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 0x55115728ad1c3e0fb58fb457e96aac1141ad97a368b0507ab9442413184a7e9b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2ad86e4d-2e63-4a7b-a2fe-a7c021c6ad66.json and https://artists.proofprofile.net/proofs/artist/2ad86e4d-2e63-4a7b-a2fe-a7c021c6ad66.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 0xe3093b3a2cada6fe398697e388d572d088ecea4a235b170cdc1ac610c683be3a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAAZ1141268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161f030a9616973c54e4d3d57324efacda64febecdd781a7ee975cb3dc4bf71f. 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/TCABD1102959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13e2a2a9b6addb01e79e6b2da382b53a0a1be5665e242b5cf55d7f1cc7ff476. 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/TCABD1103006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e03c0582e7f6a9afe2cdcb1b4a43d72bb2feaac0568382fb883103568032ce. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NOVBE1701020.
Alt for Jesu Fot Jeg Legger (feat. Ragnhild Miriam B. Pettersen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9675c380449d932755ed5a594e50497600743f65a1aa6cbbdb703f091ad0b55. 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/NOVBE1701040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d30db11f9dc52708290e762f71e052e31fa5f7b6762599a36d16b75d966b25f. 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/NOVBE1701050.
Jesus Er Kongen Min (feat. Ragnhild Miriam B. Pettersen, Josefine M. Pettersen & Lewi Bergrud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee38cbfb523ffc3d6b9dde59ebbf4e3ff7638dea505b6632862a96a1fa315f1b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/NOVBE1701060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e587e665fcbe18e025974b6c762fc374e0f3afe3738a642da1075a2a5733c4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NOVBE1701070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3f3291ebc2e0d2dec4b315f72362c22fa90cd66b60529679d6525d08bf7cc7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOVBE1801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362b844d0d3a0cbb4b74d27be9487831d5bb4938d4db36f1bafff8bd9c6aecf6. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/NOVBE1801060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6802a8552b71180da0028908600da4247695f98cd28641cba836ecb8b3605c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NOVBE1801080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8989d5e480f26df77dccbd419777fa7297d8c33916add333ffffd4334b79a68b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NOVBE1801110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0edd4a7f4aff11b0eb458ae2fad7232aa80946e92fde44dd165b4c8c76b6cf9. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/NOVBE1801010.
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 0x5a922bda004aad752b0927ef97d7482472286d5d261619c50a54dd62484c8043. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/NOVBE1801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e11b81ec5e9732dea94f357a544ed968a6278af14e8bb86de7e712bfed35a84. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/NOVBE1801040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4e0f1b58ceeb84ad67a27b57df8a2a359f8216ba2c2f1bb5d8ae4902be2c44. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NOVBE1801070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178a96a558524d028b7f0541a3da0bbea176d0ecd1d58803d198127ca66896ae. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NOVBE1801090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c79bacad2fdd628b278f18a18c1068e665189352e3d7604cd183e6e58a59474. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:56Z), 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/TCAFP2194775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db5002f4e7ae0b7f11ff37817fd2ad6ce9b19b7dac2684f49fb03a651a06db7. 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/TCACE1562525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2b8bb16c5eed462e6716603012736624408f8db8c858c8017c81f8f0ff6176. 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/TCACE1562614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad459e0391d07940f50b76f0af3025fd9d4765097dcccb5ea25e31145282514. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TCACE1562627.
Bevar Meg Jesus Dag for Dag (feat. Lewi Bergerud)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f856db91a8c0a491c82f86193cdb656e1d8c5e675466704c8508f45dbc64e1a. 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/TCACE1562659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff0c332e7d864869e1320d47b3b4fb11e227d7684c94e9c18338f65f40ad5e1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCACE1562787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb32845056fc9e1f9cfcea7292f86f5f74d0a198ad38e3097a5cb94a30d619e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACE1562812.
Løftene Kan Ikke Svikte (feat. David Andre Østby)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d87319dacf5298e865b42a9b8cb5694cac9e587c682e29afc9ee896dd8aba8f. 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/TCACE1562894.
Jeg Vil Heller Ha Jesus (feat. Josefine M. Pettersen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979a166dbc4914d58bb379a5e18f08a5f7f7029bc0f3fdb48c4b22c1864ec8a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACE1562924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e38d431d8589060829d779c211ee4ec2396867d876c6acc8d8f0f588c97357. 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/TCACE1562933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e3a53d2189429af17cab14d0dd4f69303b585fdf6489728165bb85d594dff4. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/TCACE1562977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c83c7ca2deabbc0022d98362f7764fe865917c1b128351bfb84e7c44f766f1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACE1563047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcedc3da3e631a433c9d8a1dfbaa7be74aeec0f8154e1f4ab5b4e32ed4c71412. 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/TCACE1563066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c909160d0ee9e2f70204e96fa27621f809bb69714b8fba3493796aed5f748fa. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/TCACE1563005.