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 0xffd76a2006e830f6d4a03d22755860352242d705d88a91bf5dc0d5a104d74e0e. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35f275e1-1de2-4684-a6ec-660f21e16e70.json and https://artists.proofprofile.net/proofs/artist/35f275e1-1de2-4684-a6ec-660f21e16e70.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 0x9018aa777236f5f7aa3488d4c15977d38d4a201419bfc282c11b600688019dd3. 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/TCACQ1658330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b849bb78654c8815898c59cfc4c0d580c829dd84d72b56da404556239d73fd. 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/QZ9Y21797568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e61254e2551fa820dfc762635052c0eafdefb2cb16157789dc1c8cb733b9f57. 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/QZ9Y21797569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37186e9440fde0fb4f4b54aba51a43890fbec99ff5975a543671738c0779ac56. 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/QZ9Y21797570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283845ed077e35d90ccb935173e8d11df195a23ee0377e8a5bdf240fa613ff20. 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/QZ9Y21797571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc2602386f8817c767337e25248794a8fa1a7116b3d5e277fab12e767dc6b19. 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/QZ9Y21797572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9d963caed62af8e21b8c8fd9fff676ba36b57c8a29164caa9eebf84d990fc6. 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/QZ9Y21797573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eeabf8f0c61cb21602391acd0671582e14b80a89456ab42275477b1696575b7. 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/QZ9Y21797574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf572d05855be4268fe0428058bc00883cf97da3f8bbcfc39aa1effe428d7e3d1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ9Y21797575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a1242a194d1f129ad26f72888fc31f6d7d93101393847a08d08040a9e7e947. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZ9Y21797576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694572190939c7a17d3eee0943698756e7b67f4afa80957f0c3a4dfa45a763d2. 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/QZ9Y21797577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059f7e1cc5cc1f98c14e5389d0558faadd9c62455fbcbba84a8e77e876506be5. 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/QZ9Y21797578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0790d815079ec384f20fd82d7fabc81fd9042dfa0ac0abf066e29676f9ab99e. 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/QZ9Y21797579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3515474e48891b6197df95c4fc3d6a325054218949c4711999f4fd77f0b7287. 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/QZ9Y21797580.
On Fire (Drug Dealer Girl, Pt. 2) [feat. Machine Gun Kelly]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60a0790e7df461c0fe1ae3a66abc7ac9058078c879371f7856c3982d9975f37. 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/QZ9Y21797581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb39c49573b9d41a43606902e1aff193cb11202a94f79c2854ee8af21e20c80c. 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/QZ9Y21797583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38282356d573e1ef33cbae4b139fd35d1785c331c460692474edaf143d952037. 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/QZ9Y21797584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a45acb2d08fa16814cfe82f0474bfff8cce7e19e49cd0fd384b8e1e496c73b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZ9Y21797585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee467748fd4c85ba94d81bcad3c77800725ce8e4f11d3cd1f4ed6de6bb73ac27. 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/QZ9Y21797586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686f424c03d1bf78d41d8fc2563685446c333b971c57e6d5bcd972b3f7933280. 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/QM4DW1718818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0176dc6f00cf3c8f530d189abad8b5fe2e120ae750de113bde8ea2dc4d00abb. 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/QM4DW1718819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8d006d93f7201cffed58b27e0e627246072cf8421cf1fc229d4dd87790eef3. 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/QM4DW1718823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ea11cc6d490144b63f59e9fd4266a71bf2593db90dd4de17ff5d26d8876aed. 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/QM4DW1718831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09537f8b1d0a756fa5fe43403dc232efc003c1de501f79866307261f2691d840. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QM4TX2481721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5528921945d456e1cef2727d3b466abd0448529b3f37e7ce5afc85debb502e6f. 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/QM4TX2481723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b72465431eef57661bf3751b838c887eacf178f712b5d9955a5881d3527aa58. 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/QZ8LD1987120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f5a4e1656ee3e88c916aa096a8a342d8dfd1c8dda141db7ceb1abd13a423ba. 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/USBAE3364151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857b4a287cb6526dcd005c6b967e191ccde85232b2839fbf5ce8e1ae56f8940f. 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/USEE10413343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3da9c6ba1eda73f3cc4c88d99db7b24028753273e0c8b804f98ca8ce40a7d7. 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/USAT21502771.