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 0x81fcda58076fcfc34afd4539adefcb67d23f236298626fc0af3de472d86e857e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee7fbf75-6c8c-4c1b-8ae5-7f521e0587b8.json and https://artists.proofprofile.net/proofs/artist/ee7fbf75-6c8c-4c1b-8ae5-7f521e0587b8.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 0x409cd8fff44282adf8b9b9ba5f27c83d9ed8182a7485a892797a678a56193523. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BRAPI0602424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0148430c0bb58c7240f8451fd6a6453d0209d0ad216b4214fac5320bd0e5de12. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRAPI0602425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664156579925ef3b07c0707a063daf07717ce7eb968129409f78c0bd980dff44. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRAPI0602426.
Boi-Bumbá: Festas, Andanças, Luz e Pajelanças
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702f152fa23a8f260d262ae41b97b754dc73eba98b9d51360cf1cf12582858d9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZGLS1940668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2387e9243fc2371171d20c0f31694dd86052a2d50f7efce6c9fd68e56afdd3f1. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGLS1983215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fd9b4255be3747fd0540c925bda5895b8c5f66bb78c2f3ee1f074c25e4e958f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZGLS1983217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78fe1cd7f16e85440f6b666bc2c6c6a2bbcbdceec5dd4c42ecfda62b73e8840. 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/QZGLS1983218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b811da15e0a8e3390723f080424c423320e82b46d8b7e874b9059210d0efb37. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:08:05Z), 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/QZGLS1983219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c150d75c78fb645001139929e8f48af92cbd3deff11c0823e7ccf4443a002a. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZGLS1983220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0363b87f56a0567fe70ab263cdda1ef7f2b3b58cc6895f9546de2a4ad82e610f. 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/QZGLS1983221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ebe0bfdd31c8f1ffb1f0e49203de019162f2bd92e5c2d0848ff6e49e9dab0c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZGLS1983222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0259ac30a3b1c5fba6a96a60cc55a115f26117384ab9bcc762deabdfa405d900. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZGLS1983224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115345bdbb7726107379449fcda8454dbb42160e942b71a9c4d61e5a834626d4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZGLS1989750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf34c69d91e65af32945eecfd0a2969c9a5ae5df45f36fce9e96b0906299a14. 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/QZGLS1994153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01152bcd1b23f29f0ac12354f1266838733ff3ff5623b2c4c4bee258eff16ca2. 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/QZGLS1994155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b3a34a07ccd5de6811cfa0bb48c3de30d06b3a8a47c0af9bffa954acffbc1a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZGLS1994157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562ea573bc7a1135e0a2b3fec34442715d232fa67d13d253f02b2fbbf413f11d. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/QZGLS1994159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10e8ee94550cc86c0d64619b2b09d8083a99beac6a2e9d73ad20d06996b10ea. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:00:34Z), 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/QZGLS1994166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7b898b0fad2074c3e2bc572ff256db644ac71806df7c150733b265f7311dfc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:50:40Z), 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/QZGLS1994171.
Samba Enredo 99 e Samba Históricos na Voz de Arlindo Junior