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 0x0340acd3c831092b95ebbc95ad5789b6f2b7ee8e492a8e3fdeb206c1558b0562. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c71c0a13-719f-42b2-a2ba-5e9b4a31330b.json and https://artists.proofprofile.net/proofs/artist/c71c0a13-719f-42b2-a2ba-5e9b4a31330b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vocal e Instrumental Sus Violines y Su Voz
Metropolitan Presents Viper'smega Mix Vol. 1
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 0x14fb2729524dac23c625497a554978667f253ee9e5da4d3d847522b8767f28f8. 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/US37B0603157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1820a2d1f489ae246bedbc1a10246d047419a8eb89eeebef14c5ebeaacae530c. 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/US37B0603158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f9f555ded0205c9108afa4e8a71d763f5a91575dfd0e8615220dc23ae767f2. 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/US37B0603160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b324372832d42536d94e2881df5dde8804920cdb2bcb21526921c83f4e9341. 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/US37B0603161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a9b3856b4afe51d8fc7a407033e0db1943310d824aec8541b72105453af133. 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/US37B0603162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2977a6038e933e94aea05edf4b200f5f6d51352f1d037d422724a50f7dc3b9a. 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/US37B0603166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60849c554f22dbe81d9038c368d0415c6e1f6196bb95b4e12bc1bbb97012c5aa. 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/US37B0603167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddce1438da752ac1c30dc0699990e50b40137692ea6216594bfd4a600fb2206. 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/US37B0603169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d282a79a14520beeab89c60ccb990b7e9aea96b7a3a4cefa01e8ffb88511299. 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/US37B0603172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e98675db00849e53350ee77160af0a8615f47773f81058986ea877356c5de2f. 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/US37B0603173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5a0263a490bf3bea0c588248425bc24f827ab4cc01af5331fa59ef55869eed2. 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/US37B0603174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0b5c9d8c13860d518dd403d73352eb74d74fd30c7fbf3c90a43f383625acff. 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/US37B0603175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2378281dc63498a9b072ba6a3fb93fe3d8b85b81f0ae7a3bbacf716ec1a8421f. 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/US37B0603181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2022f13e2da306d2d3bdb0c1c0aa7099b4bbe16c3f05e3512f68076a0b1da07d. 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/US37B0603184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf421a1bf067fa731a8e7c1fb52b87b448761fc3e0429c64257e08b12b35f40ce. 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/US37B0603185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8706a10d6cfd31733f41026312ceee2bf01188f79caa9efd66deee73841f216. 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/US37B0601914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a731770060a2c18800f82f48fd7e15751e5118b783faec426d265bcd36d1477. 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/US37B0601917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x818045e32c6672ce2c0a51272d3e9aa872824767f03d25f24cad9d32685f595a. 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/US37B0601918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee39d4c8ee86d094507b3bf623fef4ba629b9a89f8f31061755b633adb738e7b. 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/US37B0601919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7957511e00ac105a9707eff1ab3a05784cb51468779ea9a2acca8480a0dd02b6. 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/US37B0601920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf22b96c903668cabb25802406a3cacc936ef20a43438fe720ca69bba4be8c0b. 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/US37B0601921.