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 0x3ed30dccf2847bc2c5943db2c57029478e7a71a717ad8d6db86384e1152d3303. 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/72b0fc09-7a79-4502-9054-a771aa8dba0b.json and https://artists.proofprofile.net/proofs/artist/72b0fc09-7a79-4502-9054-a771aa8dba0b.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 0x77c0e12e2ec825e390dfbd102227b525c1cb046f3c925d6b95a12c36faf37919. 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/QZTRX2437198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba88ee1bd207b9687b761518265f80a4dcd999251059f92ea41d471d270001. 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/TCACL1614162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5123313bfa47786b87cf4ead39a8145b7586c27c2177f81b4ef566ac32aa2320. 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/TCACL1614167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dde1abb2dcc9108ba9ef89ddc3ee379e6040d13a3d41ca39c8c1dec5e71f610. 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/TCACL1614169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11d651f421b027df402f7a5c217309f9ffcabff3522dad9459d508d316353f3. 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/TCACL1614172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4139f444da0f83a12d0ddd73c7d9d4e039cc71b797ffd383e3e8f3afaa354fb6. 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/TCACL1614175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64136be225aa4633e91e87e40e2047e527c2e7ac9a9dbccdd18b27b95ad34629. 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/TCACL1614182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270cc17b9c2a5165a977273b89caf149707e84cb09b90aa61b72a3890b181314. 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/TCACL1614208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa190558b04fc2e961551bc60bcffef265233da53a59025fd7206e9e4f1a06c0b. 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/TCACL1614216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c31f31f4013e9ccf46d9dd54cb50674a0f13a81fa88e6de4058d2054ec59baa. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TCACL1614222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a9f747685cfa90902a5d9c52b91a8097a02aec77782b7ef559176a3e66a3db. 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/TCACL1614228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e32f2815273d4fb5318efb8600b9b1151b6bcc64168246afbb5e96b139fe652. 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/QZG2X2412804.
Machito Ponce - Ponte a Brincar (Deep Sour Collective Remixes)
Ponte a Brincar - Dj Micka Groove Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9887876612e688af854bf14baf86b61dec30517d24f0db7ef974237c4eef3b7b. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/BGA472436394.
Ponte a Brincar - Deep Sour Collective Official 2024 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07ff0d0eda4030caccc3f24420232db650011a27d8ccab10a9e6d015eaae21. 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/BGA472436395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd718dd5e4708c13e937f1d24c1ea7f158e7f2afdf6620a46445e79aa6e6fcff3. 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/TCAHZ2498108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83d510dc73fc7b2ca6a48ea38471eb233c86bd4133882cd64ec782b388b288c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAIA2446370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221d541bba3dbbcd8b748b0fcead07cb8a95370e5a90223ef5f219ed9e1f810e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TCAGY2324811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5599a8f071cd8c11653a2972a37898f61a62b5a984feaa98cc6beae4d7eb7f1f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGO2280949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445a1a37cc91d14c7ebc8b9a35dcbdb33212cbd3baafb095b8ca15f45d74c29e. 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/ARA342200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59cd1decffbb052ce0243d8d48fc0ae41cf940c145c69d977bae1238d4cc1436. 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/ARA342200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08122fe8a84ef63011102783a5dec2c5d8897006b2bcc9b194c696edcb8a6bd6. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/ARA342200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb60b23b74980d78918c5f24c899f9feae5db34cbddc104b871b407ad5607f6. 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/ARA342200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abb4f9e7867d77b0fad78b10ceca4f7ae6ef1f5e46ca85989663057e54445b7. 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/ARA342200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x910b3f5eab3b2a07056a97c4b3758435aa4b07e0f3c3e57363af6caf2f71f256. 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/ARA342200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34a68e5c5dd0f83653342047d37383f9249746c42504ad4dfd2b5cc983d0e09. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ARA342200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5f704ec0bd0f58bdd70d284c61351291edaa026649f1070092a50d2f05e6b0. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ARA342200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55f0d47164b76702ba0e7d11316436cc5e25f063cee4fdcc4f2552e7d395f47. 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/USEL10500248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44901f75eae96d09c64becf0b73ed7385cd99e03fbe84345c7879ef09ab987a6. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/USEL10500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b606a5cf3f7c015d1f5a341907ff0148782769d61ce271a05605733148060fb. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USEL10500250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b37e6d7d61d9533d99a0d55efa9eb330265623bf927687d69f1d90c25586f85. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USEL10500251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c17607bf6c3eda935c26fb36d721941ef621799374f115e2ea176d2446e1dcc. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USEL10500252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4309d4983daa1fea8bf245023a20075298d743f489ee10f451d52b959ff692eb. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/USEL10500253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768e96f80dae2f0f8621afd96f852ed132ccb0980c08b01f1f6819bc9930ddc7. 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/USEL10500254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ed22486d0809c34e8228e76bf17cf4ab5166ae4114aad359372140776f2d66. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USEL10500255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031a4255ce656fa3a46c8fe4f151a4b0d01e183b44f1adb5a644573310ef9092. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USEL10500256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a782f01ec79730d9d9c2b9d28d446420d26b803e83fabe5550f085e4fdb0533. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/USEL10500257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78e05da533ea0582c7d6ac2e1d0a11dfbbf4bcbf8c9b4b3f5aad55fe0d54ab6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USEL10500258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366dd8a1979980a8201fee88623513cd08ceafa5d5a44aeea6a94eeca1d48841. 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/USEL10500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x745b850bf7092da6b580e82f3a77c3c99eae905172754d5673ae2d3438ded362. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USEL10500283.