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 0x8122a707f939798a3847a241115c2983c33c6364227b6fae7fb87bcd497ad926. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f14619ca-95a9-4181-a43e-0e7d58fecb8f.json and https://artists.proofprofile.net/proofs/artist/f14619ca-95a9-4181-a43e-0e7d58fecb8f.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 0xc16232872a3eff701c12ed7568907162835a9ce1213c8bea411cab341f869c4b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIBAR1300471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbe1126b03a01e5b8b84c3f8fbed7f57e507588e72f38c4bd614f91d57f4395. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/FIMTA9400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0ece5340d8e484bb29112a814294d74eecbde08bad8d86b229243868853ed5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIMTA0800088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be6079befe696e08f19e8563a8bc57512668f5d0cd8edff5a2c8c4a86688f21. 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/FIMTA9200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb28226ab6235c6de05ff780e8e26fee71eefddbcde6ddff1443aace220c6651. 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/FIMTA0400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57ec7ebea5308a3bff03c044b6bb454f84ba276221381a63d6c2bbfdd837f9c. 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/FIMTA8900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c638429b39de94a21746b2fdcc49331d5136b71ea3e0b02ef440be89a39e70. 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/FIMTA0300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca0bf9761aacc5fbd1cec890ba8dc45cc9644095f5e13f7ad21a1db5113e377. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T18:00:39Z), 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/FIMTA0200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd481e295375bf0f505ec9899d3a0de605dd4f09b0a34a3849886c84445428017. 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/FIMTA0400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca28128986bef5203c6c6e2a433d19dde4fb8f92aadf00bb90604a1c3a28bf8f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FIMTA9800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675bd60202629f50028380acde84b0a60190df9c4221e62d4894ac8e03063f2. 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/FIMTA9600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c638429b39de94a21746b2fdcc49331d5136b71ea3e0b02ef440be89a39e70. 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/FIMTA0300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb071a28e31221a79e143b457b6cc30f8faa551e95ccbf52984b78b1c7188b923. 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/FIMTA0900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f77c67de9f530389b55dff79f1729c2b46bd07d9c78e96a2fc4484ecb3b368. 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/FIBAR1100123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb51db819034f297abf63a81e0844ca1aad8e9bb693306efcf100cf673cb449b. 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/FIBAR1100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974997fd5a28b19ae5864c78fcd83bb415fb8bb85da3f54a752665720e19b43f. 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/FIBAR1100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e12d231599f78338177aeef46da453039997f772a7b71650effeb3aa05849ec. 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/FIGRF2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41979d5566085d4d4c8ab9445ee0bf6be5313d8c1681d32b22d3e02e0eb9763. 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/FIYH21400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2347638b7494827cfa81120f6f8bd6fc3a9205d6aadb51951d3f86dfccfc4d19. 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/FISPX1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307fd76f6731dfde4f4a13021b99b667f877e445efddd88cafbee5e60c8e42bd. 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/FIGRF2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124487f72ba9b632b3390d906631940c40077c3e86e5d10aa76f2cc9a3e3363b. 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/FIGRF1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5ace2eab8f5013a58f641f87cc9281f8f09d3531726508d5e96fdbfeb54093. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FIGRF1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748d745484180b90002962bbd8a5a5d32ee1fb39205d9c1e542968140948a39d. 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/FIGRF1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf957ad60652effa66f3e37ef0342d5f8eee62a8c142f15a861102a953a9defc7. 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/FIBAR1200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94696fa565f8fed7fd0bc627c952a5a8ce1b2f7f7a6e3cafa404a269c93d6b79. 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/FIBAR1200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336b8fcb9188993ad4fa743eb6096af4ddb138696969c67e97943146cb2092f5. 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/FIBAR1200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fbc2a3f620139f2cd8fa361cac71345260ff6ee3b23354027765c4e606198e. 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/FIBAR1200064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a11f85b2305cddb6886b8ada52e4cbd71f7578993a417ce9a9ce06cb8a9343. 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/FIBAR1000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4a780a03ed8a1c536996e35b9bb1fd2c2cc09c8254dd10f27e6d31dd005daf. 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/FIBAR1000459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e8514f4fc56338f3e510170d93ea6b9ff3b0ebef3adf148b1acaeec0c96ae. 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/FIJEB2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e12d231599f78338177aeef46da453039997f772a7b71650effeb3aa05849ec. 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/FIGRF2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307fd76f6731dfde4f4a13021b99b667f877e445efddd88cafbee5e60c8e42bd. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FIGRF2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5ace2eab8f5013a58f641f87cc9281f8f09d3531726508d5e96fdbfeb54093. 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/FIGRF1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34314fee0c642634432ab7e1f51f6310807055d5121b7148d06f6e3b27647d58. 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/FIMTA1200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a11f85b2305cddb6886b8ada52e4cbd71f7578993a417ce9a9ce06cb8a9343. 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/FIBAR1000335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2347638b7494827cfa81120f6f8bd6fc3a9205d6aadb51951d3f86dfccfc4d19. 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/FISPX1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42e3ade516439248d1fa29e77497f62ad4926ed2d458d46790012c10093f029. 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/FIMTA1000021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb73fd5b7b34a46aaa32399c679b9c7178cfdf6e0a029c0035e4898f3bfe0366. 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/FIMTA1000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de4f11e22d8b43b042b6f21d583bbdad84ef0b78d7163b8d746a247a12ed52f. 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/FIMTA1000027.