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 0xb85698681b9bf034cfac0ca340c99f3b314dc25029a85f7c940514d992808482. 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/bd9476b5-007c-40df-8575-2858767a4fd5.json and https://artists.proofprofile.net/proofs/artist/bd9476b5-007c-40df-8575-2858767a4fd5.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 0x5fe64fcbae2b8b13274816c1f3e87ff4649352b8df64c5cd5497c95c6ea02e6d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:39:25Z), 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/US7VG2174344.
Luar Do Sertão - Zé Carreiro E Carreirinho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50633d311400e924752dab1ea10be2c771b40e4f3b1b8579253a8d110693c5f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/BRBMG6100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdc21c8a87bb80fdaf605f137b319a20fe47cb8e38217372d93ca73b0fd7192. 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/BRBMG6100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491670006c5c75473055de0e0aa3a4df40938db403c0eec648c4c2e712033fb5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BRBMG6000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ae6c75379dd5d6f98756eaf018a58b58fea782c7682c06d5c0241dcb69447b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:09Z), 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/BRBMG6000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f505e2df8960ef84261633107e41b35ee4a8833cc97e368d4a728788183bea9. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:22:19Z), 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/BRBMG6000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748f7023434e8745d1932c1df09f207cfff96f66e6ce07ff39195a11458e77e6. Chain 2 (Bitcoin): anchored in block 957838 (2026-07-13T10:04:52Z), 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/BRBMG6000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d8e723ea7396846d35e62339e1526b2e8732d27a236854ebceca3ce4b5bc28. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:23:27Z), 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/BRBMG6200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f2cd6cd01a2ba81fb542208acf1ea633718894f541e3744a7c4fc4d785124. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRBMG6100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7542b2dc949ad3d86f34e6951d1ff3378c3f797463c26e21c50c4a94a810a8. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:47:53Z), 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/ES5832200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6389eeab09eba3e1288abae3e29ccb2b71cdb5ea15e9ea30f3bf2e7cebefbff2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:12Z), 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/ES5832200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b75d41d4bbdc33d04030aabdb86d379f9612c8ddf936f37123d86d943583864. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5832200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b3b4e31186f9ce689b6634ff269d1bc8fd3e5c6709adeb8ab3c30d26f53a43. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRLSR0301715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5cf43ceb54b4e81dc682b4bbb983ff4b8a9c6c7335409cf21cb6fa9aee57aa. 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/USL4Q1923431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ae5c969ab80cba4206e66004596a0781fa618019fa214377008aec8f9331a. 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/NLRD52246335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4e6c07b57a201926b7fd0c97397cf00f2012884dbf79e84563bcab1c92e451. 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/BRRBM2000508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1a77dea576afaffc4a4c3880d994b2a2d2832838faad9e01d2d631fb372641. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:00Z), 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/BRIGE0500157.
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 0x5fc01829fa95a260b427ad295281690874ce065f2868652a2e3ed09ee4c17b55. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BRBMG6000062.
70 Anos de Melhor Música Sertaneja - Vol 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4e899ff3fba213b01e285e5ee903ed05ac013185a519b199c54b81d447b206. 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/BRWMB9703088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c6c15896e422bd084d7247906a8af18bc094b2d9aae9a6b12b4e330961e129. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLRD52246338.