John Glover Roberts Jr. (born January 27, 1955) is an American jurist who has served since 2005 as the 17th chief justice of the United States. Though primarily an institutionalist, he has been descri
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 0xef7234b047e1d475a14648664a33bb354861a6f4593663146759c5259fcba7f5. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cec9dde5-0bb9-40b1-913a-499347518f73.json and https://artists.proofprofile.net/proofs/artist/cec9dde5-0bb9-40b1-913a-499347518f73.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 0x2d2af00366257eed4c8fb95d3e4d7bbc439aefdc79bceff9623ea3dd40883c38. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DECY52200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e3d8fe3cd8052bbf089713bfbb2803b7bb13f602773f089d2eaca483cc7bc3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DECY52200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398911adb79f1efadab6ddff5eba48e85919b282ec00f202fec5e90d6afd0bbd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DECY51080221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7f3bac9d0677548a5a704739e4bab0fb8a14de22df4255a627453fc4eb97da. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DECY51080222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a1ae65230144ecd52e83a3195f43bbc58c41a9f07ae12f29cf71736d1a30a13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DECY51080223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb6b86040fc7b2febaadf44906d84a86ae09785625982cac712b7e9ce65ef88. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DECY51080227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc98798a1b8f9215ef1b3a5f9b4d9c6f315436711d0220fa07dfde0ec9784e. 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/DECY51080228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4693225dd4c14281a43187f4b51d41e791227fa6224924477d86cf9199fdbde2. 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/DECY51080229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f13a288d5e72c45ecd58b4c6f19c120d7f4adf46072eeaf1eae3dbc500977d. 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/DECY51080220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62d31f30f80335259629a1016681cd27f500d00ab153c3a85c61685d799c23b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DECY52301377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e3d8fe3cd8052bbf089713bfbb2803b7bb13f602773f089d2eaca483cc7bc3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DECY52200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3cbeaded8e50a441ed84e07b989113fc375c010717f6fff4b0c2bccf154d3c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEU672100425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e98d8f895d6af5d25b27d3317f6e993558bef72502082238c6f075a0d3d0eb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEU672100424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56799d79093a66035eec783b18a6f594a083f5df7594cbdf3ec494d4f516f900. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEU671901829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e89b0aaf5925e06845eb4bd20c58ce467f179e06a87573706d075b2d23a82c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEU671901830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef77d44cdbaf914839fdd9cb7476182005bc493d70bac93d8d6bd2e74168474. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEU671901831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9f1ec8793e2821873891ce14c7909cf4b018d5f2e010d73d6626b845ad5128. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEU671901832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d062f9445326449b100461570bba7abe414c4aecc8c941b63f98abfeeeec4c. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEU671703138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94f973930b9609d8b23c87a98afe1e24a4c75d1df1c30d465b41d265dd1d34f. 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/DECY50880421.