thumb|This is the woodcut for Utopia's map as it appears in Thomas More's Utopia printed by Dirk Martens in December 1516 (the first edition). A utopia ( ) is an imagined community or society that po
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 0xbe20fb5e5d4770f6cc2f8cba43bae6bd40eed390b3b104025e95b941d2fb456c. 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/08549e2f-46de-4e03-afb4-424cb61f1ea3.json and https://artists.proofprofile.net/proofs/artist/08549e2f-46de-4e03-afb4-424cb61f1ea3.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 0xb6dfd729e74e58236896efa4771c0bd13ede8bd64c3b4deb538496fa31c64f0e. Chain 2 (Bitcoin): anchored in block 957810 (2026-07-13T05:55:46Z), 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/USRH10553070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe876fdf9ea4176e0507f4e69b0380e1f4a186615185754835ecf756eaf92c886. 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/USRH10553071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad4a30fc33afcd70790a0970eea16e4e6f1f4f5036e580279a17bc7e705da64. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:32Z), 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/USRH10553072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3646c4ad37be43a9c766d72c6a722db862677566b05b6469545ae019c7975729. 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/USRH10553073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fe2dd0d0cf3b54a57783faf55bbc852ca6c7aeaf991b396c609459ff6a6bc9. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USRH10553063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea593e34e40715fd555ee5616e1c876b6fb1056ee336bf2979c20cfae2fb8fb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:13:46Z), 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/USRH10650078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2b58c50a4ef9b94e4badbf39aeaebe99a92ce3eff7d8fd78aa05fbe516b8c9. 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/USRH10650079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c868a1593598da8fd324ae58d602d163a3880bc8c72bda7175d23025cbdce67. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:14Z), 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/USRH10650080.
Overture: Mountaintop and Sunrise / Communion with the Sun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c1b9f787eabe7d5111cedf98d36ac6c34af785e1f832c97153c774f8341876. 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/USRH10650090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb66e4f735024db1418b79e9a5858f37e226416d6782cf347e961dba20100957. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USRH10650091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d633b9fe23dc3894954ca4c8e48b6fd1d9df83cb2b55fe0f929b8cd8ad587f4. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:11Z), 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/USRH10650092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7e9c655e6d726719335b0d68882e1ce9de8f079912a8b3dd028b7f98f7f3f1. 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/USRH10650095.
Singring and the Glass Guitar (An Electrified)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4b4aa756186351b2863871f6e5f48120a43dfb2b609d8287330cd62eb3df15. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USRH10650096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f0e6d1a6e3ee695802710f3b48c08cbf0744a357b44ec4028b49eddf6a95b6. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USRH10553872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa73f1499baa43698e4dd14ec783b004662e4c9c0ee76fc4197d526bf9fa70ad. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:19Z), 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/USRH10553876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bf838d40e94d05708494517290cc1e8a1b5712cac2cdbda3bba583d6c98e4d. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/USRH10650061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79367e9e76671aed5adabcbb2c33bc3dc85d1a35acaa32a4d25f2bb41bb30557. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USRH10650063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa302c861649ce5df44c3ca4a82b3c6eae5ccdab0f79703bcc0ffe486a76a3830. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USRH10650065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d019020fba0967f0d7fab52db6ebf3daa9cef86f820901ea231690e18e0a8d. 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/QM6XS1807279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef8155af5b2abfbfed16c6177e1719499727c637e13b184ae241ea71dde79dd. 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/USRH10721486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82507d9dc11131e65e60937b96b7c165f6f7a9050f3f789e93a1579d45cef422. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USRH10721490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39442dc3a53e4594692f1f7ccd52d624a11bfa68fc5b46714993bc03fc93571. 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/USRH10721497.
Bootleg Series - KSAN 95 FM Live '79 - Vol. 2
Black & White (Remastered) [Live At Brown University, Providence, 11 Nov '77]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82507d9dc11131e65e60937b96b7c165f6f7a9050f3f789e93a1579d45cef422. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USRH10721490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179d8aaa355a77470ce4a2ef353817afd1ed15c5f621c6e933877826d685554. 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/USRH10650089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa445bcef79327d2a5453fce916906c206f22c0c55ada986b266102e319e22a. 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/GBEFP0015301.
A Decade Of Dance Continuously Mixed (1995-2000)
Almighty Anthems: A Decade Of Dance (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bce3e1a1b99264ea0afce436148175ecf3d7986733b0c99e841cf343f6182e8. 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/GBEFP2003402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179d8aaa355a77470ce4a2ef353817afd1ed15c5f621c6e933877826d685554. 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/USRH10650089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f67969f79b20ca0a07c09302e4b506633b22112811cba6de6808dc4a9d5f694. 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/USRH10651757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179d8aaa355a77470ce4a2ef353817afd1ed15c5f621c6e933877826d685554. 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/USRH10650089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179d8aaa355a77470ce4a2ef353817afd1ed15c5f621c6e933877826d685554. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USRH10650089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a79815d4151d7311d0e8970ce82c65734027c27165149bb34b4a81209277a64. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/USRH10651761.
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