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 0x1fddc5b74aa20e3949f8e1a0cb1f21687d86f7920dd17a964323f1d5e58685ed. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb0e73c8-b69c-4f5b-9779-35ba844273c5.json and https://artists.proofprofile.net/proofs/artist/fb0e73c8-b69c-4f5b-9779-35ba844273c5.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 0x4311d3922c716edfcb01d63a372801abd3df443c1e172ce5a53aab9147ed55d5. 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/BRVYI1300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec3b6f25e289ded13a989853ab96b0ebdc60a75487d3c149a5602a4272663d. 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/BRVYI1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f84f9c4af589dd9d01455b879434072e3b27fd53a6289d41d1d65d433b6b2a9. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/BRVYI1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d74050e6c28851a3b14204efd636bfb8ce696d7fd6973fd628885c780a43ca. 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/BRVYI1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041d839d57993432ebeb8684d69f0ee2db051c599ec2b08557925b838f59c40a. 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/BRVYI1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58aec9537a630a68da89367045218fa9e3d7dd2b8594e4803e4e6fcae7cac86f. 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/BRVYI1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b6da9eccd1f05f07a89b39a4bd737683e52352045f80b429b67dfea930213e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BRVYI1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8808238509e092dd4f7da067e6576e5294566d8c953a356c0a8c28a942ec86a7. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BRVYI1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20d1f2f8e9f20fa5986360bdf4f873e80443ba00d0202650ff2c78aa399be46. 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/BRVYI1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7d5033eb955b8294f89b5a8840b7bbe9376752d0bc8aaf9a7df8ccca62a3e6. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/US7VG1527112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a8ff23446ad7444382d30defd0e371d9d9bf7bef3024ef36cb6e309c6a0f91. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/US7VG1527113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2faf75f257d8f4b557e35d480b78399a88860254500851a24812773da99d83. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US7VG1527114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186af7c1f85a52652728339b78a3308dd8abd07436db5ecf78a9f446e1f60cb2. 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/US7VG1527115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb314c707c71814981304b38f3c3e672c092a3a5e2ef5a8c13040c2c9bc19ffb. 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/US7VG1527116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8fcdf9a84807c1b26b03b902efa41587122866ef28ba4946a4f0b93c493797. 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/US7VG1527117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb16eebaba5c8e41d2bb751b48cf0df9996b1ee8f3760716762e8d821f3c4b7. 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/US7VG1527118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a2ff0131c6112a15c45a698145536c4879db224ae1b96a80d246ba6dbd47a3. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/US7VG1527119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185ccc8cb5555497603149b40396e6764e71f0e2d8db7bb4a05f361e6406d4fc. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/US7VG1527127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93949ace6711f32408527388f4ebe78a2e797d089b7f209729b4d8c7e7fedc44. 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/BR7JX1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6caaa1c59654a2f1a1b526e8e8f8f79b30c341765f46b1882eed514efeba3a7. 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/BR7JX1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d01d654b56074345746b35283f66a33f7a0929d0793eee7a8446f1b219ac6f. 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/BR7JX1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a4f7f480d7265c978d62dcfd46162b671d2aa22b0b93808829ad1b78e6dfb5. 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/BR7JX1500001.
Fuga (feat. Lay Soares, Lilian Soares & Simonami)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96508b551f4f7e34fe169eb42eac055a075d4f473363ec214839399a8e73069. 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/BR7JX1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6028d3e8e9e09e89c932bd71e01d98d7e8242958c4fa9a925a8daf6ac21b59c2. 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/BR7JX1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13276c23039a60a377317d53a7e96789ed668f20f6707eaae7316baf47ddb96. 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/BR7JX1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5610765c061cfc6b3d0b810f292da7abf09b18456fadeeb316298f56b1f1a2. 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/BR7JX1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386d7dd0a143ca09ab0be547fcf00493ce2c1f432f97c7e36dbceb25c38b1afe. 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/BR7JX1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbdab69980fbdd0315c65f60510dbb39d2b8cb7c9b0a3e3ef929a0113c4f78d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US7VG1511375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2b722d6948c8244aae79f6c4d79e98475c51db4bac6de15a8f9aaf2c9ceddf. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/US7VG1511377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a82fc89cef36475db630889ceb25fea1edfdfbdbb79fa4626f15b94c5b9808a. 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/US7VG1511378.