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 0x560b59c633cc43a83339d3d8e70e95f3e99fc6e2ffe7a69e0764208decc33404. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/077dbc2a-dddb-4571-a944-781be948ef65.json and https://artists.proofprofile.net/proofs/artist/077dbc2a-dddb-4571-a944-781be948ef65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Come to the Water - Instrumental Setting of Music by the St. Louis Jesuits, Vol. 2
Come to the Water - Instrumental Setting of Music by the St. Louis Jesuits, Vol. 1
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 0x2a6852926bc8ea658394a1f21aeec7a45fe8e9e13866ef9770472b00618e5feb. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USA4N0304389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669ad4ee8bb09108bf12d08ae8ac5a2550b11eb5dd96c23de1aa5bc5d068b2ca. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/USA4N0303416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb581d70fe217489b052a94fee2afa01e1b5b0f1268b57d4ebb0048bb42e5c4dc. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/USA4N0800408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4439d64b0c4ca50a488bec95d9da8d4b14a6b866686ed2ab7da8c39028293f. 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/USA4N1500713.
By Our Love with Mass of the Goodness of the Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6bcb84f30f0e53f40c08d1b3c2b28c2fba664e75a153d2f2f85c0b8c94aa68. 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/USA4N1301760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4f44ac3ed3d1c11926fa946a2e7e65e44e411d8d00620348719bf82171b0e8. 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/USA4N1301720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd112911a945eedb0667228077c86c4011f0f890b7e3fc3504763a9bbc47242a9. 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/USA4N1301791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d76b01c2dd572ed78394faa877916e90ae1ad637168e1deb00e607af791ba1c. 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/USA4N1301053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5c95b6934e428eaa6cc36c7881c6bbc84c39c527b310a1508b58fdd592ab40. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/USA4N1301634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db15d78aa248c58aeacb1d789f5e9067c49c1afa1ab517c04f4c22d37c36ffb. 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/USA4N1301837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a5c2a24cca3f41757ff9c5ee84ba9d06a8f7331308b519e3f3f20a3d76b2d5. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/USA4N1600215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c2879463fbb4087880a5b6bbeca15256abdd62a68ee85eef22ead937b2334e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/USA4N1900352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f83061b7f583eb53ca349f0f7d5ed827bc4630e908bb64cc6e39dfc9bd474b. 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/USA4N1301393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c231265f6e00f6c32abe9b85c00aa308572d586202abf31f7e695cd669196f. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USA4N1302247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf121a4d763d3725104f1b5a9a90580df5eee886b907bf570b3b47c3d820bb09. 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/USA4N1303725.