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 0x76bd84bdf219a70b1cd497c2ba1a4db6dd9596780be29bbf3a2957a3a9b5c039. 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/0051eef8-bd9c-4744-a0d1-7faa20a02fdd.json and https://artists.proofprofile.net/proofs/artist/0051eef8-bd9c-4744-a0d1-7faa20a02fdd.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 0xb8d44a9f9c9741b8ef2442bcc1bd10f57a2b6211c51915e96e8d14c753475a8c. 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/TCADK1893505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4ad027b530c1d94fe042612a44d2b9a312500efe83fe07a77fce6cbdddc3ff. 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/TCADK1893508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd98e747c1bdf1e42a652949972e0dca09756df1702dc4c29cd9d8ab12c7aad. 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/TCADK1893517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436cb08eb8b6d7cf5a196e9763df9edf680c9900818aed5a98bb72d018cfeefa. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCADK1893528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ff50a2c87f15625e8846466a3e921333b79eb8cbee5cce512f520a63c342fd. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USX9P0732064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a243c6ed1889c3a3cc60ff2aea6ec256109745a1f6acf483499a70ccdf927d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USX9P0732066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04063859d00187bbba4436792422e3efbbd565b6675ca71194a6f1c55de36546. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USX9P0732067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442ed6d7a8e93b3adfe2640d7f8ee1c77bc55b776b81bbee5691e78e5be81786. 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/USHM21560112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbd76c4adda4adb71cf5989d2227f2705a8bc2aea9879131ea8d727816509ed. 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/USHM21560114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44deaafe5a4eb88872a65a90382f58e9ebb767f200d29351484139d9e7b01fda. 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/USHM21560118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b1a2193ba80d098ce446079e92f5edd161c47e97f021b8b33a34303a369aa7. 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/USHM21560121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9f79518a0b9a1234ffe7197816535f8989b937e491240078e9bc0f11ab1e79. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM21560124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba07488212b31c1548ff1b033c132c60a2a2a9f8650f8674267a659df14a8ebf. 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/USHM21560126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c0c5f8b3c58d5eee4920a67898c47b3b2d8ce2b23c86f72bbfadabfeb14bbe. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:42:06Z), 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/USHM21907917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352f1dd37d5227fb7a0337c7fe0bf39cc20d9e35414679c8fd962158a418b646. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USHM21907931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55fc40bd713f5db4b1a3b2ac7ccc9c277115042ce62b5170b5047dbd1acec9c6. 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/USCGH2309131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b23d754e6cd0cd0a6a4f9d4298fb568108a6cd7a09e2d52ce135144df74fda. 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/USCGH2309138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd8aedf5cff46b63dffd14e719a12f3387b06cdb6f4e051566fcdd05b7e0f51. 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/QZTAT2380155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb85772fe675f47fcd1066ebc347f356e3dc6c5e335950a21eead89671b9316. 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/QZTGW2403450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab7c6dde43a7d6b663f583fb9985b2b7e38a72894db05a074feb5ad40513a79. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USHM22530792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a932f402ce3e82f9ed71f5e996bb92ef156e6274ad810c42641512ff949be4. 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/USHM22530796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b905765c54ae5d8f2a07f80eb9015d543d14e749e62953dde576023f3b8861. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM22530797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43660e3d6d35ae462ea308d9af1683a1260f0ab543c1b0ff5a5b5a93258d7f98. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USHM22530798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd61154a36b14b835944b2c88a2b6d839f4dc0abd12c82b14592ec829fc97159. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM22530799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b134cac5bfa1f966ff8d62faf0f165dd795e6dad5f8b6cb1a88c4c930435419. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USHM22530800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800cd44cd470d85079a34879bbbd86d9cddf7b283f884aa21eb040b12a76a885. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USHM22530801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc27645d012a9325f2f9731ba278b49731ed2ee8788d5e7bea17aad560e1cfc0. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM22530803.
Alley: The Return of the Ying Yang Twins
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14b82066f9e433303c280cbb69cfa0061ac3301a0d2ca0780ce3d7fd4f25a34. 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/USW9J1000111.