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 0x990e365684ede12dc7535259b5962a3b920a00b4c0eb21ad5acd3a0c4c6252c4. 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/ebb077d2-50eb-4024-9458-c0087d146e3b.json and https://artists.proofprofile.net/proofs/artist/ebb077d2-50eb-4024-9458-c0087d146e3b.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 0x88106097ce727d5db48b65dd64eff277aaa04e50507a6a531830811919b86c7b. 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/BRCQE2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66bda14fb8e90493877d9af930708b86f6f771060d4796dd44f27b5b88fc202. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZGLS2031744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ffb484768e28ad9357069bbd89315b9f7b96c81508a64b036d4bb9f0ca73d5. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZ5AB1979486.
Ganhar o Mundo e Perder a Alma (feat. Samuel Macei)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61817dbf7f86942425dcb7ee88089353025a8697bd0e4a103919e8a2a7b11b6b. 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/BRU0N1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23184e6bf83834daeb53499aeb483456c04f4990654348e100fce67325dc34f. 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/BRU0N1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb1dfac0a3d80228a8b7282d9f8aea315d948d1186c93aeeee7362bbbd9272d. 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/QZEQU2114592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f65f835f589782f5ede571426d2db1c361e76b57623383f346db069dac23c0e. 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/BRSKS0701073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aabda3bf7e29fd4faf90be8e1a07da856c0c4ec87177c9c1fb90763fba2a183. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/BXIW82000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c2b528de90abc3e0fbbc48da3b898c0cb59cb64d4033267977a59bf7d1d006. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US7VG1876042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4205f260dc60188e800534da4ed68d36f79c5331c78af93d8bb526b5565de531. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/BXV7U2200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1136418e9c5f03fa4532c75c697b673dd1a66f2ac997c2083744a36f5f308d. 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/BXSMM2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424cd5cd83e5df28e607f9f7f461665c3b1ba38c95b2da720a12956db63e0fd7. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BXSMM1500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cda6c7a9cc0506cb4aff04b0973da6b8d3e2bd4fdb8fb71a41d4ee93a379c9c. 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/BXSMM1500100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32749f5afb30507852fa2843e51936f632324a6a9599e17514671ca78e3506c4. 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/BXSMM1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71abdb004cd5bd83cae4fdab88ce66639d72eadd597d5fbccf00eb4aea1ff52. 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/BXSMM1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b9411849fafc7cc4fae61fdf00584d7c4c93186cfb70614c7e41f5bb158301. 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/BXSMM1500103.