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 0xf703bde86f5296f3dc9be3dc3375e4188528dc6a8ccb736c8494d60c299bf13c. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e9566c5-9a0f-47a9-8851-b6098d260e45.json and https://artists.proofprofile.net/proofs/artist/5e9566c5-9a0f-47a9-8851-b6098d260e45.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 0xf77750d3d34e4f8f972105327177950f55543652843bfe0422a9d301aca637a7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6N21536854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525d63dc7bf8e3b6bf7e452886c8793bad564c39c09021ad0c2ef855cf1467f0. 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/QM6N21570873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153d89c77d5e56abcd25a81f282235fdd7f5a376db419a35c1038bfa9d833d1f. 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/QM6N21549736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb33b4324be695f6b26f8f4170a6a5ffb53c5e2f4585b5e8b4ce0e03fa4e9fb1. 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/QM6N21596348.
Marca de Gaúcho (O Universo Sulino Cantado por Nossa Gente)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32d523f7707092ea33f2eef32e6d7b6c59724764f0ddd3a2268b4ee0629a4d. 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/QM6MZ1592248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1eb5db2843e2edf2637471a22db3fa6bf02561c85b965ff669be639f76ecb5. 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/BRACT1602639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0a265d05c659d1071883604e6b4c977656fb9309f3d761b6728c1872d8ce5f. 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/BRVR11100638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212f407a8b94d63cee06e326323f43bcd8a1b491e4895dec030c0daef9e8fe73. 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/BRVR11100639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc326bd6af301fadd010c8ae9ca5d1167ebec99a82c3d58512e7397dc5ae92e6e. 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/BRVR10700123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456dbb3a97c694abcbda69402de31fcdc796bdd1130027b22a68296c0a97b234. 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/BRVR10500424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616409124d4b835ae64858addbef0d5845dddc9b07009b41f2665cefbd15ccea. 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/BRVR10900487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b5033e5e8c797c7fea60965c8b7e6346f56a353fe06ae702c77ef2f135aa2. 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/BRVR10900492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd043fa9bae262101b7dd5e8a05e1d3da737d17d60189ff1d36f24fef70beceee. 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/BRVR10900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc65c6da7ee1f4cb16ea6ef14030a45bd6afe1dfb57ed3a610ce3e22682a424. 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/BRVR10900494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f3670925ecee1f91f108a6d2778bc0169aa4f06c80964a6fbb289d54001491. 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/BRVR10500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456dbb3a97c694abcbda69402de31fcdc796bdd1130027b22a68296c0a97b234. 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/BRVR10500424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f6b2f8b06cb95106d3fad9b1a1227b2b003cb1486125041cb5a3d7377e9b91. 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/BRVR10500693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f9539c4331950f42cb9a8d340067189ef8b92ef12573a98f4bb74d9b5a912. 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/BRVR10500752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e431fb181faa7e3d78b62bfdc0cfd7b0f04f90aac3e61909eed7f5a0957738. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRVR10500904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc444862073b584728cfd2fee1b6d26e76cbf0d4b50b0e93591a0374bb391540c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRVR10600130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52675ab9a52b1cb6cce1401ee29b1e46268b5c9f7e799c37aa51c1f45fd0f7ee. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BRVR10600174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe233a2d766a67feca266b1fda16f447f0a3fe5b9812734ff3056f140a6184ac4. 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/BRVR10500929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cfa9f328bfe8bd76a414b5464ee73aad0b990a346a207ae1dc96fef65bd972c. 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/BRVR10500917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4922a1355297fed7865f7b2bf98e0adf52a89c766e98dc862c179157107fc70. 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/BRVR10500540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eace16cad38d365bd461e101352dee1ebedc78b5f5a283eb08ed7691b6f8e6b. 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/BRVR10500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cb01e93622cf5862b096c0ea76d1f4f5fbb33f090a3816c92f8e2bf186f7227. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRVR10500681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074c26daedebba71b8f67bfa7f78ea2c5d52919ddb5cd3276669640456ee36bf. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRACT1602244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220133fd65a46319ad3871f019803f01f2c1e6d9d9975b1abe1832a27a95886b. 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/QM6N21593333.