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 0xc23110acdd1e26a6478916a607d309066a6017b0cafd9934eda7d4a978cbc07f. 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/bb69a19d-93e0-4ee0-a89d-312d146de9c6.json and https://artists.proofprofile.net/proofs/artist/bb69a19d-93e0-4ee0-a89d-312d146de9c6.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 0x82d6315e909f39d8d3b472e3153e8d704a53d80a49c87a0d97508cd01e432e26. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:44:51Z), 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/QZMER2328534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2b9bdb9809ccced6f21c8b60ab0d311c6935fa4a3c0ac85aeacf1255561a7b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFP2360473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9797f0ffffd7ddbc088c99bf85542f7f62b9dc5ef626e3dc833abfdfddd870. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:37:04Z), 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/QZWFP2360476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d336408af191dc09d8d7cfb5831b1fad3fb611416f055e9564193c783a3763. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZWFP2360479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2b9bdb9809ccced6f21c8b60ab0d311c6935fa4a3c0ac85aeacf1255561a7b. 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/QZWFP2360473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9797f0ffffd7ddbc088c99bf85542f7f62b9dc5ef626e3dc833abfdfddd870. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZWFP2360476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ffe01006a56c942ccc343416fa404511bc38a4a949c3be97e55bebe415c6e3. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:21:10Z), 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/QZWFP2360477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e883ad5d3d3e921312e02062006985ae8f3c1ee7780034416adc5ca656db94. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZWFP2360481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34aa949838843f7dbcf2b09f433c3387a5e984c75ca3a6c6667b2e8895c36ed. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T05:06:05Z), 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/QZWFP2360482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1b5b48b823456a1726c1b4c5505360854af0158da56c2783aee780a7ba6b53. 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/USA2P2462636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131074e44e3d3802b093905608adbb2724e5871834c4dac6e095628fb73aece9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA2P2462635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3f65b0aaf0ed5320c5d7e88ea67c1de20c25dd4fef1ee71f79dcd49e4b70ca. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:49:45Z), 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/USA2P2462642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ca4684078508e1a4f3c561d4253358c48d04d6293742e8bf961433094fe8b5. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USA2P2462644.
What's Understood Don't Gotta Be Explained
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa651a7aeb40af0d8a64501464120864ee030c1fdaaa0568026398a6714609d24. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:00:35Z), 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/USA2P2467351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2bf953fdc1b06b19795f3fd7d69cc2275aab9b18a72aab27f801da68c6be11. 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/USA2P2467352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2c8f9ccf320e7871f2573600bf0f04ef494bd5838492848f378d8bcb8e53c4. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USA2P2467355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5805ad886954ad5284dc42bb006a74206e9c11c0a563621b69a58618b5ee458. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA2P2467356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb26f040c79174dd09e435088fbe26477c211ed6f159f885732738ce4a0278d3. 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/USA2P2474314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5242109946eefd3d5cc920b4a7e484239c17cc41b53d7a494d9d5e13aa6e92. 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/USA2P2500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5242109946eefd3d5cc920b4a7e484239c17cc41b53d7a494d9d5e13aa6e92. 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/USA2P2500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7088babc8709974f912e65308e30f7096a2d81ebe24dbb80c6980aa78c93e. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:01:29Z), 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/USA2P2503173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaceeee48678769301ad4d7a1669f7fee4bbd9beac82a1b332b921cbd53a91974. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USA2P2508851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcd4fad0e590517bfaa77b0842b7cbbf7efd83898fe2dcb1b37d9f2e03fbbb5. 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/USA2P2508852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c18a143912bca57e6356a89fe697cec282a032be44187f88cb42cf980443eab. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USA2P2506325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c68576b61b067777f35142eceab8cf8a7a8a94a64e11c8c75a5f36590042eb. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/USA2P2508861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe916cc2fd3a928707fd126a3bb8c50b6f858cc3d94bae1ccfd2a320e0e634a87. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USA2P2508863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfe8eea346f18dccf321b85bf0b213aacf52717c1d16df1093eefba2e3ede4f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZTBB2519008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92241061aecfadd3d8b0957f05d9489bef3e1fbb2c8ce7625b3bbc8d8a7298cc. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:01:37Z), 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/QT3F42505543.