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 0xf8195957385566d92907d14f824007f0e63136c0e3c5f63938559c6d72e7c6ae. 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/d58efb61-1fad-47f5-be36-146423220f82.json and https://artists.proofprofile.net/proofs/artist/d58efb61-1fad-47f5-be36-146423220f82.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 0xff9fe6f5d053c98d27caefc5138ba80aa91e48b646960e3afd51e9602c13aa4f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZRP42290184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa541046f18e36e753feb46b6f049a1719ad575a029bb47ea22c8d8f543734caa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZRP52280644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ed85bdd62b3910043cc80590547aee95f8a85328b417974284e79e88d8c5c4. 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/QZRP52280645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63357927d8940e9d380ea387874a049b358ba2d26826b032591f4654dd1a1a6. 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/QZRP52280646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be9d0217348d0bd9958541cf72f2ba7d917dbbf2f46f02edea8e2e2690b332b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZRP52280647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050181af1aab3331f7b8f15ca6f0b9b1c71ced24087e6cc20eea4e3de4f63f77. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZRP52280648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61bfb1d28a9732017c68f8d68dcd388716fece16e7e6b0de794ad5c7c5341f53. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:25:20Z), 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/QZRP52280649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd66f1e3321d3d1d9e79302524a8327aaac383c6cee76b33dafb4a6b814b83a4. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:34:57Z), 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/QZRP52280650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3486fb9508bdc3eaf91012567affab3ca3109245997a7636468bc19c61e00b5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZTAS2259526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a989d29e3cdd77e4dd3976d4ac79b2b161c7876d96ed91e1ffeeb0e99083cd7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:26:24Z), 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/QZTAS2259527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fcf7ee328cf32e398a5d08631dc4cdc1065a07403db496c17b9c8053eaddee. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/QZTAS2259528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b4cc46b28405c605e9c2546d58794dcd6d4f9ad36f3e518b3ec646752e45ed. 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/QZTAS2259529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b95da3804a5f160739baa61531b96373f906f98f4c4bf2204646ab8f7b14b0d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZTAS2259530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6811e1f28334ae24811ee0d6ec76c38c66d31f0be6eedc83c3e9e17d1f54fb35. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:30:09Z), 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/QZTAS2259531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ba3714603e6aafe6b6edcde2d4a478439301892a6149a82032a677cc6ee155. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:17:58Z), 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/QZTAS2259532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf831ea57dacbdeccbc56838ff74d2933d0e34568b089ee24bcdbd41e8e4326ff. 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/QZTAX2200682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9e0052b363a84ced8c492be438ac3769f840fb486c86f43f557caf8cc29bda. 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/QZTAX2200683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83101aaf78f16f5d514009fc2276bcef693ffaa385a2dac8d67574547190876. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZTAX2200684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3bdfa2691ce540b3c5f882cdfae9568f62977041b5b5489f9b5acaa746644f. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:28:27Z), 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/QZTAX2200685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cb3783636cb9b17f439802e9d03cacce207817f128c02aafd301cda2b5377b. 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/QZTAX2200686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087d79c633b9b8628a931e9b1d72c16ad54b1392c85d58d8c8056911c22dabaf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZTAX2200688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3a8ea3ef7ca37777464f724cae91f80aed5b8f6861eb6cf7066ccb0707ca4b. 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/QZTB42227700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93728f84643d431690987b111f6355dc96de676be4d91a6d0d838f14b48fb93. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZMEP2306150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85494c199a0e1f13b2adcb1b56064724ce346a7cdabb44c9fbbaadde8e3d8d97. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWU2309154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecfd222bc7e1e33ff74cc9d04f5891d90df6afefe8b85549adf782b4eaa746f. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:03Z), 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/QZWFQ2339280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7da9fb2b0759d9233f3454165bbdf9fc226e011dcca4728f11363890404c741. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWW2404133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d77fd0807e1dc3939f9aa401c0dc1d741bd2e9b868aa7b47d8bf6236c54409. 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/QZNWW2404134.