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 0x5e965b76449260045ed534c3473bb5f8e917e82e1ce868c0292daa64ea9c01a2. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/917fe9a3-6a09-4ec3-a405-bca554b3e3e3.json and https://artists.proofprofile.net/proofs/artist/917fe9a3-6a09-4ec3-a405-bca554b3e3e3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brigador - Ilessi Canta Pedro Amorim e Paulo César Pinheiro
Ilessi E Vovô Bebê na Gira Geral (Ao Vivo)
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 0x99e537efdd3fc67be8b84162e955888e964c34c5106a11e8d6d7e587c25e1a40. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BXPNP2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf54b4a638e1631aad1c241c2d533daddd5784eb611f6dc22f2f4cd322f85da. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/BXPNP2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f511f908797b1a98f8ba5e83c6400f3c6b6f264397f4a2ae6791308add2b00a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BXPNP2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4660148647ddbc0f3ab5e8d1d892cf4570a505b366b0b7f00be3d70e813af9bc. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/BXPNP2400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22bf4e787c8803d811fe53d58a42077a60d8d6cc511879b2ab69696f3e4275a3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BXPNP2400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36128ddea9737dd05e04265483745126a785f1d9a095ef89da9e84b3b453478e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BXPNP2400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67bcd8eba942de8da078e332fa956ae49706014fe285dd4d2a65bd91de8bfc2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/BXPNP2400031.
Oxum (Ora ie ie ie) / Oxum (Oxum bai le ô)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e15b455ca7f1e98697c48e800bd92d28360211889ed3d86e8eccb3480c80c6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/BXPNP2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcbe98c63367698ee67bb0e697b48edc3c30c56f9bea289ba49c572696665b7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BXPNP2500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93f396c6fd09e866620c4cb5723a76d65dc7838721573ee9cd5461daf692bd. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BXPNP2500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7cac63a63cc633bf8226c578bb5d43d24a44906c59dcf2bce1fb9738c3c840. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/BXSVC2200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eb8b04d2392eed4abb80c6745b164a515f1267e681fdac81015c0252d2c4e8. 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/BRPUI2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88689e1e98903c9a3c3de3555af5965048615b69e7becb978a0711cae3a79b0c. 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/BXR1F1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4354ec512c61d2fadcb6ce4d54c6aa170abe2d0f2ab173f2664ad2e9c04fc47d. 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/US7VG2409977.
Com os Pés no Futuro - Ilessi e Diogo Sili Interpretam Manduka
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501e210a9d7eb849afe3cc47463865384abca335d610492d41dc16e2bf12295f. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BXD101900002.