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 0x6face1bf54f796cd9e500efa5ce72ce0ee86de91957dcf74f0dbc806baa20e71. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45f7f261-aba3-4f9a-83cd-b9147a730a3b.json and https://artists.proofprofile.net/proofs/artist/45f7f261-aba3-4f9a-83cd-b9147a730a3b.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 0x60a66545cf2d82600226944bc508a8f1abfd55df704330fc8eb6b133f2e90bb4. 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/PTEN11600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6822b706615fea19dccf3d64e9797409ac718d167ee43e69af8667a8b68cbf. 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/PTEN11600015.
Out of Sight (So Right) - Max le Daron Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60cc14f54d6bfc5e98c578a7d0e9119cd345fb170981373728bebe166ff07214. 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/PTEN11600016.
On Top - Ckrono & Slesh + Beauty Brain Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7bb112cb2f9a284ccbaf91605478d565847af992f96c6908a6be756b6a943a. 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/PTEN11600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cc714b0232e2360137565572b8e857d9d60dc68d89a6538cd617a1d381bad5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/PTEN11600020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51ab33f2dc78f9f413e0fbfe07acaa29d66ec4c5f1bdba2eeea16c0eb10c5c6. 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/ES71G1947788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f34500cecdcaa64c6f57b43425c22d21c92f43c86adb5b207647b1acf834d81. 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/ES71G1947789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0f7003ead8f41f9c95bf3a0433a23169de6af647cf5c4b181dfbd81a1e4bb1. 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/ES71G1624806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca64e88863d9ee958d2030f2a43269a0092a83252b27bc7adc88ee144558909. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1624808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c4793b486fcbf57b8e171d1766d55ff4efb58a81dcd1ee45fb3cf909ede7fc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES71G1624809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fbaf46e2650ca17cc87884b907672a6d32e05051af5d21fd58dbe04d7bcbe8. 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/ES71G1624811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b6b9024eab7a6c740ef40d7f89f76f6931824898342e8022baa36b5fc3b9eb. 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/ES71G1624812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00bcec9803aed8803ea6d1d012a0859d210f9c5b9f87930b9683697f495a515. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/ES71G1624805.
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 0x6c505751f1f59fc625bcc6f76fbde5978f4584c0a1057c338c03a7c1453cf49f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ES71G1624807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613aa1dfd1ddcedc0436015bf6b221f770200535bd2def9eab81e4f26da88ee0. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ES71G1624810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1632a82220c957c6332140a6e370faed3d7468a8b559d31b3426151831dab09b. 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/ES71G2216380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f7a7acf5d315add7c1fd3311d8be9053164c720e19fa808d8c8ef6a6531003. 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/PTEN11400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee18baa39d927947613891e7d6ff9ced5ecc0e9eab5bb87f91787a4d7b1f73f2. 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/PTEN11400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a24ea6128962aa82c245982c4c5e123f5a1622feb0366ed3b2d5415356930f. 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/PTEN11400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd180328f7e549a0f17c34f7fc3910f5bc5e8f7ecb4c6248b80b37cda24f6139f. 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/PTEN11400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0783dd593a106c1fef93d9c180065c212a7e4db354d9c730b174f6ff2220af. 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/PTEN11400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94bba3ff2d5b6b95948988836daa3f72bc8c3f2c6e7f1b2ba1c33cfb23177ec2. 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/PTEN11400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90288bc4b0dc17e774250fdb4afa8db1f70a88271dd3858714753bf34c090cfa. 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/PTEN11400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee42362da2b126523d154089d9427821333036bb8d8e1f6691347c0b5ea56dc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/PTEN11400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fb5715052379275b4053887421c1dddd70973a59247deb0a833bba0e301bcc. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/PT6LV2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab67a131fd64c33d6fabfb14a269093026050835134b3e5cab9451f46d8a876a. 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/PT6LV2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59163830ffa47addac32b825604485546ff9c48c40dbf7134bb486afefff4f2f. 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/PT6LV2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf199342b4973d5f041c5ab696cb050015a8d431e89c1a36fe3a9dd074ee16547. 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/PT6LV2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce453415f20cfd2113ad13d3fe6ebfd5163745d641b7de390a7d8324489930e3. 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/QZHN42350951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd415e12914d6d7b9b3998339060e70f2dd40d836e99a1096ca9a8cc320a7c49b. 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/QZHN42350954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36de959bbdea5ccd1af8a6560b8cc94dc624813159956fa704189f18ef019ce9. 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/QZHN42350955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9940e457043a0a1f7b542a7235c9cb23d247af2a87e78617e44791f314bb7d7b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZHN42350956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3cf23e332ac7a057a626c2539269bcff14ce13eaa53d0821676afb6e165d720. 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/QZHN42350957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3971d3d61a40dc24d47dd09341ed5c8d7a405132fc33db6ae5b9c973bd56dbf6. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZHN42350958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad89ad10d5a89f728e57ccc4d08f90280f340a76c937856b799c914a3bedd5d. 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/QZPLR2041142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c092fd77175c0f027e269521b169257682966ca704ebe6f3a3bd0faebea2cfc. 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/PT2A02520002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47b860089cfb7b7367aea2d51342ad28c007ba735914423f054c9e6e931579c. 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/PT2A02520001.