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 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 0x2cbef0ae89f4cca96f591dd36495d8d988adcf483ab3791e21c3b765922de4d6. 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/b28ce266-a5b7-4760-a0cf-0489afd56067.json and https://artists.proofprofile.net/proofs/artist/b28ce266-a5b7-4760-a0cf-0489afd56067.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 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 0x13ff801f23d618c9824b82d4f9b1024bf4efbf4168222b9c5cc4a686a1069dcf. 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/BRRBU1300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730cabe98c8d2a009cbcd4c143f4f7583bf7bc083b388306a07fd5d4dd037dc2. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ITV260900295.
Sex U (feat. Ester Azeredo) [Volkoder & Gabe Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172f2a954df406e42cd971c7cb88ebe09c66e78a4f094000b0cdd9429284a80d. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ES84B1510300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b4fecea5c1f6a1272bb026d9ec96ccb8996abed702fdfd374d74a8cef4e384. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/ES84B1510183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ad4dbae1cb8924b2cdae3fa645630474037c56fc5d069abf0a2f5ecd3474c6. 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/GBKQU1882780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52599a9e3e280ea782ef995e81ffbffcfabb7691f33a3f9ce47bb14c8e4470a. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/AUDCB1701526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6066f5b5942aa5bb9ae3aa37f8814bfcbfb0d96dfc91886ec2650c2d5d8e3057. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BCSOT2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f42a7961bde79e90f07b28169c67c069c8af11589cf4f2bbe27de13423d5de4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BCCNG2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f42a7961bde79e90f07b28169c67c069c8af11589cf4f2bbe27de13423d5de4. 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/BCCNG2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd0baf1d7ef673f3b19e51543d4cc86f04a296229c30b3a5659711c5db8e6a53. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBJAJ2101834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084952763baca26ff293ef3bab2850edf8e9c71dac1d6d5b020e13509d8e045f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLZ542101747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16168389af12cc9c2e12a60a2a2c940172b7ddc6910a177c6b2e937350a56c14. 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/USLQ22180373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579afaadf714968cdb1d327b8001ab6191e6c3178bc00860dc28c9e3c712d754. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/AUDCB1702046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bc7796d40f0961d123358edac7e40fa3550e02991ec24f210390bb1ba657b7. 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/BCXTT2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b8f53c7c394ef17c448b1078ee750a91af7b0440b2159012c9e9e4e685f11. 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/AUDCB2500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354bb58ab3d482ea44e6fd0aff78af042308fe8192feeb436c462922dfccb5b0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNJY2549106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94268b5bd1c1e046dc8006396b9900035bb39f175f2c942dfb62c1515404dc62. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCVP52300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078ef96477885d68b8b713fd99a679dc2f140319dde528d71cf8a73726484778. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DECL81300021.
House, Tech House, Techno Vol. 2 (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c644aa42b4baebc5212399a97a4f520989a62e43ac28c49941532088fb2829. 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/GBJAJ1800916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f8d707c07846e894e66511750e679ae2f54b9334c889db5c4c610ea3afc99e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BCVP52200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903b228801eb2e6066acddb7f9d4c34d86c63d49525e60669430aad200d21a41. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CYA112000977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaff83cda84beb0ea1f8f7d91f2f3b3749cab063f6c59bc6c82749a14a6e3977. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CYA112000776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a1f9d86c1e67973676968224a18cc8048e1bf206b54e473a6f722a0abd045d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FRU981600480.