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 0xa20f6cf0b5f546815657f72602a2612112dfa13cff73e33fc2f3a007998bb78d. Chain 2 (Bitcoin): anchored in block 953754 (2026-06-15T06:45:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad6f8cdb-77b6-492a-920d-8249a3d5df00.json and https://artists.proofprofile.net/proofs/artist/ad6f8cdb-77b6-492a-920d-8249a3d5df00.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 0x3b5872a31f7abd9a35e67073f245f1c885ba381f16ddfbd9863b71e14b82cd07. 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/QZHN62560247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60bbef3a64b6b44971bd0cc76617a8b0b5f15301cd1b5bcd7f1a1ec6dd0ca90. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:03:43Z), 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/QZHN62500417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828a1185b66452fc74a5fba8d07c359ae0cd063f2621e6c5ca90eebbe9b6fc68. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZHNA2562616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dac84d91665b4f1144ddc856f5f6d0b52436944d469db5c9ee9bdb602d630f. 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/QZMER2565117.
Alle for én, én for alle - (inkludering)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696613047d383e0ed3f9475377ac22c9db33f813d6eebf8eb93bd8872184b6b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:59Z), 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/QZMER2522616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c984efdad6809a37937f919d95e15bb05d06eb508824bab18eecbb6f0a1c56. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:20Z), 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/QZTAW2534752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e82ab5bbdc5809cfc0bb253784b50ae113160c90316d21fdf590cf5820466fe. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZPLR2500797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b5f10f6eacdef036afd9afdb86244aff2ff1e59833d8efb05754943adbc91d3. 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/QZNWZ2598812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d0c13b5e8fa145fdd1b0d69955fafc2708878fdf2a363d4674b61ed45dd480. 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/QZTAT2582630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e7bf8edb4e95ee7d6de8c20248d0b6c2dfc5ebc66aa99410072faee0a8429. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTBE2525609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b802ba2da5197a8d4aecf85e593104dc3d0091b39b607109d769ecc22700180. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTBB2580780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a1745445109dab08bbaa69aaa4f0423ed8e7b370e08695fcd9f60f26bbcc7b. 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/QZTBE2569661.
Lille Petter Edderkopp (Spinn bare spinn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a681e59961fa772d1cb3e6dd1df7ac4bead4a0ebc9b87e5c07a1100a56b34d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFL2515996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf951d852743172604f92928412115563ae2ed5c0c05828a65700cb053620641. 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/QZWFL2516005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c4ad609fd9897633a2019cdef3f3b99a4fc8fc98186fca459b6273fa756b52. 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/QZZ7P2504305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bdf1df21fbabb8b53e039f7ce8b68452793ef90354104c7db80f99c4fa67d9. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:02Z), 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/QZTBD2556660.