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 0x821768940828eaa9bbc28b8093118488c59dc78eb82b8735aca2618a86c02f71. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c9d0eca1-f963-48ec-a89b-e530ce7b1d59.json and https://artists.proofprofile.net/proofs/artist/c9d0eca1-f963-48ec-a89b-e530ce7b1d59.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 0x8b944aa7ffa409019b5e0ec24b43e9f6a68fb8893625deae6c423b618e7a9b77. 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/BRFDG1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4e5b3f1b8fe4bb5943592eab28a20de9c8c4f7f59856647ea7472f85e763a6. 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/BRFDG1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b787bb4334c23fe3b15e8342847dd1b48f8c1677f102c6d6ea68c20f9e9f44c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:27:58Z), 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/USCGJ1654645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700261ae3a4d29a6ce2c0e4442b86b32d2b7afc4d8c60e0edd446cd60613039a. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:04:03Z), 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/USCGJ1648191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c903079b2bf77d45c4a1a7ff78bb6b4677afa524412326c57eeff8255dda440. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCGJ1648196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x053e285f2cdfdfcd89a8cf054d23849e96b783741658a80a0ca61163f94fa469. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:19Z), 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/USCGJ1648198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d5558b6683a978ce80d344aed43f2320e4945a9efcb2892bc7e7f088c3c915. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/USCGJ1648199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa682a8882f3e524ddf61c50d2679abb44c8880c66b4cc62e226ae1908fd1bc. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/USCGJ1648200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c4a08c49dd99a78c4e34c4306f23b32706b8605a2b573d307715fde821f482. 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/BRFDG1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9462095996aa645e6cd2b1e42739a0a2a3547fb99490e8e56b5e0355b90324. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:27:31Z), 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/BRFDG1700002.
Fonte de Vida (feat. Adhemar de Campos & Flavia Arrais) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb745df4af1b7e4278fddbe2ee612f5935b284a3ad2b1c33e763d9dd1172b08. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T16:00:22Z), 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/BRFDG1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6361996c0a977130f801e358c96b8cfd27c59f310a5963a4bd8118a6e44375. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BRFDG1700003.
Eu Decido (feat. Flavia Arrais) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd3ef42551a79eaf6c8799d61f918638e078477fc4963588b515aaa1ea453d1. 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/BRFDG1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d0e66a8c803b8ca075e59f21e603ab5e0056aeb1c57c6c50f8518cb808ce93. 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/BRFDG1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a84e8da2453ebf89a158855ef582a19795ed16cbe9a5602bf140f2273bb90b. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRFDG1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246bc111d2d5be509c876ef397306eb9c20187230d81e5e1c6940dd1dbe5088c. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BRFDG1100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c7db39ed05deb85eedf8694ad0f534ce4d5c721172407f0fafcbd13f6d2b5c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:58:52Z), 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/BRFDG1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55f54f2b5de683da17271be4f0e9cfbdf177e79fb4823519fcfc9984d0e93bf. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRFDG2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc158359cf62c422c174be3ba446f8a0ec3c8f8c06d88daa31a048d01e97744fa. 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/BRFDG2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7c7a3c612cc3e2f74513f50f5b114427cb488ef53865f2c9976927a95f5015. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRFDG2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0985a113dd2c39bf0e5741f9e42de6d519be164f619c0a4def6e1ffcc310479f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRFDG2000005.
Deus Que Cuida (feat. Ton Carfi & Deive Leonardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8acd02d959ea9dfb668309a29432e56f44770f3a00e1a125e7c53eee1b3abb3. 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/BRFDG2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0483485fdc7d77398f6419e34184e60379d36cc07540b206a3e49a03c01329. 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/BRFDG2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9a9cc23d99ad51e9308e8021dee7668d1fa407eca88aff8857540dc40c3497. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRFDG2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cae738afce98c7efb6e3d38e4a7ef2d7c8de53bd3f10bef8aac97d8445961f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BRFDG2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435549a857d597934979ba70a2c2c203a39d8fafb2668a64183d2e60d8746e0f. 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/BRFDG2300011.
Yeshua Sempre Vai Me Guardar (feat. Leonard Jones)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4319e7e54bca861712ae5acdd84a910054100c59c279c544da03c067719d81e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:28Z), 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/BRFDG2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b0d8c5d0db5111166151064a209ba12dd2821dff9c1dfc0eb49f4d5ebc5dcc. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/BRFDG2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac38c53065f0f6c40ed42dc52c4f2c465d967a76939697834176d09ff03e0450. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:03Z), 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/BRFDG2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad52ca64f2d32b8b7c15843cfd281b67f23de28235f597643a8854b906191d6. 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/BRFDG2500001.
Quem Disse Que Eu Mereço (feat. Fellipe Fernandes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf52e9cbf473c3696a3fde25a69e4b249e1c30da219bdbc644a0ecab1a9e9904. 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/BRFDG2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f15a7348cb0428d87179f623c25dd466b60c7c01105d9f9fa85d691b3e0e83. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BRFDG2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e15e61a23415fefc1c8b5945273423f46e1d80bf0794ca64e8624fd8ba4d513. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRFDG2500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2025d69cd701c12857e44991cf5fd39c03b26c52bbfd53b50123390227f2d4b8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BRFDG2500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaedd71d10b3e0f12389f7599d387215164b7b572031d06ab0da929b1f75066. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRFDG2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf208f95c65ad38f86279515784a8c2e5b3a5cadfe10b11739488a33e66d69d57. 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/BRFDG2500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300ca494320d80a479a924bc698fc6949275abb65c195695882d74b3f1e5a53a. 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/BRFDG2500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bdb87c974d7d004b1a22f8c7b5c944faa4500ee15af6e3f7e31d797f2a1e7e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRFDG2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa373330278473b57823d18af4c4d4ee747958110eae3461ddefbe1ee81417735. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:07:07Z), 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/BRFDG2500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3976290ec888f2823ebc2492a0645951f5e809ab95a9b7ae7989cfa22ec709b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:55:02Z), 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/BRFDG2500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277e2b4dedb4c096dd19dc9406769384a8012b7240cf888fc06741fe493b63db. 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/BRMLH1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee169333f932c5faaf5ba6622ca63c87bd53c80ca4014ae6c958d760897e110. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/BRFDG2100003.
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 0xa9d9efb3d6445a44f5b118e647512d295585217322d8fa364151658d0f7a5f22. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BRNQ01600010.