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 0x42ca4cd0a4ed0638f65f3d9ecfa0af521b4d4e7fdfbfc2143a29396d11ec5df0. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8e74e87-0c2d-4242-970c-3e847480c8c6.json and https://artists.proofprofile.net/proofs/artist/a8e74e87-0c2d-4242-970c-3e847480c8c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ang Aking Pag Ibig - Mikko Apolinar ft. Dave Carlos (Katha)
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 0x7ce1c40f934b309dfc63e235268307b979571d5bd40094b848d898d9cfe06b72. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:25:47Z), 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/QZDA52302399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2838c48b6d8cbf7a114d9e590272765549c1f96520ee8ccda76692557cf3b8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA52302406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83650f56a8a5261df794b07742736cc71b44fa722ea249f65eed42205856dad2. 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/QZNWW2358070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed71e02a6a02f2fac9e97d64b68ce0590c3e7f6a731ef047bd6e4f187f1007cb. 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/QZPLS2390717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ebc2476e750d986db3d5fc6628db918479ba5aa10c182249e8f26638769f8d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:34:38Z), 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/QZRP52348703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd06bcbe7e61245d665b4f21aa4cb3bf361e7c4edb279ee462cf29080be323f. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZTAW2329480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda05b4ecb2987e9a8d555760a8eae4cd9cce5e14e1f463b0de5224c0a8b152b6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTB82374338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67791359aa6628ac27aa8b9cbfc3c2ca785b60facd3df44703d3645cb717233. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZTBE2358106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a278e40918f2e9c0739a545dc9dbcbd048418e614ae31c7b014ac732a019807. 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/QZWFF2360972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b978f2a542f76f30986a075e27dd51e3536518d1af934e50a995929e6772d2. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZFZ42421977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf2518d5aedeaaa3f4dc9fa0a466917fd85cc82ed56ce813e5df925dbd87466. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:41Z), 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/QZHNA2456944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805592964050ac6bdd035aafaf45be3caf62785e40716370109d52059e636096. 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/QZK6Q2458633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c3412728feff5941973c3e9abb400594ab92d534e4e0a7a1d356a736bf6076. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:41Z), 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/QZK6J2412945.
Your Song (Jenzen, Dave, Liam, Carl, Fern)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281d9514b7d0f60ccaf59390cdf934db9a9543984b9277d28f039640cfd39b37. 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/QZRP42413566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307bf4893f7989cb48f32b787a74884f48188b77274333b01117ae6470577952. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/CA5KR2486430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2085030f8bc7484adc2cf5543b4722eb746984d9eb8162467f650baf07a1b02d. 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/GXF9Q2429381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c04ac1ef112feaad17ba55bf93fb0795203eb1a1912399e1c0d001d90abbe2. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GXF9Q2429384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3842055e2319beb71fbddaf2693ac33e1a67a9b79d061be9624d7035cd3b1886. 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/GXF9Q2435873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a0032fa630966d2e9c7b25dc15bf0759409066b030d1d060acd371bb697a82. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTAT2551753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23256e7d37c4f92fe85f0eb6cc9c7e2bf595027a28049080db378acc54438293. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFW2512107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf243dc3c62f44d47bf4401ef431ad706ae5dbc95322716d5c9a8e6b98e1dd238. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3EZ2563172.