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 0xe3fad10fda0638cf4b955691cd88477250a89d2dc5c23e5e2161d4d754632960. 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/74a985c0-c782-4310-8a26-fa39013a1603.json and https://artists.proofprofile.net/proofs/artist/74a985c0-c782-4310-8a26-fa39013a1603.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 0x01eea61893ae0c0d6c24817a37489a9529f4a7d285ad66261eb59f86a7b61bb1. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZGLM2176500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ec61507f8af9fe315da7cae6d4fefce186a7d25c325b34fb8ca7457bdff6bd. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZGLM2176504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5669c2b4a16399f14f42a9251b89b323a6cf51a941bc0aa1a12a70f40733c9. 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/QZGLM2176502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4476c4b96799a336a658639673e99dda04f9d9ebc2246777f7073461344a81. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:38:30Z), 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/QZGLM2176503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa220400e52a1e4c40820499e841dd5ee34237864b53ae792ebd28769e0f8a27a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZGLM2176501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b2ba84f7d678a529aef0c856c9e48b4996f7c7684b2f6d51423d0027de398a. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/SEXNQ2200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b2ba84f7d678a529aef0c856c9e48b4996f7c7684b2f6d51423d0027de398a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SEXNQ2200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66f7ec0a3e3773f9e16cd99add56586c8106fedc4dbed54865c1ee26da71a9b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:45Z), 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/SEXNQ2200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc005c4ad76b9758f69b4e600aa9b5b13a28fd1e6e58ac3e9af11b440f9fd190b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEXNQ2200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257bd487694a2f6105bb2906d41e0889d1c0c645de8cdd5cf3ddbcb780e90c97. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEXNQ2200506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d70df9f8c97013113b408f8f6a10a6908a4b1abd6c463a5931439ef513ee77b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SEXNQ2200507.
ÌYÁ ÀGBÀ SIRÊ - O Poder do Sagrado Feminino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a1c82dab9a932ce92a6a069065f102a56d171547380f431fc16ede7d9ea0de. 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/BRGPG2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233391d0b02420b6f6182de7f78a72741e90cf859f258508b61c8c0fabac2a04. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/BRJ052400011.
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