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 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 0x7bee5e08ed7bbfcb45f9d00304584f082815cd0f471f00d35ec05f5ad8036800. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5ef0256-abf5-4f09-8254-dd15a8b5b327.json and https://artists.proofprofile.net/proofs/artist/d5ef0256-abf5-4f09-8254-dd15a8b5b327.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 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 0x59fd698dabd998f3a42c05a147299b1570b0a00a1f2c34ebad0b32421697506f. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USA560890458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c5710a3b28fc2b6a37e0ca550d75cd18c714be2624b36a2acd7d07ad68382f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USA560890460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe3cb28ce7dbbebd9f3923024ec7862b06495317496609ae2ee60b6e2a8f865. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA560890461.
South Africa's 25 Favourite Inspirational Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaef1da8f81a5356d5eb2bc6a0887b3fbb7e2d557d4929e9fa8178662da12538. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/ZAE530800307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8196aabfdf8420f1458236a2f8c30dd76c38cc59ee8ce44620515624b50263f7. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ZAE530800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100743fa12c1e417b08710365d03d4fa3c02b8b94f55034f93c47bd639c18d8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ZAE530800313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63426aa28d745515d692eeefbdb0c8b4409a110ea38928a3dbc7b0eb26a115bd. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/ZAE530800315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95a13abf8857f249ba1b0b541a88a59f1454bed5a24519791dc7aa24963ad5b. 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/ZAE530800319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd47ae498c668e8b55fe9939a8ae0b7625b3ce1ada84cb6c7e7ffec6cad2fc30. 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/ZAE530800320.
Die Begin Jare... In My Binnekamer - Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332c51e00c3441936d8d737add588b7dd63553452e9f73f43291b311d4b73814. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USA370923361.
Die Begin Jare... 60 Minute Van Sy Beste - Volume 4
Die Begin Jare... Woorde Van Bemoediging - Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45795d13a790ab3a5884f7b4a249084fdbd4f4ea5e1f536cfdc552ac36565a37. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ZAE531000324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1605ec2a323468ed8bf816a77e599931e51869ae238e4c1f842daf1fd3dab11. 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/ZAE531000325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c70154802bf13136e0b283f8031d1b590656d5956201835ec3d43f459a88a25. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/ZAE531000326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f086c672a5bc76543818c5bb10af343720f1bc39d33b89215ae43675d4ae47. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ZAE531000327.
Mag die Here Jou Seën - Verjaarsdagliedjie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae79e626ada97cd30dcfa5e5fc2a015c5f8ccfb9d78ec3101a936e33b3966e90. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ZAE531000331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd536665ef2305da834a623acacace9fc88ddfa6a54311f455da758d9e8ddf2c4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ZAE531000340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43863fb04f8e4c38b8ddfcda04e919188bad2d642aeeb22c75413394ac7e8ee. 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/USHM91773586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a52fe04d3551e1e9db1f357332c81fbda0ac9c9e7028f1f8cd9ec4a32f74ac. 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/USHM91773588.