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 0xc309cfab2ee21cfb19de040a05b5bb9cfdd66eaa05c35743b51426b976ca89d0. 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/a90f1da4-e715-4406-9f45-afcdcb49158e.json and https://artists.proofprofile.net/proofs/artist/a90f1da4-e715-4406-9f45-afcdcb49158e.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 0x3e4a3a4afeab6da5b1a6306e517bda2bf3c628e38766b66a411b64aeac8a90f3. 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/BRCMP9900079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f431cc9342e606909c42970a5ba0f5b16050642c8bc2611ba0da6a1fe16ffa8. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/BX4TA1900038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71972d58fd6cdafa35c200a6961bf933191dad04f0c2253027806c0e7d0f481a. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/BX4TA1900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aa92d7e76e46723a245f64aad4bfee3b0c4a02e783390c8aee88b1419b250c. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/BX4TA1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4176fae7248638db3564b1c65ce94e893d9924b88e02aa3f47c747e5400b2a9f. 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/BX4TA1900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bb1a9dd42a58d83d2f3feeb6bfe7112adfadc0d3d7a471b78401850828136c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:30Z), 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/BX4TA1900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3611d893c7a8e3e89f5b7345becd5d485170a34225df2e90dd9fa36d6817a164. 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/BX4TA1900089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8ddc27f8354d5e36da6728ece90d6215f67b6a283359b6e4e59a9cb833bb71. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:18Z), 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/BX4TA1900114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dfef0bfd38dfcde2a2c6e18449798d513fe27087f55c4bf53f078e966a2156. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BX4TA1900115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dc6045d01a2b6ec7149aedee7b92ee7816b1278bd5d5ec3475f277e39c8131. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:58:53Z), 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/BX4TA1900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a77cdf3eda31751ab68233967d326a0664ceadc5ab4d9045e74c09d4bb1189. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/BX4TA1900117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa4db7aa587f5396d55b670efda9e1e173f1130064aa8747418e403d292b4f5. 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/BX4TA1900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22035496eaf673376b5f11e1f380024aeefa93ea61ad87ba2e05276c74480e6f. 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/BX4TA1900119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73e7a0a4447488a6f18fe39115a117293dd075f36488eb517ac0db16bfe33e3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:12:06Z), 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/BX4TA1900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc40a44b586ff7785603977b0aee18a35ac673a9d6877e7532a27a62a2fc5b4. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:53:22Z), 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/BX4TA1900125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21eab88a78857abd7ea71fa8133ae11f7a7c619defc6133230ded93293cfd84. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:40:42Z), 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/BRC1B1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84443c0c6d46f66d8888b51396b1604943e4ede07c740c54b7658438132ce5c8. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/BRC1B1400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6858172844d5aca1fc36d3ce01fe50ee10f634bf0ce8e33d43c892e3e46fec34. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BX4TA1900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x807603115d5e01261ed93f2cf5a853ebd41d16a9b96fe01cfbb84e35da517c80. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/BX4TA1900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6461b72ee89028f533a14f646c91ed44736022f6372a872a51bd585439cfc64a. 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/BX4TA1900112.
Nas Asas do Senhor (feat. Celina Borges)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424394ca3fbb3b54126ca197af788e95aca6753578ed983f404234a465b7ec3a. 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/BRSME1300594.
A Esperança Entre Nós (feat. Lucimare, Eros Biondini, Salete, Adriana Arydes, Celina Borges, Ziza Fernandes & Walmir Alencar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f54f98997f634eadb13d61845e1dc2fe1741daa4f41f3eb31d5ba41370b37f. 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/BRSME1300604.
Brasil, Música e Devoção (feat. Lucimare, Eros Biondini, Salete, Adriana Arydes, Celina Borges, Ziza Fernandes, Walmir Alencar & Eugênio Jorge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cad492acc0aaf5ed4f843ec8058e2b36bf786234957b89730747e3a99344221. 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/BRSME1300605.