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 0x190f1e0cfad40c1e0bef5296a1d11a031e0c845ff4390d1ed2d59877c5953f3c. 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/9a722199-7f49-44c8-bd10-7007e790ceb2.json and https://artists.proofprofile.net/proofs/artist/9a722199-7f49-44c8-bd10-7007e790ceb2.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 0xaa781fba03130d3cac0cbe5a14036d318b98b827a983b0edec8ed07c4ce48bd4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHN52223783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548a792464eea3c957e25c4e8b1f014f77a0d01f3bdfd1d581d7e71caa991697. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAY2205338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b8fe77cf1ff9d7cd4c053a540202f5b5dcb63ee7e54f4b4a791dfb55a288c8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN52316095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c3b200472b681b2edad9a8c7bada498a25aa48e41f7eb7f038c7969a35900c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZHN62335012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c8894796674bc2caa0afd6e368e2885027eb003773c4c299f55212802f5bbc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN52308829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf803f6987ae4ea5648d49f9b9f16ff97585006bf30a1b145a64a93d53ad0c504. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCAHD2384010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9226738e1456276e2e7076c835786c1b76d5333ef3be3cd67e457c5b06ff85d2. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/NLRD52319453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09eacadcd4743eee8b446284e1145c39dca99b712612d7e55d4ccc92a360233. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWW2317971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebed26446a04de18186095bc6676deec73f78a1e822e497f59441a29bf45a9f8. 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/NLFL72300623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4794730afca564c327be86313aa1106f9b5a74ad1dd385a0d7fbd56c10025432. 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/NLFL72300913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0373fa0e5d8554208aa2ee563d100d44cac7ca9270f483eb4b85280aef715e90. 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/NLFL72400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5e6e564b562c822862039968a2fbbee6cf0efab4d3f374821f0c8a8acd0a7f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLFL72400229.
This One Goes Out To You - Bumloco Remix
This One Goes Out To You (Bumloco Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bf28c6756bb9781a0c4ae1c348a3bb825227c5bc77cdbb7f9ab7d25cc09942. 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/NLFL72300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ae030f74c2bceecab9106d0d824d954c854551f19cceb5787ad596eb9b954f. 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/QZTAS2265127.