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 0xecfea5f8f72c8eeb39c104872e460fff840fdbf1ef6228e48d3829f794363d8c. 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/b1f8497e-c8c5-4033-aac0-c9a21f7d21f0.json and https://artists.proofprofile.net/proofs/artist/b1f8497e-c8c5-4033-aac0-c9a21f7d21f0.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 0x2231059c8a712bd041a7f152d5abdd61286bca1557ce33576308b304c0dba427. 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/KRA401800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daba7a00c8c407ad6a90ea19d406bf09affde0068d3fa4b0fd19caaebaea066. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KRE131900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009fea43688c43ab89d2f7c278f81c425b8a3d65cb5437157a38ff8edc467554. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KRE131900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c1b5df46f6e581082606df6e7be8b7017476425aacbae085398930e616c8c4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KRE131900072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a374305dc5af50f4568f29cb65c913c36b4475a8873ed1bb1d2a8217a3bfcfe. 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/KRE132000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227e53a8d3bbb0e467c90aeacc0a6b5b8d49e601a3cf3e1513f639bc893d013e. 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/KRE132000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8644752361fb7fe688d87a85593d184ddee6b798fa4b7d5c3eff02e4bbc0c5d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KRE132000066.
Spin The Block (Feat. Paul Blanco, 365LIT, LIL GIMCHI)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a46323b45fbd28fe6ac37b3119ebd177021c6a44fcb86ba5c696b8e56c528a3. 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/KRE132200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ee2edd1752080eca9e139924a27f9749669d0398839b757b2eb21f54e739e7. 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/KRE132200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5937521f75b0d043b3b5642e515f3f45a821753fbbfdce82c394a9aabb537587. 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/KRE132200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b17c618de58f856620c1428353aeaf25eeb5103dfc4c886b54d944c1d11dd94. 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/KRE132200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331ffc31cfbe3e6dad3703fe5b0db4c45f129f7eddaa2ea2dd2a61ab8a5e3824. 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/KRE132200005.
Urban Area (Feat. unofficialboyy, gamma)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669b9fe1a77119d38a9427796331d0ff88b3db7dab97fe6d0b5f49afeb7ba905. 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/KRE132200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84da58d7adb9aedd0ec718b1f01b4b3ef3bd29d36e2dcc0539854e88693b0798. 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/KRE132200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a750fb6717ac81cd906e2e2c2d1477ef7acadb2f49e0241e1e2ec1461fa6396. 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/KRE132200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a6ae081aaa56a81f373a9cb2f9bb46c32ac36626876d1df9d28e0cd71cd311. 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/KRE132200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13532d4b2b0b4f1d3cef0df52538867df51752e4c66b9c21da47ca1adf82d74d. 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/KRE132200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbca4c0193dafbc5af7dfb1ab828a2713bc05672ba552058315dd0e5380d7dfa. 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/KRE132200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b6c9ba5a51b15394cd99525bea230fe119f36c0ef87f5c6ce876e9beb0e502. 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/KRE132200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978ffd12f911a8997067a2fb2a39bcd4d10b70ff21dabbf5f649455fcd973cf9. 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/KRE132200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0de8569e756e51d5153b947f733d1c79219f0b5326d5c8dd299ebb16608c67. 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/KRE132200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1899b2075ff4109f29b535ee1f2e6d3631a082b5097f888f5957a90b5fcab9a. 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/KRE132300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12860a265d75b25b9307f44e71b8f2209abecd774a9625cb52c815388ca1bdc8. 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/KRA492400747.
Is this too much? (Feat. Chan, Hash Swan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10944e2b6bb6f3bdd6ea53b7e75d0e3d295ddcfb4ee92ae8cfb9389ed9a49fc8. 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/KRA492400748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96063fd13d636bdb05bd7c7785494c305633a4b395dcadfa610203c08309b9f5. 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/KRA492400751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5648d8e82efc3b3499833265a68c684e1344d0b6ab7598a0dd44f3deee72a9e4. 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/KRA492400755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0b40bfc38d6a926202ead59aee35a210db1299cf0d79c21598b128aed57a10. 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/KRA492400753.
Too Hot (Feat. The Quiett, oygli, Street Baby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9b9d399ea1e8e3554c1caed5c9adf81929f93488ae8b19a588420211c57f7f. 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/KRA492400754.
Dirt on the rose (Feat. h3hyeon, Skinny Brown, DON MALIK)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38ffbeb5be8c484b2e6d47ea8ee4aa902df0b8796ce429ecfd2dbd8b51c7d85. 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/KRA492400756.