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 0xccb1c575cabb77c4b059584883733ece42a8cb89eaaf0f16eef0d8e7ee478d6e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c314927-b23d-4f77-9136-5123aef7a2e2.json and https://artists.proofprofile.net/proofs/artist/7c314927-b23d-4f77-9136-5123aef7a2e2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Afrocatalans - Hardsoul Emocion Tropical Treatment
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 0xf2738940c7295c52915a6d6f2056ad83dc2c93493c2d73bcb0aac64ec508f163. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBCPZ0501093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513663973378c9a2565bb649e2780a8ed433b961e00c115333db0850ade687ad. 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/GBCPZ0501094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4ee526d2d8d1d2b5eb5de94bfb4225466f69205dabcaf76abc5c819224c4a6. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBCPZ0501095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7064591b06dc4f4d76e9f56b5eeea4c0dbf3b6a9688d8d5e85a366695e8ec7ff. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ITG411600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e0dbdacc7336d0bec44665c8aa826dc91a25175d8607c54e4ddd597d8b5e77. 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/ITG411600035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5383aa48655f66ca8208baa9d46921bffb4c82a6adf861869fd42b07f9fcd55e. 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/ITG411600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feefd95cd32c2f1069c774bf8affe4f2f88c753a59a1dec56e10387bd2a0fa6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITG411600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff261286077e6b82a1bb2a0c76c4f2f8322a0118dc88cb2bc6124764cdf123da. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEAX11200023.
Billie Jean - DJ Fudge & Danny Marquez Mix
Chris Gekä Presents There is Soul in My House, Vol. 35
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec470aec54612b07c57985165699e1617bace07728453eaeab630611adc73a6. 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/CH8081000264.
There is Soul in My House - Purple Music All Stars, Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b8c078a87f19650d6d2d9961a8b82e85ccfc650402bacf94b2bd2c9e3edc5b1. 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/CH8081000266.