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 0x0f46c199ee5f59a55f6afd300fa2a3ee6e2010fe15623e5d12fa960081d516f2. 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/6856bb02-d9b9-4cf9-b1ed-50667d4ba817.json and https://artists.proofprofile.net/proofs/artist/6856bb02-d9b9-4cf9-b1ed-50667d4ba817.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 0xe5b7d689e99ed7662c157e38ec8ad0dc17a8a71bc82e29a63f6197ec1864c9ff. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITPVA2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fae274025d4f0ada62bb3b7295132d39c4123c4fa6daeb7e5ee9b31a0ef142c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITN5W2100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96be83a7ca36cc65268127853009be8ea40e89b7c29e6cca9bc6c17b84272f0b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITN5W2100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb5ed205920e49c7d7e203cad13e8cd49b8170deb0ab4bee7e95629974420ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITN5W2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43689688f22975ec4751e6cbded5296a012b68437141acaf928d84855b6c441. 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/ITN5W1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e51ac3def06a7945c432dffd79d886d9e492639e295acafb9ec015b3963693. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITP841800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106df06be72aafde425e1f5c66be2627a54add9258f9f7ed86b3558081fa0713. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITP841800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3fb0eb3c092190ec6e21ee23561ede9238399771a1ded053bb8f2d6a886c47. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITP841800093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8566c416548795388984f32d21e37e7651f22f8ec632c511e350234afba8ae. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X41607420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4cda52a22fda5bc3187d857f74347edc13407f822ee3e6cc0efc8a2d514e14. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR2X41607422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e6b64052e5e63fd0cfb17bf0f3ad7cfdbe4af27695b185afb1230500dfdfcc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITRHE2400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab7b2d256913cc04f34834122975dc049ca66b9b2074510cb58478718f3a0f. 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/ITRHE2400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002c41f2bea4b71706077a2c3fffc1347a33e587180080674db0a31be6804268. 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/ITRHE2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae78f156a388e80329a01b09f0a9cc5a380bd52589611cf8f54da89a981b8ce2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITRHE2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b469696d1da01efe6cbfd9f09f424ff4d0bfc9d1991e852c6f3b361c88764a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITRHE2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29ea29ad7af7de34fde761fe2c4b6ea6f737f08cc4f4f80a7d06f975aca58cb. 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/ITN5W2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576b64e296fbaa270847db2ee66110bf3b0dc5268eff03fabd42befc0ec46f08. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITN5W2100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7000b7de53e0a0d922cd69f4f431bb37a62404a44c977caec93b2f9b078016e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN72274433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80372bc330e3689967af5951015c110522f2942f2799edcdccb8690194fff41. 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/CHAAA2409247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef13fd669da8902887d8c71a852b6f6474f79e34b59048adb0960ffcfa088f7. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/ZZOPM2231350.
Serpente (feat. Vipera, Bruno Belissimo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cf82856cedbc10dbdfc988bb06d0d618038ff4660464834e7cbbbcc9290b4a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZZOPM2231548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5363f6b00572eb06d3e235e60b83ce58866fe540db258e231f50b7c2b17c57ce. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITNTP2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b6ea6428950cf9c5099df9dd2ee192e407a5778b3d0d0f017bdbf136ffbfe3. 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/ITRWL2400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b2bc3de2364c1a5dfa6e299d6b298b143a69693222afbd1bc3282290f7f9a8. 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/ITT742300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f04d22938ab9807401ee0bc90d88d844694e1ad30aead5451e04ba61a3f703. 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/ITPVA2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c84b7e3fe78ad27902867c479b5263b64a1fbf5a7b641a0c291bef960df9113. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITUM72400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42413cb229d9da99f30cac56938051bc737c0f21bb9faae1255ab73a3748858b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITUM72400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db833d7cfc9efad16889e640d724ac6dd1b4bafe148aad8494b2985cf26416. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM72301336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6cd182ac6f77cf0467bee6a207e7404595781b6752e46093dae183733753d1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITUM72400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0bafff2ef67cb263977d4cfd785bf1f91684550a776fc9838b19a9704cdaa6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITUM72301339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b88fc30b294c17cae1bf519cd30e9edb9559e53f0bc167f15b69bf645f61fd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITDF42300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813157b975ef45e0e944363f855e5c371f9b6a41da70657ff0b40419f9f6f7bc. 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/ITUM72301342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb730f15416387cd98a6b7297f684b7d7d1fa42efa67314aacb8d54f5b15100e2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITUM72301334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0651e2dcb68141220e64dc026f6cc7b11bcd9e3682e141d2e9bb583fabe78b7f. 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/ITUM72400106.