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 0xba3acdbf21f720f88df675d9417a2423573fa0fd949e5af752559f05cd780677. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4ab2ea8-b32a-4395-8ff2-a0c2b41f4ec5.json and https://artists.proofprofile.net/proofs/artist/d4ab2ea8-b32a-4395-8ff2-a0c2b41f4ec5.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 0xe0905f50fdd65821a2f3eb457b78f61aee5a6a149757fa443745a734a269e853. 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/GBSMU9608329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb2924053005f1311e6ab012167cf255e6e8415aa3a07205f443d065406809e. 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/QZAMM2051431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1095ae3c4cb9284c407ea72d369e55fb64339b1ff413923132e63145242df550. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/GBSMU9808298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e33814a5b5f4b08a11c745bb62eaf274256bb74b040738aba42bcc4a8b619f. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GBSMU9932479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c51e95251d42874592f3129af9beb6c36802a817d67d7758d2980736eb6b8a. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:46:32Z), 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/TCAFQ2134150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa45f69aa4cfb9212a951ff6a05e2a3fa7763d1f843eea784f01a9643adbb8d3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAGG2246025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fa563e8e0ffb3f8b931e0fb22589210dc331b85359dd9951812ae21546fb58. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/AUBEC2112221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fa563e8e0ffb3f8b931e0fb22589210dc331b85359dd9951812ae21546fb58. 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/AUBEC2112221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f05eb25b5fac536d52431d90b23f7b269a94094311de6a5cfa40103e24d04af. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/AUBEC2156647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f05eb25b5fac536d52431d90b23f7b269a94094311de6a5cfa40103e24d04af. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/AUBEC2156647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc6cf2ad80356f7acdac4be9e209b4730768fe50c2b5db426ac2eb7546aab5a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:32Z), 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/AUBEC2160146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a61e0e966140f8bd699a61e3d2d63a4fb464ad7b58fd15665930e5c13addfb1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/AUBEC2166602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa35db517c487b023bf500a8fe580f7ae758d26af2699fc4d777116b78387846. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:17Z), 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/GBKPL2285055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25be6c1e206218110dcaf9a985a58b7506ff1e099e5a447ffba05363042773d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ8A2421286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25be6c1e206218110dcaf9a985a58b7506ff1e099e5a447ffba05363042773d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZZ8A2421286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6285f7457ef74aade607340b05cb75dd8ef11ec907f4021d6f2f293407a9d3ce. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAGG2241396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed015e378e1661a30fb207133e9eb002794d829d59dd568810965e6dd3c899b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBKPL2200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c80a4df1ff43439d700c28912736da04479a086950d100b57d80936b0e46d3e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/GBKPL2201544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dca01013a12aed37b4ff657afa0967f7c73ff5b317e8942320dcb1d04e3f002. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:30Z), 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/TCAGG2227387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fad252fdcc33967b8c49af7a76681187a87e578e04b97fdb3d786be5d8f7aba. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/GBKPL2201528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04826eadce77f27c2720cb7546e36ad4f5d3a509ac1d4a4f8b87d8e570207f0. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZTV32279028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14ba924028650be9057ffe54b296243edfef9a34a332a94b99de4480ca0ec12. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBWUL2327094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a588ca08be61638017b2bd3ceb57550c6ace48086cd14d5c7625d1642349607. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZTV32314568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba191578993d6bf50e3743efd9cab1deae1f30e90f56db3d52a5737c94eeca68. 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/QMBZ92370534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee04d72d445b531847aa44a9652de6c849e6ae30dd2ed48fa6df31e306053b0. 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/QMFME2338487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec1018dec624c8495f8e4b6410bf7c693cea87b07175dde87403d3806958fa. 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/QMFMG2350814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b64bc5ae37be88a65ad810b15a0d9ea4234c36f2ab9d9953b0f129729018907. 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/QMFMG2350770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb868cacc37505ddd25f9d1bb2f039efab14a0745f6f192b0bc725e1bedd27a8. 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/QMFMG2350797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ec1018dec624c8495f8e4b6410bf7c693cea87b07175dde87403d3806958fa. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMFMG2350814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7856c10c1fb648500a08ec23faa1358b61d9b8abfee4cd48776cc38bd7a24cf1. 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/QMFMG2350829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa043fbc0530ac94ce8c55aa305c7ff349935931bb899dd0d522dc51db231e5d3. 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/QMFMG2350760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ffae631b9289b55bbd655502de2e145acc4c161767c325a64e0f4f38d5044b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLZJ2484145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ffae631b9289b55bbd655502de2e145acc4c161767c325a64e0f4f38d5044b. 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/USLZJ2484145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2387e8de6216ec68080a4cbd826bdc238b9341afa79cf9f0adbfef3d8dafab. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QM6P42454906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3966c991823e13e314a4fe8a460b5a7fe6e6498c262dfb2481a2d54f49e9720e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QM6P42454905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba15f73c6fd93379d0583e1aaee79422b6446a8a46a605b13010591324ef421d. 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/QZHNC2566878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd8658995a5cc1279e103827702faafe36a0e4951fc4a3a8e4475f5f2c9c2bb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHNC2565650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03ac73b9b4452921512abbf0f42dc3d3e8621b82104eb4d196e9b629ce90c3f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZZ7Q2563773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03ac73b9b4452921512abbf0f42dc3d3e8621b82104eb4d196e9b629ce90c3f. 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/QZZ7Q2563773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2df420675550462a714069623f3219695257a15836c1f6ba258d1b0e36882f8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:30:10Z), 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/QZZ8B2508493.