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 0xcc381d208b9d803f145112781ebf28ba8549a1003f79bcc6ea3f20fe62964ef0. 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/f546547a-4078-4190-bec3-86cda904460b.json and https://artists.proofprofile.net/proofs/artist/f546547a-4078-4190-bec3-86cda904460b.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 0x6d54303dd4fb9ff44b08aaa2d7895219402e5db05ce6dcc1259fc8e8c0d15c65. 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/RUA491808227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabe07ab6f72f040e2ed876716b79102c25ef9d482aeac3e7f591b44be0a5c09. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:56:14Z), 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/RUA491808229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3256c6beddd4f17063bcd30474a38a0158550f243cd0b81436faaba9cc899a4d. 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/USLZJ1851132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fac88ed8d53604e9cf1fe85fa18843ef8447fd586cbf8181aea3ed4507fc4f6. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USLZJ1851133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8983c2ed088b6f440eed767b602370c09e2edc0ec6d64101929ac4e5d7096678. 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/BXU221700104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fca468ec0c5f1742e3524aa317c5dfe75fb373d9a4da7d896fb5f5a52f8f4d3. 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/QZS652134913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10733131a7f4d4376a976976b82c6417020119ee029d9dad4466ef100638eab. 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/GBLV62202210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4686e0575e32d49f016559d6404c2324e31fc317a13857de27a7c21d0f54ca16. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/DEL022280020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d36bae9ce69075f96aa095af70e1575128d67e91812d3e678805f6d1171d52. 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/DEH742228971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad32b0c7bb850f12c38e68b99554be287e11499283f65d7bc8f75aa2ab9a840b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEH742228973.
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 0xb584340a8810254936af99c6648c3ae987555d175fb856e864d3e3b211c4c0b7. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEH742228974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81bb474c13b9131f7a1e829cb3ada698c0dfd2b024129764607d34a61e86e51. 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/GBKQU2326733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc841f6177443597d0ae29411945db2b5f774d26d2a45c7e146423cb041fbd7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2326734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f90ebf9da1b4410aaaf7986cfe475b0d6e1878c2b619c430f87fa7481a7bc3b. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBKQU2326735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6b8232ea3e89dccce2457486b98708a6b232e1e65ce44708a9fdffd851df98. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:42:39Z), 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/DGA0L2364773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c298de0126ebbcf816ff76ea29ea373991ca4bb5aa850eee7819707a677b881. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-20T00:05:23Z), 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/CA5KR2481813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49ea4b72cc0a1f3b235d24b295fb1df0aade696ebb50535a416a394c292932b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/UKEX32461917.
Na Poryadok / How It Was / Passion Denied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688d074ca0825e932f2846f11556f10c34e179b62c741fee621ca80809411e62. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEL022580021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bc824dc76d22f0eba99c271cbe990aebc6af09ea88e7a8ae6e2eeec2609ba3. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/DEL022580022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477fd17d9c26054961aab8a9c4a5f455df3d7532712c0b901fe5df4a2fdc053e. 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/DEL022580023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa570a264197885a7d05401714360df6ce044f051b3ee4b92e772f7b581e43a2c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITBHZ1500761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893dcb76602d18861a71075c443cec3ef850ff3725f873b0d4841b611b0b2d62. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITBHZ1500760.