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 0x0aafb5c468b193bca6ca31f39181ed48b2a4f777e293c41015691277aa2d6075. 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/04dce4c3-bd74-4294-a5fa-5f0dbd51d3ac.json and https://artists.proofprofile.net/proofs/artist/04dce4c3-bd74-4294-a5fa-5f0dbd51d3ac.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 0x334c68dfc0b0f9af77753d935871f655c321227bc203d5b4f881df675ef8f821. 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/BRPOU2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570b9c7232bd456164cb39602d0cc35eb31b1ffc918e59dfc6901af73df700a8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRPOU2100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d8052fe281b655f256357b34d939f7cae2c956c5c1bddd157e3b9c7442d465. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRPOU2100052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06b98b0c4c1e9eb0ad5a14912150c9f9f97dbba8f9f8d4c727b73f8afd0459a. 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/BRPOU2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e470f52dafd5a18fcc0bc36bdd413d65ed2e5984b99314f2c1b286246074328. 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/BRPOU2100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06b98b0c4c1e9eb0ad5a14912150c9f9f97dbba8f9f8d4c727b73f8afd0459a. 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/BRPOU2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334c68dfc0b0f9af77753d935871f655c321227bc203d5b4f881df675ef8f821. 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/BRPOU2100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc285054b350ef77ccde2b1cbd9ac2cbd1b34da4f3ca58add9331aeb16b9609. 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/BRKAK2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0669e28d1fc2a1426ee06d1533bf2d57f7c3ced24ba8343f3f1440f778bd94d5. 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/BRKAK2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44161ce26b1c7620769ec2a283e60bc010570a6a649f2ca9460651d1c4abc1cd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BRFIN1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19099b8b0bad25a7f67cb0a8dbc7d6d9db3af0548f2f83540b27d62f4e561a8. 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/BRFIN1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815b2fe831dc54bca485d342378c0d65fcc6954f3f7a4a10172d6d6d0d9795db. 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/BRFIN1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bce8a7e2f40d398f6489a876349a9edabca60bb538f0abc3d3920a063d75146. 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/BRFIN1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a5285c126db9bb82130f7ef7e66377e82cbc29c22bdabb58e8dccf891e54ef. 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/BRFIN1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc15c3ddd06a39923a965b816401097427ab52475ca04eb736604282384bcad0. 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/BRFIN1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0f1684ca028f74170f38ae30ca0ac2159e5f43d6443f72af340f380a9a8bb1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRPOU2400032.
O Sobrado de Mamãe é Debaixo D'água (Trecho da poesia Osun Hum Hum Hum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d091eb896f8490a6e348052cc4a57885207d4e6b7a6cb1896bb06ef40f3ba0. 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/BRPOU2400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d1039ea8d1c578f1c067fc0b413a4707c0d7b45b92710362f3fbc2c834f5f2. 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/BRPOU2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e875bb2655b1744316b7771e06df98b74bfe01a902159d370c55cf226e4333. 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/BRPOU2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fd2e7413b53b49c8508f2a2b6ee29d6801986db93ce7d63a52888ced9bcfa3. 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/BRPOU2400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9645f28a42bba850385be32ef97c7a783994929e92120ee28c2a71dbd69038a6. 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/BRPOU2400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3820b12192144713086127d3e54098751857c1f4c78f098e123ce347ce4b6d5. 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/BRPOU2400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d1039ea8d1c578f1c067fc0b413a4707c0d7b45b92710362f3fbc2c834f5f2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRPOU2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2bde91dc87eabb7aecec6b27dd6b7ebf899afcacf29f3e6ec47659a8469887. 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/BXJNH2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6439f2c8cb90e36092be359de6d1dae0879201142e7667b8f7191c79f567c293. 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/BXJNH2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f794c2fb62b5d5ad5358d0a25ef502c46047322d0273ffda570f3df855022d. 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/BXJNH2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00119d3760cecd7d2209755c64b8367a52d75f50951736abdd3a727e0bab2b80. 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/BXJNH2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b43c1b6f8689669800940691adfdaf48b9de78775c5b594458e969c896323e. 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/BXJNH2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88501be17d7770264c0474762172501fed037b0a98f954e770d8f13bb732f77. 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/BXJNH2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26bc7a3daa18648e5861f62387c6b71f16f86ff5940520b6f73c2096b62e474. 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/BXJNH2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96e86503d8fb11cbf5099f102c8b812abc69d5455aa6d0026e83cd2c53f3699. 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/BXJNH2400011.