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 0x8081159a41da70a839cb6e563250e3242c337f3c8a5b2553b29aacb468e8b41f. 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/f5afb1c1-30d0-45d0-9a70-0c115a757ab6.json and https://artists.proofprofile.net/proofs/artist/f5afb1c1-30d0-45d0-9a70-0c115a757ab6.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 0xaf8dc37bfabe20aa3706e2b288088a432d02f3c2b6a0cb58587efe2f466e7125. 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/USUM71807758.
Posture (feat. Fetty Luciano & Fivio Foreign)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e421d329b169e31d5972d4ef1af0699a77b39df469f800a69b66d22cbba06e3. 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/USA2P2323061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4243fb832e3c2fb57e42af9e8a060637b75adf3cf48a8c94db08691af88e496. 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/USUYG1373169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb651c391edf6f0b36d605794a098edc64d2805bf4ded5121bad5aa04d94a4a6. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD91757394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed791d0e59f33ca1b7eea3052dcb5eeeb887b3b79a2fa4025e3d52b0eb370f9. 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/USLD91757396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afaa392c4c3746f4dd8e9e87be38a9bfdbc65acc1c4667f5da4d5290075eefc. 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/USLD91757399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0952f9eb06e2e7cd64889adafb98a5be3ae66d3128ee9c09aeee167363530112. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USLD91757400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382d545cffdca35ae94d0e87b32438ebc707a702b8cca4bc36d227fb1800980d. 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/USLD91757402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e421d329b169e31d5972d4ef1af0699a77b39df469f800a69b66d22cbba06e3. 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/USA2P2323061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fccaf4b0754fb66d83cb4ac717af4b666ecfc0370c077f455db8af5efc7bb9a. 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/USLD91746175.
No Pressure (feat. Fivio Foreign & Rah Swish)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e695781ef683e5de682c70edf350b846defd5aac34060516798b0827db58e4. 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/USLD91746178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c20fd2ee5deec0d6472aaf1b8260a357b3b514bedf3d222c8d0d9b0a81542d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USLD91757395.
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 0x5465c0becec6d1a1adb2bd6941089e44b9e21fc8f1598e9bb500d99ad5fcb5bd. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/USLD91757397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da6f8467e2c717460aabd6b3e34625fe48915b50c68f4f831288e08fc8884e7. 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/USLD91757398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cff9de88d8e00596613ba551de109baf9ac65193fdeb75b54576d5ae3d8ac7. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USLD91757401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f292c8d69c93ff01a6994f5deaf4fab74351b89406c97bb68050167f94bdd1. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USLD91757404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53706eb159a3633d7f3fffceb9dd621ce4e2b28487297bd1555ba7740efb9a50. 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/USLD91746174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebac2e76314e475d3ae24f8cbcc7347bca6b6b80ea128429932982f11479e07. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USLD91746176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cedbd626c1ddf53e59ef00e54c59556edd6fa3f1c871031dab6fa0cba07db7d. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USLD91746177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3342bceb2841c0df894306f73ccdd97dd35f7bd02d46c41db2529adedcbb9c1. 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/USLD91746179.