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 0xbf015ba284fa363fb0a6aa1a9f4cb90d920253ecac8efd83a4cd4addb8886d47. 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/ba22d4df-a6c8-49dc-81a0-e45197e30bd6.json and https://artists.proofprofile.net/proofs/artist/ba22d4df-a6c8-49dc-81a0-e45197e30bd6.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 0x5dc93c162ef68192a352034669bf30f26b0df8645dca600cdcd6913715e88855. 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/US79W0510901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe190aa9e03d7cf74a3a2d04a533a0f31b67c4d73cf252e254436fb8ea721f56c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US79W0510902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5877b98578539f9a93f4cdc6cc809c98cfc9c88524709b3cb4eec0e430149b81. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US79W0510903.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00ed796e19817f77c9adfca34b471d8a1a1d6641f89dde5617e8df429f72ace. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/US79W0510904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe05ae38eb987755d0b03625cddd6fcfa0e9cd8ba5e9b401e8f17046e8ec59f. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US79W0510905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa943944b92a77521a81c7e520a1f01ad145ad39c2055b1f6afd48773521c90f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US79W0510906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea613a3afe9d15b7c65d8887ebb03650843b04a4424bb4bbfb61aa96c4ee16b. 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/US79W0511601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488d7319e9c67ddaa7bf0908ae46cfcd18e86590cb24c82ea79eacc759ea8fc4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US79W0511604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a771f71cfc427be53d92eb5b11739e0bbd9523ffa01a14bdedf1d08ee7901. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US79W0511606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0010deaacbd522c9ea2636bcff6e6776eca16e99599068d1cba26d9673a6226f. 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/US79W0511611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb91be1c9e4ed7379c8e1ec77bdd2d455b98e268bf42f2507266cf5578cfb50. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US79W0511602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc32c671a041b511324dcc9253121dd4f0a67a914bbbcc778acd3913b3f7bb3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/US79W0511603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037120fa4da7687b1367fc078c63810ce51bc8269fd1ecf5d660d786495ee124. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/US79W0511605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d08ab21b09c085809d688a67610439103d93fb36a7fa76d5044096cde0b84d. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/US79W0511607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe94c45dc15b3f146bdeb3f883e5b5cb8230b39595cd75ae00d4bf2f41770379. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/US79W0511608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d72bcaaa226d7a33dcd33a8b57f11b7e0267ca6eb0890ab0b36d0ee02b1601. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/US79W0511609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395a7e92ed681b52563f995567558caf0219eb38d6f98d27340ffb14ceab7a42. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US79W0511001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0948afb411a83e680b44173a8e03a665cf9ab6c3428207069cf87539460a2. 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/US79W0511002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57792674b4e6913d3db13e1b6a297594a1bb7b142545bb90739e1354ba5a9745. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US79W0511003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36043b9e3e2307257925e3478151c3c53395e7828a4d057c14e523b2c61131ca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US79W0511004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda70dea267c302993862d94951e388365318ad937e36ae376424850f909404c. 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/US79W0511005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c14f65b9c7524b13ab7a7a5195c0acceea35cfdd3857ec41ccd9b0b9127488. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US79W0511006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a4b8b6cde18a4fc45a37d008e9802ad2978c5da46b9b6c26cbdbb286b782bd. 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/US79W0511007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d4ee5048354e91e7d1d602a07655c0acab23571ba58790f5fc5a6470ef6fcb. 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/US79W0511008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152ef834509b3c2de5579af8df32d7d78d343c4584f2444e240a06face6302bf. 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/US79W0511009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e0e6d5f6b50a64c6c3555c9a7eb1d9a46b0fcc8e496fb85f46120192e312bd. 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/US79W0511010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502b16cffa2e8f3ab74ece25b6f9f4905ec93e08b69f6de8ed584243b6208694. 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/US79W0511011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a14e9880507006e22eb23b41268106ba2686481dad0cff1666f75e0c0f01db2. 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/US79W0511012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x352338368ea59e0ce17fd864f876b21e0857ad4b4802d42a8d8e25d38e991cf5. 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/US79W0510801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a64e40431e6ddc19df1071cd9a8bf9277dc0fd336942a24cd85a16a9923c13. 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/US79W0510802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8943689e61a7ccbb5b00f2c2743bbb92beb41fe4836ca7d38e84c1cc43633f8c. 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/US79W0510803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7710e66b7764c19700685dbacfbebe47a7ebbe39425e1241da0c8b406cb62c2. 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/US79W0510810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7cfbeadac815f1215427e0408f5ad15e8fddec9b2d1950f08bd55a3f355f46. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US79W0510804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b1dfb1030599312295f22c58e72a5078dd860511d528154776d24cebb9d91c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/US79W0510805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49719828c88825b4043ec15a5123288849b82bf915d092e0d01382671ade6b5f. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/US79W0510806.