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 0xc2ef9e64c8e5e63dfc53a0430c7513fd6d5dcdd248f9c131d58a4d6319923132. 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/53def2c0-3db4-4c64-b547-281dcf14ba77.json and https://artists.proofprofile.net/proofs/artist/53def2c0-3db4-4c64-b547-281dcf14ba77.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 0x5590cba9656017a104aafe8b51f4318404ff82f76cdd106756a1b9318b758057. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZES62276519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ecf29ed7d75c7b027403e616b814891cfb00f96460227300f757e2d6c794ed. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZHN62253660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4cca06a1689fe229a0f9799260127a4989f55305358750e9ec20115d831e0d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNB2280097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09fa02f62d56db4a80a9d8ab919360445869eb17b9e4fcae8c463af902f6617. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/QZTAW2289486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9321cc2cd6e2afe0648d62f405b1ee4267f04ed81f976ca69b889cf64716fc4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTAZ2205153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae5667ce5bb9c50a72ef079571ad4b2aecd077a2cca0d53ac0db6dee9a6db8f. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:56:55Z), 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/QZFYX2326430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fca16c577447dedf8b485e02b62f9f63b7ec08da858ce0074a8b6735b58f36. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZFYX2326431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b5945d960ef21b46ab9e2d513f56b633f8665cef53dea42bc5c2c9e27f3471. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZDA52383963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7388cea14ff06d818af386e7458dc706e7c9dc99bcb8f3a27e87db6c79af1b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:22Z), 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/QZHN62369521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02027e4de84759f7e1ce250a20da842ba862c264dd695b7d10cf980c28c4e684. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6K2325316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6195b221d0d4042f43ff8253c1e7243c6cb9bae09b8e40613baaae902b4c7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNWQ2368979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9129722f0ac6eae43736fc615a0256a5ae518064c4f9a94143c483998abf338b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTAW2310936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25fc70dbc6845794233c3a0b0694c6508cf867ed8b8cde3c8d95cf378e2a0e1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:09Z), 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/QZTAW2310938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5841bb050738d756cf796f8f77c23c52f11d445083e5393c086fe501ca7e7b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTAW2310939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753dd079d72b925017336f36285ac6b6c881c1e519ad6cb5920d90cd559fdc1a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTAW2310940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a52a04b7a35fcb2cc2a20982996f0ad2d209a85a4e89e3c38411414213a6291. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:39Z), 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/QZTAW2310941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026151d8424e2d175cc4ca59317266fca9121decef78a433e955613df4d7c336. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTAW2310942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5188b4cc298cf2c049270c54d4c30b30badbed01e26a51c75836b1b5cbbb2e24. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTB62368689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f6f0fd80e4b9f0a52bb2c19384a6a0751eeee3fe55feb3e7729bd1da3a2fa3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTBD2304420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95307d60ea7db0f105bf438030610ba051ce72a8957c249a80bd905b091da948. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZWFH2360891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92134bd48cee22d4399004c1ace3e083bb4a17d5536c7c3132f7747e803ad95. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZWFH2360892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb28bbf137bd246ff8a0cbc3c24376dc9c00dc67641649542f4b9078b7430ae3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:08:36Z), 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/QZWFM2385496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c19a5963f6f1e725470efd80d4383bc8f5543da4880d1a044ebabae392020f9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:43:39Z), 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/QZFYY2466952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fa7c127f3084d846208a082a6e12d392de75629861e2275a5b1577ab32cb77. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZK6Q2432184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4320354f90d0f3dd6ab36774fb28a5754a417c13679e54b591286416af5d18. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWS2408677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fe327ac82f2e7c91955a9814f4f96a7c07f7009752f874703c7e47fe08cf99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWX2483175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14858e35fe243425bd96007c0cbe2b59ea67bcb0d7462dcde10828f51ec68e06. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZTAT2445404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cdcba8a700c8949344bbb5d321bc8144d83fd49a76a5b2c56a2fd787d417ae. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:13Z), 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/QZTAT2445405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7dfc0cfa66ff2addae0f7f49f78a1c6d2082fa0536aaefaa6a4951a7801046. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAT2445406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62e493f894a0ab2df9f57e90ac4c626fc325df1b0a38c10e0b81cab788877b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTAT2445407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x919e6a295c30eb6cac5b340f72ed112e07d668f4e2c54e5317806bbd5aa02f20. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZWFF2470492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8d81218a00830a540cb33cc4393cbc20963d790559a8aa20580b7bc0d53cb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA42575436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf19d7d9ba96b639c96ab017bcb5a5cde26716fd79623e2eff6742bbe89fbee3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZDA42575438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810d5e1bc46e9b1e02b1dccf1c66452ac306fb55cb16f36db72686354b25032d. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA42575439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f95f000ba3647cc2b84afcbf371da9928fd0df41331efcccf3aee8db1b5c062. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA42575440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd34003acafbb359ea8f68d057039cc2a476c69209bf255f6c74c31bcd3e50a5. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZDA42575441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2728983d2b7a21a4fc15b51b5889392b463ec19b670ac22aa4a967decad77ce. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA42575442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7ebe97d2bbc76a8fd7af0875702fc749f94808bceabfb52df2d30d0c0e807d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZWFT2584286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9747d973ee76bb74f37052ec36b498f9c28b86126fe5ca368840ada6619a2a2a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:15Z), 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/QZZ772527941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54add6d2042a0d3edecc6dbb9de662debe1de4cbd830b8079db88a1f24084fc2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7V2575089.