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 0x7d83511dd8dec74f6a3f2963547e310e41913092c0c509865c9f93dbffdf04aa. 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/c1e4d8a2-87e9-4353-9b4f-d9585d2da18d.json and https://artists.proofprofile.net/proofs/artist/c1e4d8a2-87e9-4353-9b4f-d9585d2da18d.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 0x0f12ee36b7da66239e050e92426a9cd5f6a20fffc763cda031fe2eb5979eab65. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZEQU2054822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21ee78dc6b32f000c2dba7189545d6e4e23d8e508d701ba767ac5e5237becff. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZEQU2054085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc532b8d87b3b4626a6ceeaa75d83f6e18eda385e5273bdc05b1e74c8204e5e. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZEQU2054088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3a2a87b2a8ef4be20082032ef137730478b618f4848d06de7565a617c69b0b. 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/QZEQU2054090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6a8165c2d18097c187ecf0d27fd8ddc38d27ec410a740cc8c3cba6aa5508d6. 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/QZEQU2054660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8b731816deea273f71e587da4f131e17f2b5376c782226f145f3f2f91f4faa. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/QZEQU2054664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f0533a2f7587ed098e56ded6e7e4bc86d8c349c03519330b9f7db422cdb994d. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZEQU2054665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae01c43c29fbb70b44dfbf3b998fb4f1eec08c71a6f92be71213e8a9ecb20fde. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZEQU2054668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89bd8bfbf339142c9c889ab1347f886b33718a912601d97701a02aa448b0f1e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZEQU2054670.
Festa do Vaqueiro de Juazeiro, BA (Ao Vivo)
Festa do Vaqueiro em Juazeiro, BA (Ao Vivo)
Festa dos Colonos Petroline, PE (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2d416ce3da3cd8a962c6dc8cd23497e6aba9039d2d53d62d604aa89b3a8b8. 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/QZEQU2054671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab2a00532872faf5fc024643ec0b9e6a5e6894879e01df93571c4860213b3ce. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZEQU2054672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19824a76e8c8a239003733b69f9effca782df3cbc2f6dc18574869607ff4f53d. 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/QZEQU2054674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b52cbd24b37b0c9f6cbd83f6eb2a3effee6bb0132137dd4573e9eeccc6984f. 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/QZEQU2054675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84aa960c388827132a11f5d489bf822809e8a6778719a1949ebcf497b829362. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZEQU2054677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8438a5da2e9095bf4e78f68ceb9ebe1a7da5c024ae8704330efd13a1199248. 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/QZEQU2054681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7102c3c746a05409d314d585798587566531fbd023df8415469aa4c97e7a84c. 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/QZEQU2054684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebc83ccdf8ec41384e01b753a10178d7cf0eb14ae793d4452d66c4cf18840ca. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZEQU2054792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad25c53c8da1942b135cdd28622bed3ceaa4ff359913c479d40c970b8e250f3. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZEQU2054795.