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 0x39042465b82b23c5a929f919fde4870e2ea40fc965666c17ee3db991d37db2c2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23b0b20e-212e-4b91-ad3e-e9b1a35f1fa8.json and https://artists.proofprofile.net/proofs/artist/23b0b20e-212e-4b91-ad3e-e9b1a35f1fa8.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 0x33a0c3867ca43cbbadabb596f3042f829cb673887a6eefbb6c783f78a6ed414b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM8E51400648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1665829b3af26b31ef80a3b678afaf7f0ffd0e7469240f675b93586a337ab1. 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/QM8E51400682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b62f71a42033b67069e814e006160eaa022876c4f6ad148622545cb2251b8b9. 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/QM8E51400681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b03ff1b51d137c332923419c5586847c8beeb6fdffdfd83bf38bf94759667c5. 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/QM8E51400685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf634d39ab82c4ec3e4d3b995628a968e4c6be6718650a0ba84d638a17b3a8. 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/QM8E51400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda596231ccce98a61d3a6fc2ac2713a81b467524b6784f304f5fc35afb9f51fa. 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/QM8E51400686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e801125781b65de541bc29c86bb64127678daaf73877a08ff9c837be9f4d3. 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/QMPKX1740667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a95c9d6005ef082f95e451c844d1714b16e553da75ffb0f77c43593b1824a. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZANL1768576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468f69e492ba401f0a10a8221e74999c8dd9d7255163ec2f417e93ec25c93d53. 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/QM8E51400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0c2d90b3c78fccbf626314d038dd576dd54580b004b7e8d8e7a6c2a46675a4. 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/UST8K1778839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffdc46af1d385b906939e749f88ff11750f85e283d83db82af4df1ed4e604e0. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QM8E51400223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36056a06f1f526cf7ae4b0c9b8db76fde08573bcb9e421b46c7e0fbd23411cc3. 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/QM2PV1744192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103695aa2b074ca7d42b8997c365e26152d545d5d3f91743e25526f6734d2909. 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/QM8E51400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9491918cb9910e88812b8e7fcc5f5e41be2f81c71da4a776c515f3e41fa010. 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/QM8E51400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a0c3867ca43cbbadabb596f3042f829cb673887a6eefbb6c783f78a6ed414b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM8E51400648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07cf634d39ab82c4ec3e4d3b995628a968e4c6be6718650a0ba84d638a17b3a8. 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/QM8E51400554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25356a5b980f70a3ad484d6c7780fbb8dadec5aead89cb3a4e190d140922b90. 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/QM8E51400452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8132e9e45ffa579db62b07a856543de34a16b8497687fd0754ef53d4fa5e60b. 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/QM8E51400453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321f013096c9dac6095eae9ef549b5756becc963a1fc35ec3b974432ffe61ed2. 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/QM8E51400534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777c89a8b3fdf2bdce7866e5a79da74640d27bf36409f87b6c790d3b45f7ee86. 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/QM8E51400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee75025625850e0fe67a84772afdd6f5a9fbbe6c1458e8eacad4403b1b808e10. 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/QM8E51400533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8132e9e45ffa579db62b07a856543de34a16b8497687fd0754ef53d4fa5e60b. 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/QM8E51400453.
Can't Stop Your Lovin' – Katzù Oso Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9648183a695abb596f1cd37ffac183c61167f0f9d353ddd83259a303204ab323. 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/QM24S1927667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777c89a8b3fdf2bdce7866e5a79da74640d27bf36409f87b6c790d3b45f7ee86. 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/QM8E51400373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494a95c9d6005ef082f95e451c844d1714b16e553da75ffb0f77c43593b1824a. 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/QZANL1768576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0c2d90b3c78fccbf626314d038dd576dd54580b004b7e8d8e7a6c2a46675a4. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/UST8K1778839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36056a06f1f526cf7ae4b0c9b8db76fde08573bcb9e421b46c7e0fbd23411cc3. 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/QM2PV1744192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4e801125781b65de541bc29c86bb64127678daaf73877a08ff9c837be9f4d3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QMPKX1740667.