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 0x5cc547f22b7ee4cd2ea9e4562afd8257997ffea09d39b364af9a9cd95587274b. 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/8b23c40a-f094-4090-872a-25a7d6abda52.json and https://artists.proofprofile.net/proofs/artist/8b23c40a-f094-4090-872a-25a7d6abda52.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 0x8a3158844efd4f6ebd562577f9d9b2d743cb781639a4aaa835237862e62c4fcb. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/ZA41S2101540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c735e7bf0a6819b1e20049739d4bbcfce4b5333d3c24b11abed8286c378134. 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/ZA41S2300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefae002c1112db69c067454ac2a301ab06224069f17cb2fce953feec090d4cf0. 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/ZA41S2300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ef6c336161e34a54613a08a8db04d907e872ae0d3f7cbd8f4b823c345f7beb. 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/ZA41S2300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c8f19381d22b571416f0e263f46f33242da2e707ce1f76010fafce8a63e528. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:01:53Z), 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/ZA41S2300193.
Cocoa Butter (Remix) (feat. Kojo Blak & Chop Daily)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643f922024040ee35f708a7668686322920a087ab5a7dfcffd92bc80802e26e7. 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/NGB132500068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00203fddc63c52f3677b62f71ab8df3dab30dd8bc57630209dfff1c86253e374. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/NGB132400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31351d2f0948523945bc7f0cb184432278cfcc4c12102513f40ac2675a9dbb7. 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/NLRD51968886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31351d2f0948523945bc7f0cb184432278cfcc4c12102513f40ac2675a9dbb7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLRD51968886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d4e9ada636995473dba2c12e022b212b467b14ee5b8a69a905e3b819829b2b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLRD51968894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c410b7ac95f0467c62337b3d04e92ffc9bfec45522426c026a42dc96463bb0. 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/GBWUL2316352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9600c9d9fd4f44bd835b814fc40b9b7926e7e0982917b6c6fecb90582e11570d. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/ZA34K2200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3510521b38b4aa7bd1c0d5c04aeddd8d2d5505b59adf52ced04832237153ed3. 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/QZWFG2429885.