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 0xd493747c48349964e6f007a468e2504b224da91380f699dd1eeb5de369feab74. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09de7b5e-a76c-4a27-b90d-dbbf40610f84.json and https://artists.proofprofile.net/proofs/artist/09de7b5e-a76c-4a27-b90d-dbbf40610f84.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 0x337c7775f8fad9ace01b7089617a1a27b808922431a773669ee04c5d02e7bbb4. 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/SGW502282463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cc0644f6c9d411796e1983ab4613cb423bf8f7654e6b57a45464dea6587fb2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/SGW502296063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a8e6ce82ab55ac166d988f748c1180f4125515af84b086dbf079f5b0d3e5cc. 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/SGW502238925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb735783fcfc4610aac58438a8211c77a6134de5c58e2c8b0aa28f683d605a75d. 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/SGW502208161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2de6be53b64d94683965b29372a211117006bae5c0e6e2f343faae62b62d3ed. 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/SGW502207558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8344e9330c19f812d3f722a515ae54e78e673bebdc109707013a0ce1585d13. 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/SGW502282090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b30e6dcc76c052afab4ae327384ed0982f03729892901e1b363394ded8a48a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SGW502292599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e58d9023fbcaf1894addb1475f2f1021047f836809093f1e80f8b39468e2dfd. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/SGW502268188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016ec5224dc133c16dbd17b3f6d6c7840050a307ce960d635fc79746bd15aa4e. 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/SGW502216619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6ee0710d20e987b01e44a9ea13b648a40be92f86d946618ee43e4a026a4502. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SGW502251909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6e05899119e7b2ac1bbda4b4b51473c679719ea227e6c129725df1245e653d. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/SGW502240933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466244e4bf0b446025dfc0ea85ee9e50f882360035d80f4464bf2c7e7ad79d71. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SGB502559256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ae4aac2c275afb50923ef4392673e78b2f7ba084415a6feab69333a2c71637. 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/SGB502532505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ac498a8f319f9922d723f5ae0747b35ad09faf05dedcb4f8fda57bad21661d. 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/SGB502550155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c626bf776d3736c2279c5c6db72d95440b46d997e950e038204b2186109d041. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/SGB502516525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f8cc35337dc7bd545e09c7a07538628348958432c4e9a2dddbe3fc748abb6b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SGB502521369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd4446423da0a3c666e27d5410239701de190ca166c63bf578dc9bfd5380737. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/SGB502521597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ebcd50d7f2dc93600798a512473285ab59797bf37d7bb255edf914f5428447. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/SGB502563290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87766e09db5ca879ae9c1ace176e84451832dbcbe51737d323c4370f9f6c63a8. 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/SGB502567374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0a54056da33e35ae32816252deced5297bd6f462fa9e64e0b4cbd625be7ac1. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SGB502558193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6050f442ea6f9d2aeba5088030ff6fa4f045650896d39dd145747950df219685. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SGB502528845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfebc195f6069e6cd07e35bf92bf4b08b5796614ffb3ea20f0742426ffb4083. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SGB502566632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc29482784f4610af9e351d75eecdf79b5487efc40f91d5412cf7e00f88f43eb8. 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/AEA3A2135189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b63fa727efa5d7ba4ea11c34255efb6430e1d2dce936fd70c762aef5f0b9f1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QT5M42582631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5018fee22d1eda375e16cd5fdcc2962db59cd3c5a6d8fab02787646f47bb04. 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/QT5M42511028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb68a34466bf8ccddfe7ff68459708e0c232a8536bef80e14444aec0b58fabf76. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT5M42571950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaaf9dfcc7271348d3f6ccb0bb7b688cd44383aad0d871093bf0fb9bfcd23937. 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/QT5M42518287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd2d40f3a2784f9219164db25926ac94ca3decde33143a09f2f46bf59b6603f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT5M42552068.