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 0x8585850e504a2a387dd3bcb05cb068be6f50bc7418c8652376f10e5f4d8a4b68. 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/679e4314-3766-4eb6-a771-9f56482a1c33.json and https://artists.proofprofile.net/proofs/artist/679e4314-3766-4eb6-a771-9f56482a1c33.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 0x89e388e3e433aab005175fd06d0c37288beec3c1970cd4ae2db357f4c0d83dbd. 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/US23A1582752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0e789ef37c779ea016bc2ab2d189cb2c8b3fec31c8e6e3eef0d4578d3e9ea4. 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/US23A1582753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb39aa2eb81346ccca35d0c21daca6ddde2b4a8fa374ecee7e6c0413c4b56aec. 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/US23A1582754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e26dbe3965a14562f4ca4882165980c286a1ba2cc7a02c4c101d98f0d517111. 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/US23A1582755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661525e46932cdd0599eadbabf31592c7db3cdda3df26c9696f49201f8fc8bf7. 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/US23A1582756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e2d2b37534bfed568af0704c11b6f12b099d53aba728306bbdba15a5844078. 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/US23A1582757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ca92902852244fed9b64f7dbea577f24940b668049c6cd007a2be24b3ab621. 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/US23A1582758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4241428a340b0bca1734171cb1ed7bf368c73205a4b837970b0394453bfa6c51. 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/US23A1582759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8b4d8b7da5260270316b072114f70060f7d559d53d9f8e1f8d78d61705fd61. 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/US23A1582760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a32a689601faf5c02b01c4c7efc376cbddd8bc3461c44c543574f645a13402d. 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/US23A1582761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67118427fc027b68e7b8a23e374721847088834fe0aadabad1c59a7d0bb72b73. 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/US23A1582762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae04beab3efca3d53b70789e349707b090969beb1955b6b1ca93dee714527663. 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/US23A1582763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17c6bdd6a0074932086e93cfd3a3402e5442b86b1bd74a9105d5451eee15c47. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZMER2180110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e764cb873f65627e30946dc76ed787d621bc95ee86f075922f2dd91e71fe1b7. 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/QZMER2180112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5035e36234f85145bd3f980da8f37dd1016a0461d445696b364a0dc17bc3507. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZMER2180114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb9b4c6d043b0567ed8db982c3e43e8a63976eb18ae41b2ee34d7970453e619. 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/QZMER2180117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed0acf3d76f13f2aa5cd133cc6be03c8d7ea4e3306f6ed40ea9df291618cf15. 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/QZMER2180118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3442b537006af893714b82f8b94b9685db1ad4038af6fcfa1fccaf58d60e0646. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QZMER2180124.
The Other Side (feat. Odunsi & King Zamir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c65a38116216c4dc5adfd3a3a6b6b2c5620853e43e8e9a3b812d08afe90d5e. 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/GBSMU3776028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08c4c305eb499afe9c50bbd1de54406d7fc2e180c31d34515f82cbeab213f35. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBSMU3776029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a115b642d1a3258f8821b55b23ecb7f11fde58661e2140b2669a883db6b216c. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBSMU3776035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93e2622e2523f35fb46a8ae720c1981f83c7d2db5e2f1ff0436d4fb5c81107c. 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/GBSMU3434857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4ca61c4eaddbcaa9e09c5e0657c4cb8d113bb3551aecd923c5e896c444bc95. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/GBSMU3344274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c0f6954363b6d447eb630ff7e114ae9240fa1716b7a0875aaca7bb241626d9. 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/QZTAT2488743.