1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa87f3cbc3c9e92079afdd576378cf71d2aee12628e998a8b3f8dfac89d4157f2. 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/4f92833c-a60e-4c28-bdfc-0e07cbc94339.json and https://artists.proofprofile.net/proofs/artist/4f92833c-a60e-4c28-bdfc-0e07cbc94339.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Leva-Me a Viajar - Associação Sara Carreira Version
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 → block OTSBitcoinBlock must exist at that height 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 0x119be498ba97cb49fb7450f2d7145bbdee1de8569f4c4023727e3e3efa9904e3. 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/PT6HD2100036.
Leva-Me a Viajar (Associação Sara Carreira Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bf6a2d96581828550201e2b8548ca801407bb579d14b3712d72f74ffa1c469. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PT6GX2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac6ca0c1a6a03e7356ad2c80b6c18e140a9f0bf0df6fd13ea4933d4d2630725. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PT6GX2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2095f05a10cee4e98748caff69d16b4cf6541cc0c4c5e1dea2b15babb76bb60. 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/PT6GX2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2646f9ca7f1a6b9ec33b7a99c0d571f3c50329789d09a35ab2dc8dd4e41a19. 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/PT6GX2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744ae695b4b044449d105f65ec9e984711279f16e85403a00066217622fdea4. 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/PT6GX2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe818b51c5995db784068cb74116cffe653f4724014916d93a84a02e26a9bd350. 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/PT6GX2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c206563f8af42ca98ef0e12df745ef9fa20b21402c7df0ad8f3aa431494a3f. 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/PT6GX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bf6a2d96581828550201e2b8548ca801407bb579d14b3712d72f74ffa1c469. 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/PT6GX2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfa19eaf71e463c5008ec55cf0b8843e2b0ab5cd261a1bb670f658c17c45db4. 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/PT6GX2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108e4165748d14e14afd640ae4324f6854cb13466683391fa65e844107d5b902. 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/PT6GX2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6347c4b3f848ca1b24b157e7469c8995c1829d0d52b71320d982e0b5a2b473bf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PT6GX2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b86a45ee1250a447384391e4079e491faae86bfbdd818dc42696240b95f531e. 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/PT6GX2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfd1123f1517ac742a993e56d7cf0bb6beb318bd3d3f349a9d58ed4bb23c39e. 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/PT6GX2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f04322c82d48732526845c75f53d1d6c82aff72e5bdc0636f16f428b3248a0. 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/PT6GX2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50e092b00a50901f5b0d91dd547d5a0c3a9f5f5f590aedc40f787142fadeccc. 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/PTUM72100771.