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 0x4e2a2f9257f112c148f72b85d02d31eb629d5c7856e64dd66169f1efb76d407e. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4207ae0-fb85-4830-aab7-eb3962d79f06.json and https://artists.proofprofile.net/proofs/artist/b4207ae0-fb85-4830-aab7-eb3962d79f06.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 0x03b39fd5667d3fd2c572b42e9dad05d58f46510c93011d438d718e34d44a1704. 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/TCAJL2597341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59167651f74849da6410a981847d3b96661141189bed1f5ca377f0e3f90aae4d. 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/TCAJL2597373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d68fe80afdecfb381127ae826aee5c5cbf216101b08601c354bbcd952c3cb3. 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/TCAJL2597386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee0dbdeefef941b8554149294b0e636cf8ceab8724ed9272412978445e86c2b. 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/TCAJL2597392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b621c8e871bdcc931a5e921f96645a645290d0d6b6a8ccb5ddc94830d77f11. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/TCAJL2597394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e360ad1039609deebca122f69dc38fdd4f501ec681e092f02910365256c1ed9. 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/TCAJL2597409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ac34f7aea7911aeb2c76b13ec1f32b61c5c92ff8f50baaa7cc6be2cf0595db. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:57:21Z), 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/TCAJO2575051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa657e0f9858b809c58d5e508ff515595676b82cb0a364bf872be47e237d1ea88. 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/TCAJO2575056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee23929577d93b2566d53d6ee04737edb4463089d4521d1547240b8ab426d6f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCAJO2575058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108ae22c2b788fbd1f74a28f51cbf00e0d5f4fc7ed5b1b66d8a65d66a62802f5. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCAJO2575068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198dc38a708dc6076a1f80a3c0e40ff0c6aca10b6868391d47d7322d022e5940. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:34:30Z), 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/TCAJQ2504928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66c2b64a20de5aefc225be30d172f104ef3a3c349ddc683e581075199ddf0e3. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:11Z), 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/TCAJQ2505023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9734953b35c28e40197a62e3988d8c344d17a44687547d3296eb9485734b8e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:42:42Z), 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/TCAJQ2505027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f727157543276952a3eec57303579e5442671780a68447a17b13177fa85f29. 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/TCAJQ2505036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc87cd2155fae4a31ecb80df32ca0d25ebbc3deac7a133c85164ecc03c0a5639. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:55:18Z), 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/TCAJQ2505058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd869c74a1da123cc67e0d7f8ccf05910ada36793662c04036dfdcdb8bf74d96f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAJQ2505061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd7942e647ead5df69ffb88d6bbd4a6eccbc29b936721cb233c3f2fad85ce46. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:36Z), 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/TCAJQ2505065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea96e1ea0528b76b510ccb62c8ee0592c25968869aa652e884bc20e71d626db8. 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/TCAJQ2505074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff280a7ea46d51f8883320b4c47545c42ed874adb343948c3eb556c342f995c. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:09:12Z), 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/TCAJS2581238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d8cc16af514782b7acc7fbd5fe1db0018c6a7fe3d25a4073381fa250f0b8ef. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:19:15Z), 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/TCAJT2581247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdc3e90510afbc5338ffe203e0f90ce4bc96cf271e6cf02797db5d5efbc08af. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:11:16Z), 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/TCAJT2581255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472b7ca07eeb87c9c5a1fede069d02d66a7bf7c2b1daf372afe2be1cf90c9b57. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:19:32Z), 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/TCAJT2581258.