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 0x35a417c242c2c34624b94566754a4145961f5094023d2b71e784a8c93526e63e. 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/a1edc346-30f7-4694-b0f3-5f4617b01d71.json and https://artists.proofprofile.net/proofs/artist/a1edc346-30f7-4694-b0f3-5f4617b01d71.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 0x9016d9b4910e8edcb79f57ccc1ad33ee1d4449b63e3e3d39a3dea79b0669d961. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZMEN2274487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x769ef42a5a6a18bb52c0b9e34a91a7cae09e62f3426e5a1dd1f589d6940b1301. 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/QZFZ62314196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0e8b21ee74bead82936b96b0b9ac562b8a58fc480635e5ad0a4ee59f165661. 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/QZHNB2396513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2130eb53069d6c4d04834238a87415952533512bd7d61cf72a443f93ccb4c2d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTAW2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d3d9d08eeb1c5051cf306c36f7634982946ae42b746cc12150a63a73a32736. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIF2437338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44eb2cdbaa04bd5512f9ecc9cab66850ea841f841e358276cc221cce79bc492. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIF2437373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bd8bbc6b1017e20add9860cda9a5b74eb010e1ca23368a0492aff80bb47e9b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAIF2437378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966eba8d6b61f294b3741a09d9dcb78207ced901592f8ba5e2e6e31c8c040c0c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAIF2437407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737589de09edd1e56fcb55639c29789b711913c697c19751d8551fa4d1fb78be. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/TCAIF2437413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb97da32e45062ae1b00fccd985b9c087892630f337991dd8eb8f451e0947d05. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAIF2437424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca53db3af7df6c4f984870ab336f17c52d616918ff9c2722e0a88651e83f32ba. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/QZZ7X2495583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac32e14007121b4422d28d649e73f2fef366cdb97d294e58dea9fc233e6031b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZNWZ2534821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106a68dcbd0b4cb2bbd4515d79b9efd54afdddbb26f71ad60cf39562a0872a1d. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/QZNWZ2534822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f78c2634c188a809973e536658947dca3f7ac18813fae2255104211f62a69c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEQ2501268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99096dd7ffb8ecebd79807633339766ee75f0e18d5336ab3911d26c16005ebd0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWZ2534823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8907701aece82b1fe642dc40161243e6c66cb6a3aeefb19e303d182f6317fb83. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZNWZ2534824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b039739300c0a075434be5849e68bb315f72bffb7c97c713b74b7f0082588b3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWZ2534825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d371949d8f6e4aef75c1678a58b1a951c8b4b9d5cc58893a52742a1ab48b83. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/QZNWZ2534826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b729042c23512fdb8b976cca43d5437a220c3ca7ec6e920026af6010c3fa82. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWZ2534827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b5b117d3c3848808d128e3d23ca5526667452f8eea6a4ac166af3e1b3e9416. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZWFS2553754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b2f209ddebcf5a993817d0ec277999ef2862c0cb5bb070a8aedfd86f266460. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/QZWFS2553755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930ee29a7f4d43c70c2f6b7d33ed42a3f02e0f53f16a6415119f909a57c848e2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZWFS2553756.
Money Calls (feat. 2Rare, HoodStarDotty & GE3Z)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d12246030d4c5db16dccea3337e6983279c4cac4a7f25195b8d25996fe991aa. 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/USQX92302967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b37458b76fffe1cacc6b78603a8701264f12af1e23c66829c54254aebde2b1c. 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/QM24S2300784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65414ce72475f8f2813efbd9b9d44df00343ca484a494229898a0125ebd90cc. 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/QZK6M2325389.