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 0xa4d2cffdad353ed680903a3a03dc3a3e2ec65650647e9c1f18faa715bb9f318b. 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/6ba27510-328c-4a74-b89d-329fa13ac745.json and https://artists.proofprofile.net/proofs/artist/6ba27510-328c-4a74-b89d-329fa13ac745.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 0x46eb92c5eae024001313121328f3e8d200682e1bdb1890c9518b63e367ee6443. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZNJW2293144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b53b6f6dc88bbf8d8b75eecb8c510bc7373497963a67ca55edf4663d0fb6ba8. 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/QZHZ52286475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e206aa9f996008aea6850745f5593263b78167c927994da0a5690d2ba9e947. 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/QZHZ52286481.
Pamela Helen Com Jonas Benichio, Vol. 03
Pamela Helen Com Jonas Benichio, Vol. 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549c0263f34fe72164c1215dae6e61ba7d055f2008bc6bb53d63932ddd0ed781. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:25:22Z), 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/QZRP52527063.
Jonas Benichio Com Eliseu e Jessé, Vol. 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeca51b41684b7379345a20c044c4c31522beeeadba1ce137e79e181a9108dd1. 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/QZW9L2241201.
Samuka Duarte Com Jonas Benichio, Vol. 02
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a4989749cc190b3a4ab342b4c9745d4bd00fbde80128343a76d31e7d5bb152. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:22:02Z), 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/QZNJW2279062.
Jonas Benichio Com Samuka Duarte e Eber Maciel
Samuel de Camargo Com Jonas Benichio, Vol. 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf934920b1ac266607062be467a8e43ebd993a118e7fc18d1c00de1911aa3ec4f. 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/QZHZ62224211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606d34db6c8cd71599e07ce3c0a5f0ee19d41d538952a0e7781038bf8cae3dad. 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/QZHZ62224213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26575266b52ca863d2b9b74effb0405849fa3e110cf5569622eeb4deb78dfff9. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ62224214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed7a6edb74aed7d70adf9f893f0b84b5b5c68705954a08c5a05ddd34f849c6c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ62224215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3904365f734569544598c24d8be6121b6e48a9287faadc2bc835530419333151. 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/QZHZ62224218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd6c7c234aa6c364e6be28047d4fa3b4b22a1fb98cd560925d24e5c967b535b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHZ62224219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990fb9c4b08af027e5fb8096004e8d51f71b6c604feeca5073ab8c6fa78d5890. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/QZHZ62224220.
Dayane de Mattos & Jonas Benichio, Vol. 03
Samuka Duarte Com Jonas Benichio, Vol. 03
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccedc56a36d829aba1126bb876a6618ca151d2f1d5288154931d71255f7ee3f3. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZNJW2280484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cac4d303045d7add876126354c46dfa156ad0b0c1c6b19cce3a2b8a95e1f3dc. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZMZ92260889.
Jonas Benichio Com Eliseu, Jessé e Vanderlei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7fea652f6e9d779e6b7753caa71ff374be0227ae30ed868a7c829b77e24197. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZMZ92275870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43152fc76dbdb32b8dfca86c1fe7373df3f8af8bd7fb58c16cb8fa30cabd2b3. 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/QZMZ92281910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71408dfd51265f9450c1845d33b988df65ea4cc151a34032bdb799368a3ab8a3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNJZ2205204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826b2bf791738edb0a9264016644504923ff99b9733ef0e7e5b1d324086fead9. 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/QZNJZ2205206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed3c40928e4b15b4ff0e68bb74b8ae229a27196601fe1b13d256e7c5db8e0b8. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNJZ2205207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45971c8d361777c5ca4e39024314a8cb3e990c924dbf2d8bdb1deeef084216a. 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/QZNJV2395422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126bbdd54e4e833fc87de35d04d8f1b7e4661276e19ffbd0468c585acb640470. 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/QZNJV2395427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d03b492935fb26c4649089918c0af60c981154258626cdb2b68a39a9de512bb. 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/QZNJV2395432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8063be91a45e0cf0dd942003da98341f2e0206897d64430476a57fa1c67ef3f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:16:12Z), 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/US7VG2422992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc1075990c927d6f0a981a421898151cc7d2c9cce7ff6d364b521b63060ef87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ42251814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0353122a3ce51c1d28417c4d52d3fd261fd5b7ecc55e4c97ce717879ad4d7ee4. 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/QZHZ42251819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb8823e8304c763bedc78248c107890030a7a85ad8559558a1043292ee5d579. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHZ42251820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79bae5d729cb591accf775573b4bb3f8b16c244e3f60cc3626cab2716fba1c98. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/QZHZ42251811.
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 0x1d97f9dd8320c2ae2d8fd50d1839b6625c59b5f58323be38a891cad7fff77cc8. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZHZ42251812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5072582fc38e8dd50b4b55952cc8bc40cd98fbe1e25cf295ab67b1757f97dbec. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZHZ42251813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290996849f08550138aef57e79fb02842cb8c429c9a4b80df9fcc09492db8f83. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/QZHZ42251815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa740cc3509bd0be3f59813320ac424b1bb0738b263c66037cd90ee2a975efa9b. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZHZ42251816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9436ff4978abc416a10fda42ab0d5bdbcb5388bc5dbdd573ff7d2369aaba08a5. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZHZ42251817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6156f75debd17c75069a0716f68380c17b697fe3e97207fcf1d3340558667590. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZHZ42251818.