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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb614fbc4d2526d316fd2746a21e8b2e7b48f42affc1a825bb109c87f7ca4895f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f33a2be-9c9a-4afe-8c63-c34742a4cc63.json and https://artists.proofprofile.net/proofs/artist/8f33a2be-9c9a-4afe-8c63-c34742a4cc63.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320346db7a56e5c7ec7480637670c9ccbb7b23fe11b6dd751d2b59808beff933. 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/ES71G2145075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb31323d3ad5587f5f814490b3c98b7faf7dabc251655acd18830652fa455db. 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/BK4DA2208731.
444 (La señal) [Shlømo & Peligre Mucho Cardio remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe940f49d4e080c0ee2bcc601250cdddc33b76798ba964a7809474266625d6083. 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/BK4DA2320765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5923944eff1950fa280b89b2e76a00f0664223e34521f49cf133ccf5d66a0e0b. 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/GX3Q92180070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c34cb45ba8d64346b09a8e8ddbc6e0e5f021e4268a43995dcbe9c77212d68d. 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/ZZOPM2224997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5923944eff1950fa280b89b2e76a00f0664223e34521f49cf133ccf5d66a0e0b. 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/GX3Q92180070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7c39eef7ad1fe7628fba6e013a74cf4d323496fb25904ebbc56696d22cc1d3. 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/ES71G2133977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6956ff0ec6fb2f201a223aabc1a0f249c81cdb43348632918439f7a6ff83f6. 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/ES71G2100210.
Apparemment (feat. Xina Mora, Poupie & MC Buzzz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d647a034783fdb021d3ccf32745de034fbeea23cd11dd2c2fdead3f2476161. 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/FR9O62000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648debdf7918e9f07ce73557d3b1f6a20769328ac01fb3170a2bfc9c7a52f0fd. 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/ES71G2055767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b14e48151687e4c9ffce66a9cc1064e40e9e24d588e21108ad62b40074e39c. 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/BK4DA2426847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361a65ac8d294cb7261890bf9c4e3277d50d0a94d18155fcceeb500c2458a459. 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/QZW9K2367518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf73525ff343f7bc1362ca4bec790da6be2e666c56e9c4c5bd6c564d943daef. 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/BK4DA2447420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f36599a086e4893ad021b4843d8570aeafb8ccfb039d75e9b640069e23657b. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBLFP2041019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873a389295acecf934425d7358f9ee33475127c9bf35c97b547d2df16df33bc2. 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/ZZOPM2237313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2150c6e1f99be17325af91b4ff26b35b14a400270bdc6e11435c691f34b212. 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/ES5702200720.