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 0x90fc4a6f660c0345cce156777c515136022e74c714784a0ab6ca695a8dbab257. 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/ef80f68f-5e2b-4ce2-8c1e-53707d5f79a7.json and https://artists.proofprofile.net/proofs/artist/ef80f68f-5e2b-4ce2-8c1e-53707d5f79a7.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 0x2d4e1bc63e2c1d3146acc23499e3e8a77b878e202342f69501e9410ca5e80a67. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:46:14Z), 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/ISV441527102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99b43bd23ea62f5bb01d818fcdb63cb6ad8deaa78a29d0a02d106eef4141ccf. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/ISV441527103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb4c26a3dfbb207bb734656b8897cbfe5cf9fdc9b8594c4dbb6272aee779637. 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/ISV441516701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf6fda5da81be61c8db29bd5e52a04e4a530381d5e2aac071b7278abb7711f28. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:27:54Z), 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/ISV441516703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f73889bd5cb6b120432408f8b4acf86fc87f5fa2a227888e64721aa2a657ab. 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/ISV441516706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc518bd539f308e63a1debc78dd570f8faa7594bbeb45e36028f9ecc5201f1b3e. 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/ISV441516708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbb932416107133eb75623cd021dad5b7e5a92e155df9a41019998307d570ce. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/ISV441516709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e2f7bee76b7de85280b6b7f1bf1899d00e17cd8a7c62654b4fff2e4e4da4a9. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:32:31Z), 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/ISV441628301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2374dcd55709c03c1fd2acbd50e30eb498ec56a003766ec42924a571d20a32. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ISV441740002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae7eb7a9f15c96e4f8cf1666c27df6aeee1199d97b8882a62e5701b30537424. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ISV441740004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0f95e221052bdc6ba4c5007c11f6fd8b06147146cf73fd1ddc67e4cbfd1465. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ISV441729801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e93ac0365b573417d443f19e360f65bbaef1269203b0a3de9c7a64f9f3f35f. 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/ISV441740008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c875d08982d3ef16b6aa8b1d7f2e2d72a9cec50e841759b72600ca5b86266d. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DKADG1800532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6ffa9f01289262abdca07032c18763f740e84948d8d45c003263bdd8798c94. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:17:59Z), 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/DKADG1800536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175df27e48505b56ff34e8c31ac514984b25e3280db62ec5862a7074524e62db. 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/DKADG1900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7392c180734b7f302dcde64e3edd102281772a03b4889a154724450967c7756a. 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/DKADG1900145.
Þegar Þú Blikkar (feat. Björgvin Halldórsson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3801c8c6451837b759e949ead3a2810f3acdc6e314d569a8318b007fc2a4e2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DKADG2000646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9550978d70dcd36040f03b8e0611890b13d5839ec1b0c4ee15255de16fa211. 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/DKADG2000649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83308c6a8c72a089719a26f08b1f423e19668ecc27a30568b2224bac3cbe8675. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:34:17Z), 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/DKADG2000650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e79c22d734f1524d9156e928d9e274576444b7c6d66ec1c6a761cbb3ac7640. 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/DKADG2000651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb3013910d2cd24bdad49976e5a955acd81a43d33aa1b7426d23bf9861668d8. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DKADG2100391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a17e0fdcc1777e9a600a3fba0e1e1f714f629994eb1ccb9e7fb3fa381c4cbe. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DKADG2100655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1763767bc25ada76b5f5bbdb9647992537a38d4d113996e99231541de5ca74. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:01:06Z), 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/DKADG2100656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc347b0516bedfed2741ed117c74ecf644f4ac8ef31429b9a58a1a08caadd1eef. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DKADG2100658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d4e53637e161dd97210ab9506b63416fb42da527c01c75e55b22b04c1229a4. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DKADG2100660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8422d8e12c659702d6627bee386daf124617b94b9785afeb8dc8e8508f01466a. 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/DKADG2100662.