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 0x28738b7c62739e1840a2402463e2967a60dbdd64c27e6e9fec381218b979e1c2. 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/3f82e25e-0f87-4044-bbfe-fbf93bdca938.json and https://artists.proofprofile.net/proofs/artist/3f82e25e-0f87-4044-bbfe-fbf93bdca938.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 0x497c6246c7a4cf75471fe77f1ef73f1af2a161e98dc66447729612b16e501a8b. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/DEN062400317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b377739117b2c2ff4c58c4649b4e2a0b58aeb8c6143810c4517fb79e613ec4. 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/DEN062300569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6c930fe796498f7c0647a18fbbc627a99adf8543f9de5eb65d60c4dfa1ce2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEN062300331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc584de35bcb6969a6777825c00b0a3dc5841ee3f510583a92ef5ec692764c7a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEN062300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f2e7f24d123ba091fd4cafc11ff6c5eb5ca2ab5d9b5dc2fdfaadd1a694ce8c. 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/DEN062201435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc116e7a021273b25f2cfbd507cb132eb5546bd73efd8a106b49d92e2ad29bad5. 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/DEN062200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85695c5682f38ed2b951dc8d9bab4e9ec2ca3deeb9e8abac473a1f84f3aa5d31. 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/DGA0L2301250.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac0468c487299b36887f76f4193e901e7538862f0a12fcfa6a486a3287c414e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEN062201165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc24112008f9cc46861a6278123f12eba3c98850a1d814085f59e528182ef2e5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEN062201168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3177534f8ffa51cc40b1ebca8d971228de0f2cc8c07ef08de2e08d9e52a78648. 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/DEN062201169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdcf28073d212158dc3524dbcaab0cdae94471efbd93634bbc30e606a1a77669. 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/DEN062201170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee9c59c079265120f526dec4a2c4d4967ac209931471ef44e606a60cdfc24b7. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/DEN062201171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9801ad57db67e3f5a6090615d30f9a09a960e2c8b519703074287d2d995bbe9. 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/DEN062201172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9aaef9fac0dc1b4abe2f9c5366f709a5975a448e10fde3b0a9dd2ace70595d. 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/DEN062201173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3eb75d94e6be79549e54c4a973bdd046cc5286e7d53ea44ffd3700a46c040f. 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/DEN062201174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb083a8c2e95269f71c517e0ca17ffe06ebd9a1115b458bbcb00eae30de000550. 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/DEN062201175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186d9be1e390b687fb9a4b83ca601b6ef41ac40c9593c2f8f1df1132c8c68177. 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/DEN062201177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b4ad01625edc3c28e0a71a46897e20b5224564912f497abb7b93f334734a81. 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/DEN062201178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444e36787ffd6d49741c48288f5dd7e98c86da94c69b4ac38af851f8ea05d653. 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/DEN062201180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c302782bf74b5c82173e3d78b0327fbbb674f986493e8572342a0acbdec6e76. 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/DEN062201185.