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 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 0x9f4e925a82bb289cd44858cc1a7d843a0c536b5b055db7a389f1d6f01c511821. 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/376c4ac2-0f7e-4553-a29c-61a087bbb689.json and https://artists.proofprofile.net/proofs/artist/376c4ac2-0f7e-4553-a29c-61a087bbb689.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 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 0x4a5a551933b5bc329863ae7c4a2e67bd575c5c1c90043e910510e8c77f108479. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCADT1802980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8529a013d73b5283c5b08a392b439fff3144f7ed0147327dffc29787303b4b38. 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/TCADT1802998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c502294a92d9d7ab37cb842c42c23e2b21ff485dbb6662e6bc1e52cfadbc58. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZHN51907503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ec81bf15830c35150ce46ad6059e8a256d6e0317811da66ec191884a0b9cc0. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZHN51907506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca15fb61a0460b50e65469c089777ffd00b386c7e6668de6b18c3af75498a41. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:34:19Z), 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/QZHN92013740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7bb925d477407a97c671d4f1022b656816e6fee1a1c0c0a19f3557deab776a. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QZHN92013744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b6060426e09aa8bd9865ec386c8314cb683c9f9abcf0c704733802a80e53bd. 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/QZHN92013746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ced9a442f42a4f2fe7a04c6c65e8f37ae480780eb2ec01552bab0f2df55fa49. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZNWV2186062.
Welfare Goat (Clean Version) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff79e892e1a4f14d48ef4caef87cc105be504b3a23d88fcd61a2c4f99f5a04e. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZHN72239877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db984548b186060cec70bc153c8d1ebcabcdf235457dee5bf19052008c5231. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:26:11Z), 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/QZHN72239881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8863494df297d48248bb159fb0b1a4a603440a09987b98d79e5cb7098bdc1e49. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZHN72239883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93de1d61b110bc3cd61dfbc8d94911680dfb5916dc37630b5c2b84f35038c17. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGL2225213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799de4679dd5ca6a88da75a1043137908f44cf5d6cd391f1bc2dad4d55d645eb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAGL2261970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0002a7d726db5be71ee6d93ff7aa4c1014bf2a39b61880a108ed7a0df5f38701. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/TCAGL2261985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ddcdff949e8c841df0d588307c29a9de20827b3cc52587e2551ab2e395985c. 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/TCAGL2262013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96858771a6580589e34db0885a79c473879485b32c8019343223dae1c22c42ec. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:56:34Z), 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/TCAGQ2255088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933977033aa199aa35fd25fdd7a5d56a5d06507f1b72b4d71e8dc167206d8133. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAGQ2255126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dddda461b790b3e690142b9cb3ff90f2ef824dfd2a8bca6b0ef3590755405b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAGQ2255130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4157a3e19d3992563522ab8882baa27a3aa213afac659fa9fc6341343b8d1467. 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/TCAGX2331271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f6a4bc614cc3a43c7625a651f7eb319aed7fc52b3647b59902d7147f7a5206. 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/TCAGY2353335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24cbd0c61789ada44e67a4154d20220514e0e4a74109abb8ec498440a52c391. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAGY2353372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3c7e4ffa26abd22a8d2a265cdf50424270e3af1891f5f33b8ce330bcbc1bcf. 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/TCAGY2353432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a4e54191516283f1c7be28e1f19eee08b0fed5a36c01381add6fe2968c7aa5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAGY2353670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3832af3e4c3233d5fef9118ebe0c7354c0db417f43d78dfe2858b21268c269. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAIK2431849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa726792d88b71d6b5158645a9fbd6a4f943a302dded44fb083058f83758cb616. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/TCAIL2431868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2494dfc4c62cc9f42b1cbce886b06aace6d5e6f430e66b70dbc26e7271fb6f5d. Chain 2 (Bitcoin): anchored in block 957838 (2026-07-13T10:04:52Z), 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/TCAIL2431899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b237bfdefaf9dca8b06b42a96160e823e9c1bf40e615b5a4e30c693350c7079. 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/TCAIK2431927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319e4a43c7cb4e8930f1f140e72c47e0dfa7af9ee25c75729059e52a8d8a802d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAIK2431964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf3e9e4c2b615d755a6372b98cab8ce34975838276e099479c91496f0646574. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJB2428532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68df49337d58f05a1c7e9599b9c48e9fcbe9bfa81fa1c06a0bb354d27ab975ed. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAJC2428543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43d24b7f59e700558771f385d5a1812c23cfc337235c54077dbc9bf69291878. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:24:40Z), 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/TCAJB2428591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747e42845d3b079add67461b5bf0aed7690f8ec34aaee8fa50d9f2a37448706b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/TCAJB2428598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4817d9944bb7d82a4bc2234b4a53fa820434192035ec11300d723c03e9742a. 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/CA5KR2533787.