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 0x66c6bcb330a40f953f97c33129751f0ee97cb86b1d8abd435a7548b91eb40d63. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15de84c0-afbe-4c38-bef3-fe59733c84c3.json and https://artists.proofprofile.net/proofs/artist/15de84c0-afbe-4c38-bef3-fe59733c84c3.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 0xaa7797be56d62ccab2627071b98d13ae0d0becf7425c8074f260c6c4602f740f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHZ62261141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe744f4620ca0fbdf548428b2721159be187a6c80e9b6ff734eec67e1a7d86963. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHZ62261144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004c435f869c4cfedc8efd3468b95f6d7e158450c0fd62c62ce87f27e29aca53. 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/QZHZ62261146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dbedf45c6789efbfec4bef065ad1d1b5ee97c984e1a4d8dbcf059e391d7a06. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJY2265513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eaa158bacf3b9e691a98895e8f36b1f68192788637a0974e7d5a93f9f65207. 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/US7VG2382790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b85a5069b53313de2c1739fb6f5e63fef8c8930312fb42b9390d980ea5b39b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJZ2355419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6af77ec747af57037d28145444a5b8913924054016237227b9aad7d17112280. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/QZTPX2345698.
En Navidad Teo Le Canta al Oriente Venezolano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129a3c3ce533f6d25480fbb3ab5a150674553d4867fe299868b73bdd99bec46. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNJX2478217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa763887af1204ba5a2fa9e3b67b0f234d5e257a8eab69c5692f1b53551eb142c. 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/QZW9L2459318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6831e4f0d9963df697d1f75deab00778e28dc735d1c572e457be5152b8d1820. 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/QZGLM2541455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5701b5b12b27670af396f8ca5fb13f7922805de48faf1942a7bbeb9363b391a9. 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/QZGLS2529403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37dfa389ec22764f06f239002ef5937128f88bc13ebfce9673b2d99f5e411076. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZGLS2529404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916b4e303400b78e588fea1cd51b566e11d86752833778575fdb9808eb043f16. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:27:24Z), 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/QZGLS2529405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3800e657fd870c64f78da9eafece5aecdf1a58ecd02b0d36943e151057806220. 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/QZGLS2529406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b496574c2e976ee671bc57da0a7632e8b235787828defebf15b32ec8f4c06f. 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/QZGLS2529408.