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 0xae3a27619808529df4c8a97ab11a37b53fbc093072e71b92d7f0b8e79e09dc3c. 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/bff24244-f4a7-4571-b158-f3040d6ae541.json and https://artists.proofprofile.net/proofs/artist/bff24244-f4a7-4571-b158-f3040d6ae541.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 0x70e9b227ff4ba4ae33bd87adc89605a459ebe091039b7eb0a17a13c9824dfd6c. 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/QZMHM2285503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0fe5fff6aa9c1354987e3896238437d6ccf94ac0d83cff6715a0870677c4ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZS632282675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1ad7ab088c1609b756002c2e0fa61b5f029c97f9593818dbe4470dc3b96e99. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZMHM2215021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83686f186c917b69cb4e1818e1dbea1c1106ebda2d32f736a408c76a1a1dbd37. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZS672252209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1f7d5ba54cd90e14822cc5e8593b451f7507885ddaac67749528b32f6dc8f8. 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/QZMHM2277432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab195f7a057238356bdbf25319120705a8a4a2bed5e8ef61aff452f79b2e2a5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/KEA842200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c97a62aec45b423fa9f78626a047ce7f41feee54d21a9ec2095fcce817b7b3. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZS642353071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fc342b5c476143171e329c10aa54a8c10a9adbe259b98629c62e37876753e0. 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/QZS652419778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1295ec19a8afb5bdc8f507e551aa15e5ca28c2857561499d4309095ba57b5ab5. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/KEA842300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be233d248041947e9c15847a6064de0c15bbdeb5f3e83b0d62c6aab3cbfee6f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KEA842400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac8a65c39805bd99f5622d726ea6f20a8563ae8b6fbe8cda2dd112830feb25f. 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/KEA842300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb95390e9c23dfcaf09e656cffa797e4e9164e1f11e756d98229ff70fbe4e95b. 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/KEA842300046.
Watoto Wa Juzi (feat. Sugu & Country Wizzy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd5877c301b91363c3344a66c2e3d3b5a74a65357dc4e76aafede4533129126. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/KEA842300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e14a2b10cc5441d4c0d8f673c416fe97c93fbcc75a6870810b1ddaa4182300. 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/KEA842300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf69ab3753ae0877e0f9251a7568308b573b69ea0e0c9a638b9a348e4a645e7f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/KEA842300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452cccee0379724d7e127bd8fc6d7c2436bf2ad473e649a5e1acabb2389156aa. 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/QZKDK2528153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e45a3f279029c04192415afeacac8317fe9c03883d2d557d7f2e3e9166eea5. 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/QZ7D51701522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde04d43a181dc86463a53d87f2ee7f4e9bf950e33cf53aec789b058655f16d7c. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZ7D51701525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7dae5b9b149972766905a872597533bf81331fa31af80daf64e794d01ab1f58. 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/QZQAY2200466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7f39bfd4afd680458827505db1fdf82e5d4db3d113c4f129a64252427f2a7. 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/FR2X42061488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18edb61c586173a0a306edd6934160da40bd6bbd52a5cfd6405022c807839a4d. 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/SE5752191734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8e64ecde1d883777965a74925baf370414b0aa2dc9869d650ea54513bb4fa4. 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/QZJZR1901626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34aaa08cb62778648e4416d54c1c66e573d1c53b3e233fa57940be082d1bd320. 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/QZJG52288457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d24a1bf158c1304152e598b150bb83c9a4c5737a6ee5e5d22b611e2932bf143. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/TZA1X2000752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b97c989f6b9eb25e5b751d5728d2cbc5d0b1f2fe400232131ffb9ec4245cd38. 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/ZA40S2402179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437741fdd60d71f65297835d7915b596b117512a281166087e76b2537567cc48. 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/QZQAY2436518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bd2ed4706db021c0a83e0ac0d54f7a35d90b30fc854e20db3297e3a759493e. 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/ZA56E2201301.