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 0x49657d670014ad238c459a650f70f6c7e1ce924a3cdcbb3add1a7fc5f48705fd. 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/5f7f2a5b-d11b-4d76-8bc5-d35e92fdb260.json and https://artists.proofprofile.net/proofs/artist/5f7f2a5b-d11b-4d76-8bc5-d35e92fdb260.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 0x1b25b8c440868abaad68d451db8d8d194e9ec96ca17c2038ba1c6991ad4cadda. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/SE5Q51802396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9139ecbc373cc5543c10f18f8d753ac6346c5af229b5a09698139f40f2837a5. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/SE5Q51817175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe43f05231fa1f1cf21379d7abbcba7997601cf056a109ad44b8878991327161. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:53:14Z), 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/SE5Q51808252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ac63c88783496d154ff0024dff226ad9d7b48d0dcdd8a2ba7639e6e0039d2e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:31:04Z), 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/SE5Q51823957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47692d12f711055d421bbb550e3d70ba696a61eaef20e35ef3b381d35481d029. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/SE5Q51816794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bec0bc1c4a3decff002797f6720f8ce61d366e330b068110e9c787feeb9abfc. 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/SE5Q51817284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed8f98af8ee1d95ffaec7b44f1c8edf58f42b4577b07d4758715dc5f00ec65a. 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/SE5Q51804740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a0f392da2c69753ead6c29ac0a7e9f0a4eb072719095a5e07ddabbe91fe0a8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:45:18Z), 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/SE5Q51814641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35286632bbf84b93a2d0b2e610dcab780c397fa8142fc32b8e72d39db1fc35a. 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/SE5Q51825723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3dadba8f5e2b8696f268fa1a2adac232e68924ef732a8ebbcb9fbec1260506. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE5Q51806372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb28522e6f5ea71a2bdae81cd999f5073c307c70010b0493bfffccaefeacf888. 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/SE5Q51826932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d9c368dff6750aeef937d36e3138ff6b7d394b5490cf8c4442b06c5d396ac. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/SE5Q51815842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddb738c7709a6a75c5b5db33a2b5fa0a40fe15c45ec5df34c1c154f125c071a. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:51:04Z), 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/SE5Q51809393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa856a470e1573df90bd8af1dfa5e3891ac2f707fac1a7f9a587541423ebb9e54. 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/SE5Q51826493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c709724089ce1479702091b1ec27a9d5b43ba77f8bd3b6f6fd7f888bf422d2. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SE5Q51806076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422e19f55249ed27124e5eead156032d38598d3420bb4b8cc9317d7324be4052. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/SE5Q51802748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2ac4d545fde649c90df81af7c37d40a41665e28cdfb62f0e83bbdaa3f7a6b5. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5Q51809110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d19508f63e13099860486540a4736535c7829d0721229c37a34c2fe84c3667. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SE5Q51825932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3967250a0c88fd65802f1d9e82cfc6a417184f006d6b5d35e8912d497e4f5602. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/SE5Q51700448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec0b8fcb49dbbb33107ea40fd6dacd9333f0a9c7e948bd95c7ffaf8b2fd95ca. 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/SE5Q51808989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5ca4f05111960d3a46f68e1a010be7feda002c1cef342541e05ec5f62ef294. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/SE5Q51801410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68ceb82bb468a2d6abe63c29373847aec142695e9a2d70041f4550030f98254. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:08:59Z), 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/SE5Q51819942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca62d241c2266c15de2148819b3d8cedcc18465d126c6af1b4fd35a1b74af9c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5Q51818467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d72a156977b82d8c6fc62d3bfff3754a4a53697c2be13c61ae25df7997a73ba. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SE5Q51820452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c531531fcb4090c0c042b8ff4deab75da9409a127485c82aced1d805d6239e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE5Q51811738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571e5e7193b2c32da08ca7d256bbbe156b6a2547d6b6432194a08f9b26221396. 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/SE5Q51808923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42a4097ed3f856e6f207fdd39d3fdbdcada2e1a27e36de337b760f6ce8a06ed. 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/SE5Q51802909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1474450de8c516a5583a8e1cbde519fb73bf31b650b81eabdf38e85206ea7509. 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/SE5Q51802198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eed31160d1a607d1d19418d1b0b3296dcd304b6b56e0469f1efacce73e1da5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/SE5Q51825186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4181c9ca2646b78b60f95bf1daffe4dec1ed803c1f395e39ecabfe351b267cfa. 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/SE5Q51811764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c32a3f4a27f1786f8cba8e9bdde1f506746ed2f86d8401d6771d12105bd5bc. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:18:19Z), 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/SE5Q51814966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47430e529eb460be41ca75f10f01f94472b0830a9dd97077ef9f0b6131d77759. Chain 2 (Bitcoin): anchored in block 957699 (2026-07-12T11:51:06Z), 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/SE5Q51820701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7319b4855807f2c7c94aa7f7dab1fdbb2f69d51194ed780a145f6865423a838. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SE5Q51803847.