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 0x29b3cd077c07b8651f8ff2c3c2c73667a767f75290106cd1cd4fd6ccce0d4e91. 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/17438594-11f0-4fbd-8188-d081b4c545d9.json and https://artists.proofprofile.net/proofs/artist/17438594-11f0-4fbd-8188-d081b4c545d9.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 0x73beaf7a42ad688aacf5dbd180143d9fb8437dcd06a887246ec26ef6c092cbb2. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWU2185529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad2e4225f7b49437aa88751887df6afb43d261cc2d86a1447d41482dcd761ad. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWU2185508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf7c0a3a3b4aa377936edebbf675e12302dd295908045878fca137b49fb4f1c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNWX2127682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f6e70c6347a223b026960eccc9e7f93c924846b4da0f3f0dff6faf64556251. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZTAU2185928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d0b49eaf465c996b6c4abf1a481b2adf273c99d84f90b1f59aa4e346799f66. 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/QZHN32235003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc7b9a9f0d2506327f5cc632f4a066045860b86819b9225ddd5be888b34dd06. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6H2282758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a54780c453a329786422c029db628f0179076f376936dc96bedd4bd69f7e72. 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/PLC062240675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8faebad90dcf97dee38334fc612ad748e53f0bc24cb9795ec475baab2b269065. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/PLC062363092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12d10f5a1eb31976dd07ec7c2c139af5599aede83980bf53b349d392b0afbd1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLC062365954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0003d1d6deee8903e1366411dd71b410cc5df68515e988fdcdec912f6ace6c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/PLC062377731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386b52348cfb9e9e42cce848ff854d90202e2fc72eb1ef79e10e1fd0737f6258. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLC062384247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2ab34173f9f80c9c142e43d02d6ad368bfe1c6c099cad875e3408379fc2450. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/PLC062390128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e554877f512f37d8483a35fcf2d5ab10b8fb8d94045377c20db51678c9a0d23. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/PLC062393733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e16eef862f9d3d9aa1aca4dae0e13c243712d9f6a60a50fd54142ba8d4b5a86. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/PLC062401995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faffb6c8d288ea42e2717a5554a40902a77f6b6087de8b906fbd0586fe7557e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/PLC062404408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34690e9246b4dfb1dc1e6a3ae2d64082e846f3f9776bd05d9547ab7da049f07. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:00:57Z), 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/PLC062407969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30907c1ea21ba4b27237a0dce6200ac30f3a38fb4309f965d539afde713a1005. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/PLC062411444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7b93ac19aef86d409fbd0555c153e29d8bc3937b8c189f06dbf14f6f4c1eb8. 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/PLC062417238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee99041fa8783f2bb03fa7eb4f73cb4f2929caaac4cb655c362aaf7eb6a3e242. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/PLC062426989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562dd120f211e540859ea71d020f517531ebc8535e29f43316f445182d2ef20d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:51Z), 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/PLC062429850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0353236c8d57d320b1c7c754257d15998e67db60d8f2de0ea422f6dc1ed263fd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLC062437344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63528d84ae1b16296cbfc8b471dacf2250c4969f7cdd531b61322d220ef7af3d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:10Z), 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/PL4K02513640.