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 0x2fd4afad8ddb05316604b276d03a7a54fba1fbc33342220ef3e102669894f1da. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2b9cf14-ba69-44b6-b79c-c4d4efacd09d.json and https://artists.proofprofile.net/proofs/artist/b2b9cf14-ba69-44b6-b79c-c4d4efacd09d.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 0xcdfa740010a1ebac161c9a8f715b85c6b69d7ab0a956ee2907f6a2728d6dc40d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:29Z), 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/KRMIM2120603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0207c74c0aa6f368a35c4f6784746ba5a79df9a7676a8f50495e829c2404f761. 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/KRMIM2143027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb727c8c6168d243b0cbc179f59fadd33ed04b40c0aa26820640ee473dd197b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/KRMIM2143032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd348fa66cac83a00868a5d0d9e5534255d5e7de89275d46f2e315b643b1bdcac. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/KRMIM2246874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe6b3ffbecaba77492a2238bb0d307861158785181496dbbacc3161362efa96. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:04:46Z), 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/KRMIM2246878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d8b6746740610851b1e6e06e37596dcbbabfba1b9c9ca3ba526cb6032a47d1. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/KRNAR2339239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad4be38fc822c1dc40fbf3ad7a0955dc013ba3708260fd970a068dbfc12b7f6. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/KRMIM2413768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370ee5752d80e138942e0f35822260f80935d1f11d3dded951f6984185c1ebb1. 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/KRMIM2453971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b64755736d0255bd1fe4565efdbc3fe6a1c09e0c17746fdd982b82e0954af31. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:51Z), 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/KRMIM2467304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f8375e664f4fee0fc93c9f8e5c4ec5ed2a0333048913ebc0966cf488ec3f69. 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/KRMIM2467305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71513bbde6a133453203ec2dd5c612f9ddf985cfc33f4eea7a64cad49fb10b3. 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/KRMIM2427556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36011c0102ad227b302ef89eda2749cae28b4510f85aabfb720ee39327461023. 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/KSA002400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a36bf6a85a572d0dc733434a5cd5a30f429badc4f7c1be715b85035770c910. 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/KSA002301895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27a76a342a53cbfca91d1ecc1f7926030f963a613d01e5be9f9c6bc5f906309. 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/KSA002302356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b338c3e5523d24a775a73f1b89be5770cdf9cbdb9b0b1b711c61e9c1e7659ae. 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/KRMIM2203195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e399d96855e3df20c2357dd8a738f14710300403ec350c78bc29a3df26d0fd. 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/KRB142200067.
Break Up On Drill (feat. h3hyeon, Claire Hau)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11feedb3f5a54b735daa96e6c3751c15a351379a5299de5f7f29a62011c6ff8a. 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/KSA002200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67352d9ba75c02c3237a17b51f250768cfbb714c4e0cd34e69a90f95f2ae32d6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCAHP2343088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b2631699ad38d1ab00da4560b12aeb632a635c4ce36724a01070bfe37836b6. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/KRMIM2143558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c38c6da1fa4b691e261006d6f76112112fe00aea3670c204e047dcd440cc03. 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/KRMIM2143560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07c5fd5f7b4a4f134b23542472a25be8a2b69497d522de064d7122f993c953e. 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/KRMIM2143562.
School Rapper4 - Team Battle:Textbook Rap Battle1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b1477a40084233f73de7dbd90e27eb6de7ae47c6f90fd7d7dd37acc871c04f. 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/KRA492100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89a93a84a1a57e49b70d7ebef2fe71363c87025ae7b2d7066b71e9a997419a8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/KRMIM2133836.
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