Riachão may refer to: Places in Brazil Riachão (São Bento) in Paraíba Riachão, Maranhão Riachão, Paraíba Riachão do Bacamarte in Paraíba Riachão do Dantas in Sergipe Riachão do Jacuípe in Bahia Riach
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 0x9b6b3852ee27446ac7df213ce949f1daf69662690827e3ccad5a3f0cb2ff7e48. 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/0958803b-6ef9-4a04-9e93-4f7d04f4a3ea.json and https://artists.proofprofile.net/proofs/artist/0958803b-6ef9-4a04-9e93-4f7d04f4a3ea.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 0x18db1598daa06a94c4f75a97a5a83d3f02b997402e2fb31a54a0c469c85c5b98. 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/BRJ2V2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd09e823bb6d8f2d6c154c46eacaf09c8a0b3d40d2b63d4936b460b5fc7dc62. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRJ2V2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b0af98dfc97ef813e9f00b0e7aaa667412b3e90358a9557d1ca5a8abd11ae6. 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/BRJ2V2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbb32a9c3fa5db2c4973474feac43e9c8c87b084cb0b9f340298d8cd2ce3570. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BRJ2V2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440bec4c1524a4cc8793efb93a8a22a4fd9ea0a03289809b8092df89e785f26b. 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/BRJ2V2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4508e6e058caf3fa3571b2470e6ce7568f9332fd9aae5cf9686b564a8cc17b5f. 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/BRJ2V2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72054600fd561d798ad4e1e004e2c11288c2d39334f809872581f1dff54be57b. 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/BRJ2V2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4768cc260388f39b125d51b3596576578430135b8ae2298ebf06636d7c8e1cb. 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/BRJ2V2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a07f340b59e76f809c47de1aaaa43b5682ef5758cffe6fca843b497ac212ef. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRJ2V2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8db35c860a529af1f176b4e86da445592d61ba15b819c8d11c485ad8bba5c1. 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/BRJ2V2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dda50e20eaef284b80b8cc868f652e5d97127954678a6485f117f4e62da135. 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/BRJ2V2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e3eab16b7dd1a722c9cefcf89d4f83cf0a0b343642dd59124bd35b807e014c. 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/BRJ2V2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5c567a6143d56c38ffb47bcb1caa397edca113b1516de696c270725fc82ee7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRJ2V2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1df1e55bd824f729fe093e9d069af5a2732e586acca131cebad5076af3c28f6. 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/BRJ2V2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6295c2198b602915168a3a7e27a242aeefe4dced4d780ddc4e0b4bc425d1723. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRJ2V2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58655687733b3efaff372ed48fd49300a22e93a84d233dc36915b3945afb45c1. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BR5IV1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d74f3c2e8c934fd8254f7ad114277502a62a4cf4958ed6edc06f0acdf22a20c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BR5IV1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5ff967155a7f4e66d8484fa81640a5ea1c89d1c9368c279fdb572e88532e5f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNW72244963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6661a2f78e7ce18653099a9473b004fd4427b302e4f56bb3153499a228504b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNW72244964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5ff967155a7f4e66d8484fa81640a5ea1c89d1c9368c279fdb572e88532e5f. 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/QZNW72244963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e11b046c03c2c470f0061c54a9d62ba4a71c6799392b12349372546d93de9dd. 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/BRTV52400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927a0c1b1f0a1db7d48a9a030c5061224b6c87fc00fe9bd4f63ce9cbc7aa8c45. 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/BRTV52400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd041817d6a42f720f84ac3f4e2762bbfee0264ad6244238f9f5959616a14c095. 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/BRTV52400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b581d886761f9cb48015c727264ea688f09f5a4d03f953911a5b2e08abc21ee. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/BRTV52400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe919a205579b67ed464f92d933e3803913af243dc9690d48eaa81594b75bfa. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRTV52400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4f8afa70329aad22e51e75b59110a10addadc647217990242095d06dff5e73. 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/BRTV52400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad5749afe8c04cda6d7a884bf6ba2ad53fb86702dfaf97dccf97084c2a43258e. 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/BRTV52400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec5e0151176c2aa91f14205ed484efef383e530e81137b0d04485909ecc730f. 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/BRTV52400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d5e61b4f9a3cb3e4e49d0ee85c8e9eaef71221ff6374ef6a32a1c5769c4066. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BRTV52400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5dba4c51e9068c187577a98c41faec9bb641b5b1941ae06d7b4b7737f8853d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BRTV52400010.