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 0x143324bdca7826d6f520745bbc4134a672aa3d79bd037a63574303f4814e3be3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/977e4e17-76bb-46f4-bd01-6ae9f91b2ac5.json and https://artists.proofprofile.net/proofs/artist/977e4e17-76bb-46f4-bd01-6ae9f91b2ac5.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 0xd57bc12f525de16d925208461c32a85c30b43f244f3000189940a7ef5d63403d. 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/QMDA62201033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1543f2403eebb9eb9129697224a705b0d4a72d827ce21c786a07ffa34fd435e7. 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/QMDA62201052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0595ef142788d71e1a292eb5218ea1210fed728d11f6c7c3debb0048829946f2. 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/QMDA62201063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3b56f526f144319f5238948ab5b28f396912bccbbffb4e30f87bb996c9f417. 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/QM6P42486395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f375ad25b6fa5a0ecf593c5960e74b5f6793c0509399c1d9eacf189091e977. 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/QM7282463567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc275db25f10aaf4a85db72797ebb2d64fe424517bbebeb962d3e350b5ae5ecf. 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/QMDA62486007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6cad1592798a8a158b613549ce40dff3beb3fc9d604421a5cba363ab63c75c. 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/QMFMF2414949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18e6ada10173bab8386de3ceadec91f796d4bd784359a3c91c9e72bbaea7627. 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/QM6MZ2538164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052a187ae2a8028d64ee41503bfe9a9e4f45a946a839da48f7e4797ebc2b6746. 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/QM6MZ2538124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba37ac4874b28f4dd7f35e11def6172446bd3b97344496864dd9cecd8ab1299. 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/QM6MZ2538153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0456682e2ae165a7235e27a42b642bd6b9f85751bf19a368b1f0ad3ce00bf46. 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/QM4TX2570669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23983e9397aa6085b0699fac0b5e441ab428c27f245d09ba697d8aad395b9ad1. 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/QM6MZ2538152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc275db25f10aaf4a85db72797ebb2d64fe424517bbebeb962d3e350b5ae5ecf. 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/QMDA62486007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18e6ada10173bab8386de3ceadec91f796d4bd784359a3c91c9e72bbaea7627. 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/QM6MZ2538164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7728aec664a6ffc584df28b462a4f20a54261690c9f385ab9df72c329770af7b. 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/QM6MZ2538167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe624d8a85eeb06b9725ce6c5407ed27ccf8c5b84918188728e1db49b5b2986a7. 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/QMBZ92581465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28ecde2ac31d4d16457ac6049ae9ad21dec3cc828d8de2f8a4f9e6f5f641a83. 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/QMDA62534367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe624d8a85eeb06b9725ce6c5407ed27ccf8c5b84918188728e1db49b5b2986a7. 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/QMBZ92581465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe179758da1540145758703483b82ac6602fd17c49a82ca7a21532f171bca10a1. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:57:48Z), 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/QMDA62534347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181d7f819e798142d002d19fc432c2a0c218bc985498008131535cd2eee88d1e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:36:20Z), 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/QMDA62534353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28ecde2ac31d4d16457ac6049ae9ad21dec3cc828d8de2f8a4f9e6f5f641a83. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMDA62534367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6df57913394169eccfba3d5248428ffbdd649e169b1cbe3c5287a81d8155ce. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QMDA62534374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e6d9bef26d3aca90cc117fed9ec621baf2b370f5f36abdc211d56822c1c8d0. 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/QMDA62534377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4587c566949320ea12edc068f786e32580690d9cb03c42ae2f8503daed336ee6. 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/QM6N22302493.