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 0x5c410a40cf83d8f040ef979f627041ff123efaa5739b41647aa9af94504a63a4. 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/21ef26a8-6324-4751-a009-d1844a5be7a3.json and https://artists.proofprofile.net/proofs/artist/21ef26a8-6324-4751-a009-d1844a5be7a3.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 0x2f7dc3256c79eddc70d14611fb0ffe85348526046a419858758b99e0abe5fe5b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZTAW2333942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4599861ed9334f202626cdf9511ec6e932c0db4a0fbd43c22bcb7828a632615. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES52367529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d26895a4eb102065d8c1d61cfd5e99dc1e267fdc64fcd88c6d07844b88101d8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHNA2380203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2acb4f7b1cdf907889d083f773b56ccbbc1bb490adbdc84795efb0146c85ba0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTAW2333943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf243a5e74a4ea83dff7f9148a77f997bf765c46828266d60143642c6d0da9f1f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6L2381660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33b2a722746feafde360d0ac515fd9dd7cd326e4fc76ea7ceefda7e80888e24. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTAW2333944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632e161c305ed6b2fc9223a7ee830f32483061124cb8babf7a6ba54ac585273e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ42351893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf243a5e74a4ea83dff7f9148a77f997bf765c46828266d60143642c6d0da9f1f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6L2381660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4599861ed9334f202626cdf9511ec6e932c0db4a0fbd43c22bcb7828a632615. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES52367529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d26895a4eb102065d8c1d61cfd5e99dc1e267fdc64fcd88c6d07844b88101d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHNA2380203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632e161c305ed6b2fc9223a7ee830f32483061124cb8babf7a6ba54ac585273e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFZ42351893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632e161c305ed6b2fc9223a7ee830f32483061124cb8babf7a6ba54ac585273e. 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/QZFZ42351893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444a4d2844ff104ad74afd801621d42517dcbb2775c493db2792b437bb32a171. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN82236562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba3091c66c54a92de3ff27052c139e89e82511eb9b21584dcb463e244c59094. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6Q2255063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0669d5d97a6e656e81e2eb1d61f8cd50842d4e83af8a99d2a89b6e277f22e5c. 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/QZK6J2250195.
Jag Vet Inte Mycket Men Jag Vet Att Jag Älskar Dig
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdced259498a90a00547f4e6ab8dd12a1bc20142cef6131f5504fd5fb2ec632b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6J2250196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d70c88ce32cc5780a2e528dacc3820d1a3df3679acd3fe54e239eddaa1977a1. 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/QZK6J2250197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba3091c66c54a92de3ff27052c139e89e82511eb9b21584dcb463e244c59094. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6Q2255063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444a4d2844ff104ad74afd801621d42517dcbb2775c493db2792b437bb32a171. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHN82236562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331435d81d0534f68e04da7236661aa74c6de58cf4c1fae2f200223f4cd49ce5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ22232630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9d6211ff1296cfd52ed2b4f70cb80e8acdaed28d90905049f13e778db29d2a. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZNWU2197552.
Snälla Storebrorsan Kan Du Köpa Ut Från Systemet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc5544a22eaef0ff29366a584139e72db9de53c5653fb5b8f5b9b5673776919. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZFZ32017892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd99d0051238d083c7ec4b143a399b86a53d60308bc907285cf437186db0ac84. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QZHN81917755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069ac4e41fc70a283d3f75ee0e0f384f70cae623632674fc0fd43bfd77017a52. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/QZHN81917756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38864465ba7199e6f2dca19da6bcd77df3b32b4ea3af8b659da0b3d49f0a2631. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN81917757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16cd4690a79cadbc54e3ecf9f3b89eef428d81a78cdd2bb57224d934194d2289. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZHN81917758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680ee4c54321d4e7ec59bec533fca8b26c146a306a2536b17727e34c1cf7c7ba. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZHN81917759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaac9dea4b1f6200afe7a5d1c8e3632b516970bf8631cc5eb45a257acaa7278b. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/QZHN81917760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe225e24ab35eb249a075fedbf384ae781ab15afc5fa090a666460dd7560bdceb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZDA61924628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed831a466b8cbfab3a57ebbca2b55d50009d86bb65b9a6c8e7bef5c2683e8c0c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM2PV1759974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0246927302c63f8eff2fcdaaabc5d7fbede87b7536f349830e751ac5623f614d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM2PV1759975.