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 0xded83cb80dd43de76ec15ec695a5c494753e2f6cfdc77c5c80872182b6e92f39. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b38656d-ad13-4c76-b19e-6584b23e1100.json and https://artists.proofprofile.net/proofs/artist/3b38656d-ad13-4c76-b19e-6584b23e1100.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 0x21d33af1a0cf5d41f0ee24d5e55f5def011b705e667c37db385d5b7abecdf003. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHZ2424517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a00e9eb96a385b358ef50f8e488f16f47bc1d12d7beed2393de0afdf2beb176. 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/TCAHZ2482761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a7d322da632d231683fceefd0187cfcdc6c31a3306a5142cb6f3c3ae8c6d1c. 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/TCAIA2458164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf6fe3bce2ffeb35006a7f3d15474c88c5c84147ae17ab1007dde72b7ca1103. 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/TCAIA2463292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218c891c9d92dfac3c830de07f605eb68e6a03509095a13b6d8b29acc342808c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/DEPI82430819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0274d7a4ecfb79e44183d7f8a3dec6980b20c2a008b0614b13c72e49e3caac6d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/TCAIX2461084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155bcc3ba1b2343630c6b6a0240355c997dd9941c5480b3c97f3ffc8c679af44. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:27:37Z), 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/TCAIX2461087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587ed1105d1bc1f0decc2adb49d3a36884ec982ecc64a31bd04cc03daf7711f6. 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/TCAIX2461092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6d15769d3b3dd0aa8f0990217b683b0c50e37671d89938ecf02fae76bd3b55. 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/TCAIX2461096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfa7f693865e08adccbce4eb5848844928f3f70e68b8c4bacc52e958ebe4723. 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/TCAIX2461099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e35d14fa96d28f5e84ccb473fbdf675cdfeba675fb8b0217dae60bb1b121a70. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/TCAIX2461104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd744cef300068587f8d1370664c1e73f2cb5112204a6ff4593e6d583db81570b. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/TCAIX2461109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2c41e9493fa91d992546c9632e841921df2e82046d61d8775190bb5c2a4216. 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/TCAIX2461117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cda7fb6818b00879fd249333b9971ef0b0deb554323c04c6f950b8b2ca2ffb. 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/TCAIX2461121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0b0ddb6a2e75c4a0e336bb2b506d93ad2787ad1fb01eca8399ac80b718f610. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIX2461125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571c524de4e854335896593f45a1dff855fa9fb495c45b1519b8d57ea0f2fa63. 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/TCAIX2461131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bb292a18da2e474363215fe0f0839e7a1d75838b6e226276d4a032144b739e. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAIX2461136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd8c63034b3588b92c16c793b6e18fbb0b2bbf2d33eeddc40c15eae5688f9fe. 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/TCAIX2461143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc8d97f33aa057179c343f4267bd0c42d74e4c559e6646f2f3c5eecbaf79c61. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAIX2461148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a447d205561f3b4ede608c2359808d74099ef371ce40ec5ca8b555b8f582554. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAIX2461161.