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 0x8450971dad03ddfae5b604c4243a3c1400978d7ff851bb994e5a19429e57c7cf. 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/b78588ff-7f94-48e8-bdbc-dad5af677374.json and https://artists.proofprofile.net/proofs/artist/b78588ff-7f94-48e8-bdbc-dad5af677374.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 0x4d590bd998dcfefc5aaae58d5b0ec103f6c8170d2ba8c04d9a896c437dc56a1c. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:24Z), 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/QZHZ41915480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d7982068233df4ef44598bdfda278472792b9a1556eef253a8eca347e803bd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHZ41915483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119be99f532bf17d0e3f1ba4c02d6200310264371b417e927799fd6ee5d006d7. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHZ41915488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfd2dae8e8188a44f1d63b23f29ad6ef1a7f2311d392745cf0ea917c69b1154. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:16:04Z), 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/QZHZ41915489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7502fd323899683067486902ef489dbd95cf8a095e081c897c650479c8fc4f5e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHZ41915493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49addc0222a9718676668952a72d75b7d51d670a9a5e55bcee9657ecdfb2c82. 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/QZHZ41917190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb279ee4e6ad6087681256b44771d9d8dbcdc9b44f575ca662e75500c5ef118. 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/BRJUR0400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a2386ba8ee6298c967a2fa431e665e55aac121f3f9c5e205e59bee0b02219d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHZ41922559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314b7712b3a81e1354bd8e00231a1ebbabaaaa8052246bd8a1bdabc1079780e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:36:57Z), 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/QZHZ41922809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8503badc1274467b09b801f0c086c2256723a5ef9171fefcdcb7000962d1af11. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZHZ41922814.
Juraildes da Cruz e Amigos: Roda Gigante II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750dbdb7bb4230de4a42debcdff6d68ddcb0eb6457e4384fc5ec43c646895c64. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHZ41924394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfc6adc1481a73a0a4722a98e0ee84e321a9757050f87084c2772fa4d030e20. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:25Z), 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/QZHZ41927664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c929048560f25a795c2cfb50c1d3ecb84e538cd7adcc4971dc54cfd1192e9e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BRKUA2554705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04baf77cf5d093ff10ed5fa3e11900ef4fb21e16e85379bff65c5a463274f981. 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/BR3LE2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9ee5559213d1fc9bed203d6cfc6be72bcc667bedd05fe24c280c5ddc1a3c84. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BR3LE2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05049f8e2c942f2230c584409d8c2518fa79d6e09dc4e9ba97a2365209860923. 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/BR3LE2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5b51fab3fd0142c8dfce0e819804b7d9b179f34ac20d1429ed818fe574b4da. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BR3LE2500002.
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 0xf98f28738458b56534162888f2373d4dfb8907eef95aa7d97e7e3e5d3fb0f929. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BR3LE2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80749591f1bcf4071948033cac9c7274a1c1c611f093ff6bf6b9f3ecc4a5cb6c. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/BR3LE2400003.