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 0x445e9e842afe24d1f4e52b4de6673f83ad93a1d4d670fed7e0623a7c954a72d0. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3ddc542-f344-4a2a-adc3-b1f6f01bbbee.json and https://artists.proofprofile.net/proofs/artist/d3ddc542-f344-4a2a-adc3-b1f6f01bbbee.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 0xa9f19b5433d7569d6674b110c669e1a31379bd8bf64e8456fa5a7edcec5b5ee5. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:09:51Z), 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/GXHG92506281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96c89a0a03b113b4a5047c1198455c351505d1522823c57def22c6aa3efead4. 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/GXHG92506388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5f936e6ed367049b7ecf53588c4b2aa48a329fd0c3356d2b9ddd17cc0eb3b8. 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/GXHG92506332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd5a87386a1d85c0f68aade2a65f8c8cec24ada6945c527915a5d794f0d962f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:12:02Z), 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/GXHG92506191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1059fac8d4de3a2544061d86a708989fdfc17f70330f0cf399d7e6ceb758663. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXHG92506180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdec7620e467fbf6dbe57318fc7615d5d506c2b9f0dba889fa7dd565a8afc6ce. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXHG92506320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270242702adc57df5a297f430c480ce16f10bae9328827a9a4535e59ff92514a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHG92506177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c4d8d2ff41aa1a104ad69a859d143b6a97a8b10048422541ee57babba98569. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXHG92506236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a409b54f3f661eee573fbc9af269a343ce3f5a2bcc63adaf2e50fae35710a9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GXHG92506247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935954f6e3075d18f5381e89ece6852f3495a766f57e202c808abd1d595b052e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXHG92506308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf269d75b73125852bb5ffbc8421c645098652e6495fdd785ad17a825c00d1c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:57:37Z), 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/GXHG92545117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86c78baeff6c2b234cb74bceb032d3dda77dd90067861a1c501ec00179bf9ec. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHND2522534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96be9c54cb99f64be3219c359fc2209472427b053b328fb4b584ffcd6f3f36a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXHND2520129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98110344f4c44579414612baea1c8c10372bf1efecb4123f6223c73d78fba135. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:23:54Z), 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/GXHND2565841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55e33dae8ebd75a70dd509a56c6828b60bda027ec2ed7b223b7ea13fcd964d9. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXHND2565565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975316f4cdfe58886929b979e5581b483c87b354f6f3a3a4ab1e98be2609a4a5. 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/GXHND2565782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c935aad19ef699289479bac435316ef4fe305f83df5905e33e9d35de2a26c7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GXHND2565817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3529c63e4bacf29c558e2217078b56f999f02bc7ff7a07e4d5f4cb00445f27ad. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T15:35:14Z), 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/GXHND2565619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7259bb4b59c75a198061102ad6d2f9db2eb13efc4d6480659474166fd034bf52. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GXHND2565879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6d214c9c8d82de513d23da695e3fffee915185cdb2eaf4a81e424fff8a4b60. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:32:41Z), 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/GXHND2565852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca0e083443c80c9c85345605ec1059dc24213b1750fccfe1390e8b16d681d19. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:36:25Z), 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/GXHND2565523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a947133956f31b692aba1cf29219856418744ff5fc6df28293e434f81e8611f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXHND2565654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6f311bf310b53975525e4d1a44ba7c7f2d163844002479d0a3e65753f604f7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GXHND2565563.