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 0x6be0f62c55fbb0cf243f6d2294a977abd4cc828922b35b0cc416b6c3ad2eca0d. 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/e7400dc2-1de8-4337-aaf6-d312ac0d1ed3.json and https://artists.proofprofile.net/proofs/artist/e7400dc2-1de8-4337-aaf6-d312ac0d1ed3.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 0x7055f265cbeb0ec87a504e7641b6b4704bd5b0ccb21b70585edd07ffe03025a1. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BR15Q1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe24918eba437de1095ce59c27caf38784c56478635ca5f5e8ccf50fb909d1a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:22Z), 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/QZ5AB1639742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e068c61bd44ff007843757e1d31020779153f2da50d0e32690fcd4eab888559. 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/BRVWS2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19199151f9443295736912ab2a6d8be89a1d76ead0fb2aa55c6ae41285298c7d. 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/BRVWS2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecad60328008454c4e0154ea5758917f9464556fd2a3ab0202124c123feaf14. 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/BRVWS2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e706a95ec79882bad1207d5ab728f456f1cf01a22e9c2c2b211a120abbe9e4. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRVWS2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ec58d5dce659c8a371cda10104d31a3bfe4372c46f9894f80b47714c901ab5. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BRVWS2000007.
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 0xe36eaf147ec973e0247099667536f29d14fbd0d403a68074ad7bba288eef5f72. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/BRVWS2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39159a462d58f933b5f233ca63bea3185d74a7debc1926727e3f96e77cf5d0d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BCHIP2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d59ec8ae1eef1b08dd02ccc9292624bfecd550e9775fd5d6cb976391defd801. 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/BCHIP2100035.
Traz a Estrela Brasil (Copa do Mundo 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceabc1df3a98a4f67fa8afbc5e5e51e51b3cc85a038af7a59da6bdbd71c9469. 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/BRVWS2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce8fc9fd7d59c451ba50cde77946ec895fa2151a7479c2eddbd87c857013ace. 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/BRHCL2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723a240525f45640cd5f4d15c4d5c46ded3876bebcd4d92c7fb548bb2daf612e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BX1TU2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cf53a3c0a42bc084ed3de884a77c598afa8f0ea4273a490ced21d362942425. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:18:19Z), 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/BRVWS2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07d14136e17a4ae17b081c96da213ac9eb6fbcc5dd49e83105a1fa0ee64fe2a. 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/BRVWS2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23135f75f6a35d3bbf1a3b32d5d6c52d1106ab750e80f59aa9f99f1ccc32dfe. 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/BRVWS2300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec39041e09a2b79298bdf1aa4f8f184dbfe594820ba914ab36e6e29033d4b2d9. 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/BRVWS2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6dc65a706cdaac8887a1a60563a53860b0a393b31a4ef25fa86350665ba79a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRVWS2300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25064b33ea390912b87ec707d761c9fb457d15c8e088ae70c4955336233de07b. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/BRVWS2300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17251c3074673536ada89bc44d36a835f2cec2b3095e5129944a8dfedcfd73fd. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BRVWS2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0960b899e2e54819e1e54fb9eceecd7bdcbea0c4d3deed6f82c8fa1d05e26a. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/BRVWS2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbc292d1eba6ed5b6e45e19b74438010be4f1b5240fe59a5dca2d4e971ef7ee. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/BRVWS2200013.