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 0x383614f2dbc4f0ffa0945c2ce67561c80546fd848114408ec03d2c1e733d9e9d. 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/5fce209e-97ed-46af-97f9-c051c109fbab.json and https://artists.proofprofile.net/proofs/artist/5fce209e-97ed-46af-97f9-c051c109fbab.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 0xbe7bfb8f36379e186251d937ab0d20f36661ecad8880229d6a6ae2091d683bba. 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/ARF411900147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725aeb2554f289eda0af5398d9bf5c2a8ee8f0f65eb5b16a7303148921f29c68. 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/ARF411900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523fe74b7a8ba90dded59472b3a47bc609e2646ef6c3dd23f4b26c9174f56b35. 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/ARF412100244.
Everybody Wants to Rule the World - Dataset Extended Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5f1063768956d5fd10030a2bc04253311b954900e0c0cae8783cc597e1ed6d. 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/ARF412100271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9fd9f4fcf574a8c9fd805b41d56fc233af952639b9b960944888c7d8cebc29. 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/ARF412100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a6a8387ca11a95e5d61ba6a3138f465fe9a8a25f44ce27368d5f48946cb4cb. 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/ARF412100205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3294a0cfddee11161df768a72c8308a0656eebd655c7090f34977fb87c98eab9. 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/ARF412100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a89d2f4a2381210a547b0d099fd75167f3fc6701446692beb16d6f8b4ac16b6. 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/ARF412100282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693d8c0aa8f7ed4638fbbc4863cf5913dc69a6bbee42f46ff643e5e2c81fe471. 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/ARF412100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080f9f3553fe0cf7bd24e0993b47d5c861c2bc65cf38b586282359f5c61d462d. 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/ARF412100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7e8f16ca121d6785bbe8880dee027c9e342fbba9b5373c9f6319b1a2a78905. 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/ARF412100199.
Don't You (Forget About Me) - Krister Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f824eb8289b2a1eb774ff92435b7dce41ffccc5330e500480ad0533ad1ef89. 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/ARF411900341.
I Never Thought I'd See the Day - Dalbani Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695b9ec0f96c89ac0ec9566afe9ce86413f11aef9463f19d37b998bdc9766ee2. 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/ARF412100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4553d23676541e65d8b6c61cf5adf963a5b656ffb9d69dce63a603b1edd1b7. 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/ARF412100266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725aeb2554f289eda0af5398d9bf5c2a8ee8f0f65eb5b16a7303148921f29c68. 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/ARF411900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59c4dac36e3891b68a5728d49b740a2b1398427a5f1d7072931cf41545e47a9. 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/ARF412100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b629e9881e27debebdebf011408ee81980d58edead1ed55c773cbd7db38d9e. 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/ARF412100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30007a262b58228b6c5b0cb9ddc5ae0ea49e66d5abd12215ff0640d310ffb425. 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/ARF412100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6789fcee9f38707c6e67f8742810404beb813f57e4ced97dcaa2650c3de85d70. 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/ARF412100246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340225311c7ecda1f7227c158d61f1065900204a62b7ff0d33ba3a99393f0317. 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/ARF412100183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cce59b3d6b71d43eb23dadf1c7fa61bc5d7c72c541ccde540952fcd0b67b2c. 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/ARF412100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8287f9680347327eecec2a3f22f55a56d9045295bfeb65d1c6f5522893d2954a. 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/ARF412100198.
Vintage Café: Lounge and Jazz Blends (Special Selection), Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af32054b142bd6c8ff0551b562929e73a6dbc14c8dfa8bb916afdaf4a1e1e91. 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/ARF411900293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bc1c724d492fb3dadc770edf039aa10426ffa93e162a92bb845ee79399e670. 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/ARF411900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d4519ad198969fd40522177f648093425d648e44b433ed029fa77cf228be0f. 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/ARF411900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a50d5ca86bc921d670cb6d82bf5217265f13893d6e71c1fa8ff28a4c9d88069. 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/ARF411900292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c48fa076620e7770e18eabcbb2926cf18a6d4487347e17c15627fa595f3d0b9. 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/ARF411900295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988272c6dc99ee28be58cad6d6e84ad451b4374a994966e3e721be1ffb65f162. Chain 2 (Bitcoin): anchored in block 957013 (2026-07-07T08:31:11Z), 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/ARF411900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e08b1becbebbcf165871a1e9f0973777dfa7afc2a2111b0e2d7bd6766c1ec0. 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/ARF411900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cabcfe9d45d4ec618b25cca6a01370708c5dc39515cc3a51dcfc92671bac5f1. 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/ARF411900296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66292cfc28fdb135bd5cd852df0202f55cfa51958f562a51843ba394915a2518. 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/ARF411900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada9a930f085d4fb4078171f40f8393d5bad3dd14dbeff851bffef2cba8086f. 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/ARF411900290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f17243b9dc363d6276adec2d186f40222693fe7f0b77cb64d40131d4f758bf. 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/ARF411999067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725aeb2554f289eda0af5398d9bf5c2a8ee8f0f65eb5b16a7303148921f29c68. 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/ARF411900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d41c0a86312c090310296925ee5c004e5c09a10908c4b35824bb8e00b994689. 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/ARF411900201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e8f8845825b982f8a61c696172d33703feaa63cc18ab668001bd5373360a95. 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/ARF411900151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff14ca1f220e05fcd84d1bbeb764bdff547233afee5a4d0b814debf3b8538182. 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/ARF411900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44f6b3ac2c3e96b1f77458d39d6f2c3c0340f7d1d04a476e25db3ee22cca494. 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/ARF411900153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f39d5222f18620ef2c53192d4c569de8f6da2b10353b18c28748d5a6564d865. 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/ARF411900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2ae68a4a8ff050300d7d92762e157379eb4a3335e3ae8896139ea1b773aaa. 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/ARF411900289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd900c0c4555d73c5c2381ddd4e1b5beb537cd472e53bcf60a4cd6593d0fa9947. 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/ARF411900160.