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 0x1f5660a4a922ddf3e39d9af0f0ff75ef756ec44b6186921740e75ea384f21e9f. 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/60bbfa67-713f-4d3a-ab58-2f6880708531.json and https://artists.proofprofile.net/proofs/artist/60bbfa67-713f-4d3a-ab58-2f6880708531.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 0xe395d2bb5749a163f3cb2a12fce88bfe97c8013394dd0fb8532afe84e0b28194. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7221500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703477e93ec1da3775cded51936f5a2bae530f00921a2e33f5c58029087fc311. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7221100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf89b4fbc0014172fd434806ce51215d055df04686a9b2f7ee88c2bf1e43612. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ES7221100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e042678e56521402375af386380773800e5af7fbef566894798cbeebbe5c2e. 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/ES7221100040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x613ccbfdeefca30a7fb26c8ed0b9bb248670a218eda74f5e617cc6e66f0b876f. 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/ES7221100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2018f20e0a75c4fe9375e67275b4a071c46cf5a6b440f7df71d887fa75b277. 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/ES7221100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ca969f90d670757eb12ea42f99fd0ff969a231c29cac6c65a6e4c8e43dd10a. 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/ES7220900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a5f836e35ca4446566dfd90d0233e54b782a2d85c488372fea85791817d072. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7220900003.
El Eléctrico Romance de Lev Termen y la Diva del Éter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4276548d8d20791a724aef6b6ccaddc3d67a1222fadda39544196354c96d100. 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/ES7220900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b702a0dd5363cb60628cb525f3788a976586aee563134d69580ca8155e430c2. 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/ES7220900005.
El Exilio de los Invisibles (Long.10º 10' Lat. 29º30')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e6f681850c70d9f19b996e517164ee53dc7971863558acd37285439a66cd5e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES7220900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03f87d60c0f8c1f94da3a75855d522168d1b39f19626df644c641fa04d0abc8. 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/ES7220900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6670ee913c9fb5501916ec6b723ac05f94919a3b0181eb4d2e2d656bdd429acc. 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/ES7220900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e72196e7011a7c7b37655e6c3566a4ca4e99803d51ca3b45ec4b0d6128d873. 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/USX9P2005194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0bb82862df1570f318a55fe05744312acb8046c26baba8fc06ffd51eca3425. 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/USL4Q2045180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f3e0d03174db42c216c73ad43716ac68203ba686b91ffd429caff3e478b975. 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/USL4Q2045182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44ccf198a17a98d61348151fe9b1420c35f95b280540547b31f1b9a0319e993. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USCGH2084222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d0e4a8ba0b0190fbbe0d9ae4d94f9f0de4263f4ee1f7bba3acd243c5debeb2. 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/DEY471880081.
El Eterno Femenino y el Sexo Del Universo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fbb85ebfee7fce35bb041d6d182c87f6fc3cf0e36bc6cd926db210246f3efc. 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/ES7221300004.
Cápsula del Tiempo 25 Aniversario Jabalina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb693ef9d62a5508e8205bfa2dab03f8750a44e918c3d0b254a89e485c8cdc00a. 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/USY242442521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e0168625920a5a6632e8bd10a6ac45d8c9118be880c18dfc9d757506e1a329. 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/USL4R2414786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88e0168625920a5a6632e8bd10a6ac45d8c9118be880c18dfc9d757506e1a329. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USL4R2414786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb693ef9d62a5508e8205bfa2dab03f8750a44e918c3d0b254a89e485c8cdc00a. 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/USY242442521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26f7e6e9a252aedc62cba90a8964617a01b436f3d6109b1ee8eda0f328cd624. 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/USCGH2556308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc9112fd3c46595621ff64eb1662e58c8a3553109f2119980435ca062bc3b0. 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/USCGH2572324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb15de4eb17480811756e2aae9bff7852a6892726a25a66d65611e30ccf31af. 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/USCGH2572325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c32c6b397f99ee50687846b547d5fd4bdaf0d72f4adf8a8a0db04ea303752f. 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/USCGH2572326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7ce2c8684a7a71ced43f97dfb2130dfd56f47a9d363a270b703bd687a92ae0. 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/USCGH2572327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653af843f7d089fa17a1a032b280f282005a13b9285922db28f5770f94958548. 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/USCGH2572328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0970e8a610c865d6efd6f887dfdfdb1ca8a8064d5f95c1ca1799fca109e7401. 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/USCGH2572329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707ccf3f8a7b84608f064a1be33dbe8c7908128e1809e361a16b7effa9971f2. 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/USCGH2572330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26f7e6e9a252aedc62cba90a8964617a01b436f3d6109b1ee8eda0f328cd624. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USCGH2556308.