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 0x9cca2bd4c35260d189a171e92094d0842d74d3851357a28f585b8b90e383f716. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac2a039e-24bd-4b5b-9b2b-0f084dfa13e2.json and https://artists.proofprofile.net/proofs/artist/ac2a039e-24bd-4b5b-9b2b-0f084dfa13e2.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 0x07613304c9fe7f70ea8ea5c0c406f87b46a15bbc5f69215a129b1b8f4293f5d0. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USV351428117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389ac57b01513a49d1c98e7ee2e39dc03879058c284f24209093cd2f0e7bc263. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/USV351428118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde86c8160a40c25b22a2eeb7b5a10b3b5686fe1f29f1d8c3cfd32819a56cb77d. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:39Z), 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/USV351428121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32949807bbbfb1f2a7c0aae9a19df3444c2acbd65c35e4e6be59523ffdf092. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/USV351428125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67941d29fc59c0a6930259cf0a8f6573d2f6d4bf13e771ca34901135b7e64b6a. 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/TCADF1786480.
Junk in the Trunk (feat. J-Dodd & El Gun Legro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f7a0895e51ca0affc624a26e7507386615aa21add734d3efb7e7bff0dca11. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/TCADF1786503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2156c16d5c5d12151d6293454bed9f0209f7f8c71c74297ad3c413f35fb54c6e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAEG1999571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe434316b1b593d9de3b67df50c49a5eb84b2dbc1ebed21bde84b01ff73306d65. 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/TCAEG1999584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625db5bb79e2d5563cba1fd11de2dda0d8e2cbed6e6051aa076c0d74f151505a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:19:52Z), 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/TCAEG1999619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b4c4f14bcba67b8d9eb5b4f84576bf65d7ad3f9224967f4627571fb25c2e75. 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/TCAFS2185672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe49dd6ccdaf2083ea97fd7820424fe056a16fb7dd08e81393bc84b6edfca6c9f. 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/TCAFS2185711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e314d46566d70ba55ad87b56c234540d5f540fe687f8eae3bc539c812fb3d0. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/TCAFS2185740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a3ef16528040dce2ca2460ee19dabeecbce30778abf56e72a03cd998db94d9. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:48:46Z), 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/TCAFS2185755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852a17b6bf0d73d7361acfa01671661b8958136412bf7848a2be24d5b9139f89. 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/TCAFS2185783.
Dancing in My Bedroom (gloomy june Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c281e7fea72c0945184ddb054bdf55c28741d3fd68023f4f8817a8683638ee8. 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/TCAGI2209330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9548c50b3ee8711afd3b35a6b6f80c9ec747bdd51fdef06bee650c67e0b992ec. 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/TCAGI2278421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5536dd132675c24d47231f199c1486cc39b3cd48f1690276275f2531884ce1b. 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/TCAIA2479820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb64cf651749a8deff94370d2a91f58cb911a1b06ef4a949d223cb7b962e82b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCAIX2480055.