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 0xcd2468d421dd6779d5f0cee6a70c02f7755117a37bbf3ddda27f56690195a0b6. 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/20f027df-c191-4116-a047-cd8a45608315.json and https://artists.proofprofile.net/proofs/artist/20f027df-c191-4116-a047-cd8a45608315.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 0x18517a59063ae71968bdc98aaddbabf0696df0d863afc7ede20d41448ce4e310. 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/MYSM19310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f308ccf1e447c2ed7090cada9d0c382381fe780d79413c6d8305e72d290270e. 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/MYBM10200656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979f24bed93c539ef69f68f9298bed0c5290915feaba60b54a69a053ca26d81d. 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/MYSM19010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3157411f93ff3d28d9dbab0695218404ba722b49aa1a8701c6d4b60d3b27de4b. 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/MYSM19110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425e8720e48d12347b0fb5265da914d28d317a2d6cd36216532f0cacd9a3849. 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/MYSM19900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6b3b9b8006ee7354b01667cc205da81de0e75174bb5a9e582a8ebd9772ac2d. 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/SMMY10600243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d952ea3a44cd9b04cfb018ee5c65c2c5b0db0df55a96d852547d8558baecdb7. 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/MYSM19410012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666e3c03f1a3fff30813b6363e620dc5f0e892f82efb34d84207baab700d3b9b. 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/MYSM19610019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26464844a4566a19712239a3cd656e39a7ba45dd41b081c9db372ee06061970. 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/MYSM19410011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c5f65f3b817e9a2c510658f4c55f8cfb37ef39746012b9bd9136f8484ceaae. 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/MYSM19710027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31752b140160512d9d16ae155eb20f5cbce6f971eec13a8162d118ba6543d408. 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/MYSM10600265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8a421b734739dc3e61326aeca1a384e30059d93e18d68992627f6a5bd28804. 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/MYSM10600290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87ee6dff519a1e85aa11945867c2eb54204a70f80296a48d317fd6cb3263a5. 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/MYSM19610040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d49e401b678ce48db6a0b9d3af32cf07cf0f0f821d9f2c16dc5d9d67ac3386. 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/MYSM10600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18517a59063ae71968bdc98aaddbabf0696df0d863afc7ede20d41448ce4e310. 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/MYSM19310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979f24bed93c539ef69f68f9298bed0c5290915feaba60b54a69a053ca26d81d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYSM19010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3157411f93ff3d28d9dbab0695218404ba722b49aa1a8701c6d4b60d3b27de4b. 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/MYSM19110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d952ea3a44cd9b04cfb018ee5c65c2c5b0db0df55a96d852547d8558baecdb7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MYSM19410012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666e3c03f1a3fff30813b6363e620dc5f0e892f82efb34d84207baab700d3b9b. 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/MYSM19610019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26464844a4566a19712239a3cd656e39a7ba45dd41b081c9db372ee06061970. 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/MYSM19410011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31752b140160512d9d16ae155eb20f5cbce6f971eec13a8162d118ba6543d408. 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/MYSM10600265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8a421b734739dc3e61326aeca1a384e30059d93e18d68992627f6a5bd28804. 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/MYSM10600290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87ee6dff519a1e85aa11945867c2eb54204a70f80296a48d317fd6cb3263a5. 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/MYSM19610040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa425e8720e48d12347b0fb5265da914d28d317a2d6cd36216532f0cacd9a3849. 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/MYSM19900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9789fa48c64efefa43d29be8bc1d275eb4b260e892dff0332b58bb129b439a0. 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/MYSM19900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3157411f93ff3d28d9dbab0695218404ba722b49aa1a8701c6d4b60d3b27de4b. 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/MYSM19110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4d982960296c2c8de7e4a923897340be895384489e4e87ebd21d0a01f8ea09. 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/MYSM19110009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fda7990d24ec92adf9399387390488c75934307a4d790df6027c4d235a53ad. 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/MYSM12100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b34a92dae89ad73b1c7e45539c0fee9d0ebf5735089f960f5c5894e80827ac5. 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/MYSM12100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d87ee6dff519a1e85aa11945867c2eb54204a70f80296a48d317fd6cb3263a5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MYSM19610040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18763adf4a7882567ce26589dd17721999e09c2e42779e724b81bcfdbf748b68. 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/MYSM19110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2874fb39bdf14487a3bf32171282333d76654676791138d2c43490dec8ad53. 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/MYSM12100303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d685b31f364fd72c87631f2a80b5d2be69af9e0afdfa2a234c34eaad4d8fea. 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/MYSM19010001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a3f5245bacd5450729a6ff4d0a7e4dcd8ee652a4353d7f1780e23f88d2a671. 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/MYSM10600301.