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 0x0e3a130621eda73c177402b16937311bebe9956ba560cd7707ff6265dc5e044e. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c0675f0-61fc-4854-9458-af5624c77d47.json and https://artists.proofprofile.net/proofs/artist/9c0675f0-61fc-4854-9458-af5624c77d47.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dust - Ben Arsenal and Saved by the Rhythm Remix
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 0xb4b74261cb59522367ff971caa5af8f974cfae8217c0f6223c701655191a504a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US92U1907874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34758a1940973e015c61d1acd3705229d40ab69dc7d55be1e9fdd3bcc57611a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/US92U1907884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc54c39564500bebee89c1e82b86435444ec742736248775fd01ce34dd07bf9a. 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/US92U1905928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0e8d9cfb5b9ffccd245a825f9c0667d3624c8366f24ed9153a9a10bba9942. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/US92U1905929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133026f070d4cb8b8c7b7c0bdae3c38946c258e50b6fddb6732481e0c0ce1193. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/US92U1905930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414811bd9957752f958a16c1108bcd1694ef975c3522f8051699e63b193550a. 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/US92U1905931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92987d517741f02a5e6f743b7b43661892c12a4cdcb4ac60864a804ce50e3dd4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US92U1905934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148fcb66db25adf54522e9800c430a315b398156155f7599f6e537b0285d75c4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US92U1905935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbec8be6908d790dacf06c6d5700eef558dcc782071c1f021fa876a732928d1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/US92U1905937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d22e2fdb539d49f55eb660146542d7450710c1ed74bbae07b698e0eaa99c13. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZNMT2458881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd723f23dd1051451c87c64401b8c05d498cdca44ed940fadb6c08e4bc8311796. 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/QZMEV2473790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa97f5e8dc97ba8409dec3eef42d20a54be8b5352a3b84800518cb59ecf3a84. 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/QZLL92451267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e2ee0f7e844bfdee762335414255c76789f6aefb5c9e1694d78eb8d8191959. 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/US92U1910709.
Suzanne Sheer "On The Radar" Freestyle (Philly Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86884189e459217994fdd4be34c3877965e5ab97acab2b2bbca298db6a107218. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/US92U1909453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433fef235fc11c1b832532ae3b8afd0e5b59c35957611e21e3b489655b7c3c6f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/US92U1908845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b76a0f71cf9d2681917a4dec710eb42b5a0baeb17aea8a9c682d6a6449397f3. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/US92U1908054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966803d74356358a951544bc199e0e2193e0cb0086054f43e4e1f8613b6e1cf6. 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/US92U1907426.
Girls On The Internet (Matthew Law Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade0e8d9cfb5b9ffccd245a825f9c0667d3624c8366f24ed9153a9a10bba9942. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US92U1905929.