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 0xfaaab64b7aa13282bf8fdc26ca00074871acaf7bff48b6a00107d6d3b43222fc. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b4608f4-2c42-4270-918c-a66bc19831db.json and https://artists.proofprofile.net/proofs/artist/3b4608f4-2c42-4270-918c-a66bc19831db.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 0x319fd6b05e4d7d80e1d746df094534e0d4808a7e063755e05a9be04b734df122. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:18:33Z), 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/QZK6P1977677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be3f39b5ca7f9808e6dd878517c24e12faa00c88d7593bcc79c615ef66d4791. 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/QZHNB2128141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cee283b1b5991000a0ad16aa08519606ab1b865a406a00677bd8c24431648f3. 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/QZHN52163212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cec6eb3fa9e6b579c0915ed68feae91dbc648fed9e1747c928b089dcd05d1ca. 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/QZHNB2128142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e61eef74bd516f825cb9771c5f811ec798e8e7e3c1603ccec3d2386ef326799. 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/QZHNB2128144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc4c91f120900af6d6593fcbcff7f4b1d20daa3323d4fc0c7ba9894f40ef2d7. 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/QZHNB2128146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ff5f36282bcc047e8db17e5be07c1a8aa61b7628e86dd8998e293bd1cc1813. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZHNB2128143.
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 0x5e44fbc0106dcf25ea40c47b2721ae302ce96d752b5085fb0946059a727a35ce. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZHNB2128145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedbea74073794deb9146c5912f61619c641c4f26ffc1caf9560d24233bcf53c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/QZHNB2128147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b06f63aa8be34de42afb5827ca18b656b29661aa273ad0252c38a7450f0aa31. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QZHNB2128148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ca0766c602e152594a511f00c1eb47cd703bc7fc3866c7faca6f1e5075b527. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZHNB2128149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2578e2359021b83669185335e722409d480e58ab7aa2fa1f6c545778aa4d0ca7. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZHNB2128151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b030bdd7e2c52674cb26a31d30473a1ed5a9e07cf718f11a4329a542559471. 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/QZHNB2128152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750b95235f17be5e40dd286dd7ac823c44e4bb7773894a6c8c4e8437a0461a1f. 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/USERN1010893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e14c278be90f54dd3d57e12794882eafc8a83484ddb6cc161adeb270611ed5b. 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/USERN1010894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97907cddb35ade66c6ea123d675518c707e02ba25c320b07546d04ad5cab779d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USERN1010895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d3d4f8cdc5d9a61461d5ac2c465ba8bf5a6eff8923c77e2b952939e89c8fcb9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/USERN1010896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c192614674643fe6270e5ab6ce48fe24e21e66d49445c26222c59018f80605. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/USERN1010897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cd1aff6b36e07fa1b65eaccde8454b1a6158519bf8d6a0fcf32752c9f221a1. 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/USERN1010898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e35f3688e34e3556008833e2776011c304aaa27e115f36bfaaba383291768c6. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USERN1010899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806f8198d82b14c3ea88d617d94d0236fc0eb587b04ac2c793d96968b84c5036. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/USERN1010901.
I Will Destroy You, Myself, and Everything I've Ever Loved.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa853de1c88b4279d9c618ffa18d1edc4fa4d333d93563e4def32d0805f67c3. 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/QZHN42061098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f182ce88093344ad01e9c790d35b09efbebc0927b2a2ef4cf7d9ce55a7ed8. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/QZES92268898.