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 0xd33204b7121a910da391ef43da5ae02a6370c042cdd375006afd60cc5e2e419b. 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/34958676-f9c6-4ae0-822a-ec93bebf7971.json and https://artists.proofprofile.net/proofs/artist/34958676-f9c6-4ae0-822a-ec93bebf7971.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 0xdf3b703fa70af6052f6311a989dbb3a70730013c92c8b94879c1151090d62440. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/BRACT1606883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a0b99554b83e4a289d3353cda1953e306cb6ae8f086a09124773bbe1e296e. 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/BRACT1607336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71adf265b977065a802c6b0e4f34ef8d795d2e887dac16f42fcf676910cc6282. 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/BRACT1607234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa048a0dcee5d8d9912038316c761b23f9092ae733ff88582e2f735e3bd266eb8. 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/BRACT1607236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978c6040a8366f503d85168f0e2cff20abca2f70ca5e84d7dd006062d6e78df7. 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/BRACT1607239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd687f4afcce9c34eae5e526d0553e0d7b068f5c587d1c37e15ca04d969830bb. 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/BRACT1607244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e54ceffe697941664f8c83dfae7ef5ee9118b053331550c168e54d7b9369ccd. 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/BRACT1606169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd56872ad9448dd4c0c18f095fac35a8aff99c346f9f0ec38d91c262d4912dd9. 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/BRACT1606175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8942fed076d06858b58d66845f620cba817874927d0e820652b6db91adc5b9. 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/BRACT0400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a77a26a575f0feb85e518a542a7d8a5b67801e257867de62d94f295c0da0697. 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/BRACT0400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b51a63d05a488b963bcbbfc8f0b66c5e9e7ebb686ec6d26a26f54d6daf9555. 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/BRACT0400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46b379fd66bfaa9a3c273d5d5c5a1931446a2aa9c3de6323a78580e56e5e38c. 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/BRACT0400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcff9dc6ced725cd802dfb88b3899bb1ce3df50726fe2e3e45c87642593cec0. 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/BRACT0400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9620ba73e943da27f7d153a1209255e925d18ce65238b79d95ae3d4174af0476. 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/BRACT0400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9db365d4f2076f75279e79a4b0975847f9b40e3d1d3e0dd9ef81cc0fd5432d. 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/BRACT0400193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033e21876551903c5657ad96cf1a50d1f2f83f99dfecce17ab89fa68f3a074c5. 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/BRACT0600579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0587f1cb6acf7e51b351e7e852e32c9b724db321aa45b9d1c59cb2eac69b48ae. 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/BRACT0600581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aeda05aa6e32004af2412625ff578d7814a1d1679282ffe104f7a9248f3d5b. 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/BRACT0600582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d6f146486f73c9a02c5f400429653cc02e791ab82fcd297a601b12cff2b2ea. 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/BRACT0600586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c50202a3dfe21441eb028af972b42354c618eb33dc0a4474811b8a22b3271a. 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/BRACT1605818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76243041dd6b70db56b54543f8b2b6bb55fe5cbe2aa62dae00f54b6207d52aa. 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/BRACT1605822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda00c2a15aca8c84a413a5af918fe3eb62878a6a03064a6631b7e5feea477bc. 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/BRACT1605823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4015a785be580561d5e35817d6df97f09fc98e48ba680c868751088bf184889. 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/BRACT1605824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46f72b3441f8defa97d87712dde6aa770ab7c50a8337cb66cbca1c3b1c621b3. 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/BRACT1606827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c9aefe1d51bee0d06d43ccac4313ccc562594acc6a45297779dfe909471a2b. 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/BRACT1606828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18643b1397b810a45abcbaba5abd73ac8bf499f218eccc33784ba75cdadaf59. 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/BRACT1606831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc526b23bf207979e159f8dc6b863689b4b4323be338ee06b1471bc9849c2b7. 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/BRACT1606842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42683dec5c732b1b493b0021fd971ef0454adacf9d0ae6671ae12df4a92c3b3. 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/BRACT0301080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703578d5c3bcedfb383fea2c3e31fba7990471ea105a3ddefc6236184b5a734d. 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/BRACT0500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e33fa4a73ce845d36c56a08fa645fc1a789c07882884d5d800ea7f8cd2a0127. 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/BRACT1605531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3a0984b02749a4dcb1d67065b5fcbcf28c6079b428d2cc19dc1f3776dd1118. 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/BRACT1605536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0b9065c0247a3c3c1f6bc48dc9f493f8c06fcd0f91790b7c9ea3e44994092f. 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/BRACT0701204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be1424a7f631542c91cf2811309de86a9dab9f181b817e9efd2cb9688a14eb2. 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/BRACT1200147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc359bb46341b4d2c7e43caa7b4e2f571ac1ddb4e6109dbb3d90d58a3e9a1bc2. 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/BRACT1200150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e03c6ca1a99bdea3ac3eb440ab63343efc184f577e9bb1c7fe05875d07ee106. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRACT0400493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8942fed076d06858b58d66845f620cba817874927d0e820652b6db91adc5b9. 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/BRACT0400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e9039c5979858b6c1feeb06830517707a45b21136d6006f04864b9d1f8f142. 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/BRACT1603385.