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 0x287a6e01c488335d7094a6eae2ecf33e29c170470e9cf5a77467bd900cebd139. 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/73d292d2-32e5-4410-bba9-761329fb2d8f.json and https://artists.proofprofile.net/proofs/artist/73d292d2-32e5-4410-bba9-761329fb2d8f.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 0xc4caafe32343a0b9273a06e77fe9a3f4281905d8c39cec3671971e296a99d03a. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SE6XW2159434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940bb8fe201acb6681bdb1f8e4bccd24809750cc63a95fe8853daefd7e1c0070. 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/SE6XY2137321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6188d43d9b69188464a8679a31b990fea126fcd085f0b6c0527a25ce9146ccc3. 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/SE6XY2137322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c5e51af3301b994336f53c1135030cc4b3f0e6962d36b91f735adb66aa8f45. 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/SE6XY2137323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3f1131f34c53c4a64e677bb09f95b8eb09248d1925959a8355491a0f4ce15. 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/SE6XY2100615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711579722269a68dbbcfe860f22e21393906f14aef6f6a26f692a73caed46391. 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/SE6XY2137328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc376f413cb9ef1d4733cd845394bf8574101fca89c5e720e0a3df71e8f38f2a2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6XY2137329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18aba2bd08613760a93400b21007b04a587d06c12a8be6b8667272bed16d50cf. 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/SE6SA2020535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2cb0702b9df512dab4f0d0c3225778a705ca2fc110ac582c7073a250f35d17. 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/SE6SA2020538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bedbe6ffee1eaa4c0ef62a2342e584f2c5eb7ebceeb5215c286567a9448373. 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/SE6SA2020542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf6a6f37cc1fabaa22bf221ed9363c73ed96a4ab55e1752b9b5b0875b8ffb95. 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/QZFZ42472819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f52384daf4d11aac6bf38a210234d68777dc216b209da2febea1ab98435f73. 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/QZWFJ2317051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2f822a2086708450a1ef4e2aeac6043e82eaf96b081f0b1be30bf06267e428. 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/US83Z2327427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fbadb9a4a7090250a73a4b4ea1d75b523e4bbe09a9f6efe6a1e08d76b203c0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/US83Z2327428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c2a6036291a24593dec7330a930d34f641f53c259bbcdacac95db43416084d. 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/QZTAX2218692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a847a032bd24f57fa5162f78544721fb47ca6e11d4185000600aeb8fafb3f5. 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/QZTAX2218693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81ef680d1bcf0294a264e5c3c7cfafb7929d72ae345d09b3d222dab26f6028a. 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/QZFZ32225817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ebc0d0fb510a05d65ab317c33c7bf16808d41bb68857a9e77603bf5087d24c. 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/QZFZ32225818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c1e56714819ff559543eb4c7498ccb41ce982437749f909738a53fea15f902. 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/QZFZ32225819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4caafe32343a0b9273a06e77fe9a3f4281905d8c39cec3671971e296a99d03a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE6XW2159434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab62200f23cb17ed7037ed9764a589a1af00a6f79b1e240b24a70eddc4ffa572. 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/SE6QE2161019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b79a8857aa8370b4da8fa3f06b66ece883f75135f046d428c196923cc816ba. 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/SE6QE2161016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95a76138dfbf411a2acb0c6d2f9d5aa3032d65c411ea43a5daf46e9476a5f7a. 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/SE6QE2161017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8967ee77dee172d870385a7e3172c95dc66de1d09bbe6bb880f962664447acd1. 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/SE6QE2161015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaf29fe4222c47910636f8c9e234c153261dc916245fa4b66b937dee95ed7ca. 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/QZHN42153530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf0d5e02f1030ab7b34a37858ce30c61e4d5c110b754254f0595c63b013543c. 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/QM8DG2175635.