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 0xaf42a6290c18e7e724ec785be8e87226ceac72ac655dc706bf91dfca3cf09ba6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d0e554b4-d73d-4eb2-8b5d-e36e7b6287ab.json and https://artists.proofprofile.net/proofs/artist/d0e554b4-d73d-4eb2-8b5d-e36e7b6287ab.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 0xa59fac7ec03141e8c447f68153dd9764358d91cf6494271d9bb1bf020969776f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/KRA302300338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e12f8af359b764ac8b6d0f7324536bb3c1ae49f317cbf30b4c4ffa8615af33. 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/GB2LD2110277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffdc156f3ad4ff3798faff277214fd0655c1f3b2fe5cc86757fb17a28024953. 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/NL8RL2325958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ac7c655291a9287db78c7c3b7ec5e20ad7d998faf48c8b905da0f278ff39de. 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/NL8RL2325955.
Spider (feat. Tida) - Control Freak Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f610d12ba033dfd7f3ef3a5eeee046a4ca74fefd61f7041f4f3b2ad56843603. 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/NL8RL2321230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68088b692e2960694f509d492ba40a611733258e4dc9b20a42b6ad5deda8b98c. 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/NL8RL2325957.
Spider (feat. Tida) - Rohaan & Gaszia Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf53402e2ffe72c30a4095dcaeaac5c9fed02bdb002c2d6d291a0740fd9bd042. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NL8RL2325959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3098e9e25d83d2fc932f4de63c23333ca7d34f8327c88aaa03d9fcd798d19962. 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/NL8RL2325960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc0a8d73b94c80fb654b8e0e88547b8a955a41615ec9f16e22e6dd18acf490d. 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/NL8RL2325961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72b26ace45bbf4e13080ac0faa25f2a3b37ef498182d2bfbd3131681e27735b. 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/CA5KR2466036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56ca5a00485a5510d5cb4091a2e3f511b3e223b10337a05c67dc5bab1ffa187. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2450088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e1124c65cddc8e776f4b5fbb96147c2ca9564bc29d735fc06d5ff8489feefa. 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/QZKDK2211425.
Spider (feat. Tida) [Control Freak Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f610d12ba033dfd7f3ef3a5eeee046a4ca74fefd61f7041f4f3b2ad56843603. 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/NL8RL2321230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4419a9a1c19e0ed1553066669398f24c79705d315c7fdafe7db837ab1f02c0. 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/GB2LD2320160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d23544d30db331806d63d6c2d027a4d711f4fe76f94b2a21f0e903d83639c7. 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/USA2P2328773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb272f44f6f78858de26fe96b4e6e7c271be166781f510055cdb5cb9851f3f7ac. 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/CAUM82300145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfafff5678f38d162806c1a3d280583281458b94e158aa4994a5f03035d6b01. 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/UKU932290027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063782bcff4fc7bfaac3a5d8428722118d4097a15e4385507e1749c019d5e87f. 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/CA5KR2260497.
I'm Not Yours And You're Not Mine (feat. Yianna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203d896cfc7f542b41838dba4980db6fdb0ffa91627113461b73d623b30faf9e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2162368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e824107b5e078941a00dbbe746ed6cb9e131e6d0c1d74271644ffe21167f5e0. 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/CA5KR2117961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82b6cc39475b47421ab3518e63718ce08fe1dd76d2a15ccd3513bb3a02317d7. 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/GB7YL2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2c243554038532690d7f33328485fd680bcee2b28ac0794d22fbfecda16657. 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/GB7YL2000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5513c6739c1486431efc2db02fdf6ea5b0009a3a92e67b551dd4017604476c54. 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/GB7YL2000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188bb45c7051c3a54a10976009ab6e3f6e32670fcfee764ddbea41e06ef22a9e. 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/GB7YL2000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15713acef2efa32cbbd11c9be950abaa6e95d8d9c0643792be98d2050b18fab0. 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/GB2LD1900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614b2b95706ed07d63872a3cf001b117d6b1f84606f359757b811a0a81d2de18. 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/GB7YL1985701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc936a236b03a6808ea0409f329b8616136fa8822fa18a2179c64364d0bd903e7. 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/GB7YL1985702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56c4083e37dc1576b719e3ffebe40dcb6ab7ef40d15ecb16657680978c5738b. 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/GBKPL1951753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f9c94e8997287bbf9192b0b8da28873b698849ad73df3f248679bacf1a2bb3. 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/CA5KR1923096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af154fa187dc0c2793b031e65db661b444fabb2185daa1c7a302661538a8f7e. 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/GB8KE1859039.