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 0x742b4fadd843cd30138f620ed4bf07d13e2ced1da0b42eac725708ea8a540770. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c99075d7-c4d3-46ec-ab4b-2f69036eb8b2.json and https://artists.proofprofile.net/proofs/artist/c99075d7-c4d3-46ec-ab4b-2f69036eb8b2.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 0xe066729e972745e67c2121d76d203b61f380c534bac02c0310bf196d2b4ff371. 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/QZK6K2397565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc635b80cb4ea99eae110f0680d3ce2b02bde2e21f84e5488bb21d109d0d64228. 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/QZES62254866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c01ff077202a02d4c43b9865f8e9d097bcbf1ccd6dff0dcb82395f47d09293. 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/QZDA62261767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2867bff5e508abacd3647aec117a75c2e4bfdc94a9208b82d4aba8c1a366d3e. 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/QZHN72237440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c78ada2bbaae24fca5769d87a4899615f061f15723cc941143d7ad01c817a9f. 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/QZDA62329385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4e51f70da9e2c7361dc490dcd1e4e3691044297eaa9e6f130a20573daf407b. 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/QZTB62274206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b03d918af4adc6dd44d2c2a090641b1387984a78a154ea4fc23a9e9b2e78b1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZTB62274207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca097be8a568dca5400774a8afbe7ad2f9246f23f6a7e847af1f5443696b5b3. 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/QZK6M2106843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf570f447035162304f3cb0d3637179c0450e41e8316cafdad35d501e515d756b. 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/QZPLR2173969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5280a18eeabc341ec4f4daba371f89e56117bb39e3b3138d0a9b5e5885e01aa7. 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/QZFZ31930840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f863ed47dd42c978058d9db5a1ebef84549efd1751da569991931e711d40c1e. 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/QZNWX2002790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f06a04d96bbc1d1274f6f3db08fbf672be74476f8f6a9317088ad00513ccb4. 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/QZFYZ2087811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d9c6c981b4ccdddbf45d4118b1d81f635fab16a0de5ec5a5b7158bc67aaffa. 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/QZHN41989061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991187cc795388ebd7466862b77419f9b06fb2252ee7684e1584d8b1ae4069b8. 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/QZHN91984777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f76882f943bb8bdbe29cf72bb34ada6c1df6296840fa8435e83c257879db6e. 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/QM2PV1836958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1c81bb1900b0c20e03f43b1e0b9664afe7c29b0d336f87455f458c048cd756. 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/QM2PV1836959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782f8bda6bccc1b28f5c09425b3ca52905007c0c39938037aed7c005693a952c. 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/QZ22B1748571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8d57b3581d94276ea962c8bcc2ca68a3de9081f9bc4b4b2f1afa6e9400396e. 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/QZTAZ2313443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7b2d3095129e384ee9326890cea9c2e4ae5b911f8189c9b79c3b40b64651ef. 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/QZNWY2341749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59f1aae2391fb70fc0507ce9ebb1e181e99b9243030f9136afd675041562708. 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/QZMEN2390739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd1775bf2b91dc643a15fe13e2938a3bd6074ddae430c3bf57410c9b44e3431. 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/QZHNB2376842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464d98d4125ea1e0885723c3fdb8466a09c395f3f80501e82cec154f55791aca. 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/QZMWW2310230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a97abce5d3708abc23790b369de503380a5b99611b33dfbab24a568cee1d2b. 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/QZES52326271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c78ada2bbaae24fca5769d87a4899615f061f15723cc941143d7ad01c817a9f. 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/QZDA62329385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc210ecb1b7f98f328282a2c725babbf330aec0af2ea12f54953f0b4614eb5f. 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/QZMER2273127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448f4d5cc5d2b077d5fb8ba5e332034d94b11cfc703908b5eceee524e3a82711. 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/QZES52236114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc635b80cb4ea99eae110f0680d3ce2b02bde2e21f84e5488bb21d109d0d64228. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:32:17Z), 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/QZES62254866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c01ff077202a02d4c43b9865f8e9d097bcbf1ccd6dff0dcb82395f47d09293. 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/QZDA62261767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4ea9ac7dda3ca8385556a5d84c8a171fe549418acfad43255c699b97b74a3c. 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/QZTAU2124879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6fd1a26cbce9a5bcd9540007a3f3897925b0f8f3eae807445a1ff4772a2bc0. 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/QZFYX2252098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f036c01b9dfae3b7522dd46d5cf6645af8152bcdfb6629af897d6b66c419b60. 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/QZTAU2126356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f036c01b9dfae3b7522dd46d5cf6645af8152bcdfb6629af897d6b66c419b60. 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/QZTAU2126356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4ea9ac7dda3ca8385556a5d84c8a171fe549418acfad43255c699b97b74a3c. 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/QZTAU2124879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff5beee06f0c028a1514ebabbb1d63f60bd4127f8810d2461775ded5251978c. 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/QZDA62438663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f79eb31003c8cf98210bbdd483835eb885c0336c76dfc3aacc47a17dfd252f. 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/QZNWS2443145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6920818b6442855aa8491af094e39b927d7c4eb4cebbe823a691ee1d230d32. 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/QZHNA2450018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909f01da26404edb15fce61344169685f4cf37aa978b4d61574705cfcc0a90dc. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZES81816817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d7f87a3b313cdc9adf335e23851e14a30f3eb918bc5a81debdbd7b64eb0912. 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/QZTAY2332771.