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 0xdf60d9f3cdebd17040b55543497ba250943987ce8f6636df56983a9b679f047b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2c3fefca-d00e-4629-88c2-6531ce05f1f7.json and https://artists.proofprofile.net/proofs/artist/2c3fefca-d00e-4629-88c2-6531ce05f1f7.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 0xaefaca0da9761d786e926dbadec2f1105b9e658c1fef307839d93d9202009c54. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USHM80821956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87e18c0a457507c4de5db18aad3aadc1a71fc09af7cd069bff313fdd3d2f610. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM80821957.
I Don't Want You, I Don't Need You Anymore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5880fbd428014f31be16c46f4e0058f29fde707855adbecf7c438aeadf36c2a4. 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/USHM80821958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536fef88e4051541b85632ae9c2820e95c484bc3e264094e528ee1da0b952cbe. 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/USHM80821960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57226cc4a9671254ae34f00809e7630570b7012a266ca22ed7c41a11af9a90b5. 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/USHM80821961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc055b9d71c2e4b1fc8a3a16e97c9fa6e676b689af1ee328f7fa00dc2b5d459b0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USX9P1050057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8137b86b3af64f5c79af51c407938099af55a714c7f73dabb61c3000c2b55373. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USX9P1050063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e624e15899803dbdce7530d6c3b034ae0d59bad493474691329394a87ddac0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USHM21257429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e51b0a54dc69a9b61b441a45e32cbaa14ee96561488294bf811ff968f469d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USHM21257430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa023f6fa15be9e305f772bad9b9f0c952e119aa2a5ae562d60030200baef404b. 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/USCGH1470350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa832ab15cb0ea8b77fa02ba42638f5e19a887f82b37f05861a9cf55f9052d6fc. 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/ES71G1870524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23786c91b5d2ec30101a56ccdf970005a3570fe9ce69cff0fbe65ed64fe2a5f. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ES71G1870526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6143cf9138644219776b42e4c15d9a4e230729e1bdb9da846872c7f460c6b2. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ES71G1870532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19259707706e2405f308f184b3d408767c4d1e427b34ba7461e9236ae2d6bb4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ES71G1870533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4daae274e244d48bab65029adece5a9a24b5b1ba3f7e3e47b279a3190812e41a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USHM21438590.