda0ace4df8f0e828e99c86facf4a13a38190ddb9f43f9639618f2063f7d9. 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/BKBTD2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb400a6787b0ea785e0d84c60a94a564658427a7ebba919138a64f5718bee119b. 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/BKBTD2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b8a0753f2c3295840f8e5afd40784b1a18e22b8c19afac37150d0ba821ade5. 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/BKBTD2400029.