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 0x3a056364e3b7663f6f4fd0051d1facd4156179480faf30a3e8bba1f07b86c65f. 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/46154464-a676-4530-9b60-d5fde762f020.json and https://artists.proofprofile.net/proofs/artist/46154464-a676-4530-9b60-d5fde762f020.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 0xc31a1077dec0d4e43cf52956e0d75efe950ffca08fd04759a3668459a8b5ff1b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:09:33Z), 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/ZB7AB2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a2ac7a964f58cb5fce773b1b49f83e8535447e4cbd86c85e5def3a1f7d11bb. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ZB7AB2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22708fb0b695a2712fecf7d0452977e35fefb7de148fb2380d0b7ce0e3b71a. 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/ZB7AB2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed77421da5da80176e14a1fcf6e59b984ba1ab60233a62c360b51c30ef59342a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ZB7AB2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ad9a5dd01ebc7d454e7058479662369047329e8f19023f042d796c4a167f11. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:27:38Z), 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/QZWFG2306640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dde26af90c3ef020693af3717eba68279ea5b27d55c7ffd52b41e1f61a4005b. 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/ZB7AB2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55c0fa8cdd8ce033cf1c3de81def00afe96f1f3da425a4d139dbe24daed5ec4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ZB7AB2300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92a9979669802d0974ed8c69b4cf79e853831640d1ab2ed16a720ffcb5f6521. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ZB7AB2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404bc4765343fcba620a10a314e3dba521dcb3c9a3c706d900bbf709c857f511. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ZB7AB2300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6854af74344447dbebf0c25f8840eafcfc08f9a978b5ae8a316e3d38925f2d4d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ZB7AB2300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3a4b35eb6b43edbe3ce4285fde7f82a6c14046d3afe780be27be76f686951e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:56:13Z), 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/ZB7AB2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb057cba00759511e3e966cc99639d5d2fd19890eec03a8ee1e966bd27de4fe63. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:54:08Z), 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/ZB7AB2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f02bf98fe304a8ba59bf24dd541a8b0826ffdd086044da1dd7fe3789357776d. 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/GX9RC2312504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9bf026a9460a6466b6ad0f7ebb6bf41430a30adf57897f616c55eb9fb849a1. 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/QZWFG2341279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa68ff5ecb0bbefd80f9e043e0e3da84b7a8e3fc3ca6113e9a33a63c36ddc25. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:28:28Z), 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/QZWFG2341280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe3d1825206b785ce21eab81b4e9acb0fc341fdddfcc97b68fe06eab44f42d0. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:50Z), 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/QZWFG2341281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c7a9823fb7f5d0ecd3de879319cb8bdf8e4b3e7d35441c631c0af8662503f0. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:32:25Z), 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/QZNWU2409045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7445f46bc28ef9df0941c500a8a13e2f20b0acf3f6cddf7a4031cc5e26e829ae. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:24:12Z), 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/QZZ762461490.