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 0x8d49ae8f747d2e88dfa06d652a90c07d7309cc2612e17906652bd1a6d2a7520e. 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/f73f511d-93bc-4c10-a69b-d6aa5333f087.json and https://artists.proofprofile.net/proofs/artist/f73f511d-93bc-4c10-a69b-d6aa5333f087.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 0xe671b46f10739ae55ed46728fdf27f2093f0071fcf66004f3c8fd40970806976. 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/JP92N2252527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0375d1d76e7668ef98f4d3632561702453e63f700e3658cc13895cf39bd80c4. 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/JP92N2309268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e0a9d9d4f551fa6746d6fa29e72f82cb931272799510a17a788267d2e5fb92. 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/JP92N2309270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04a236ff8a3a4ef7f10416a974619ad484e6ddee6289f27754fcb7505602c33. 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/JP92N2261581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04a236ff8a3a4ef7f10416a974619ad484e6ddee6289f27754fcb7505602c33. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JP92N2261581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe671b46f10739ae55ed46728fdf27f2093f0071fcf66004f3c8fd40970806976. 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/JP92N2252527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6addaa11fcd048ee1f244912ba46b20d6b09218a51246dbdba25b29fb76ef5b8. 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/JP92N2240285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7885e0d445bb8dfd568487c7369465d38c717a212398eb590aea7934fd21fbee. 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/JP92N2238914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae64e311a2cc1e6d4cc194847f8b9fff97cf143a9c98aab6f08ec50b0b2d4e43. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPB602079124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5dead24e6df5f73a625aa4d7afe65e8d5346b78eddb0956bb08debb6a741b9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPWP02500598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280af1809abbb1dbe0bfbb4b58e04dab3ab163ffbfa334c71050261ced5814f8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JP92N2511065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126c3107f146a17fa9aad78bbcf20b9838f2c56c56a36ed38faa43498a6999c9. 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/JPB822500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61d31bfc9d34c81d0b431536ad6756d149bfc0b81eb3fc6d28c4932a36e4528. 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/JPB822401240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49939839e58846e2dfb808163ba310ed1accc8d88e4a5377ab53d992a319d8d8. 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/JP92N2445371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c27e4cbb24142466f9e08f50522ada1f1c0e8d36d5c662ddf3110b01eebe924. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T17:47:31Z), 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/JPB822400590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915870d00cec178b3b125f8a94f59bd36eb2daf5317a2d8a746cecb5bb4a6324. 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/JP92N2423222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2e7dc64e1a792b854046f4bda5813fc48aa34e6f022eea9527849a9446ad49. 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/JP92N2420049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda4d8b3dbbaf9b5eb8557dd09a43cc9c92b5356fb0f543ff9130017b5c84bea. 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/JPB822304750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c3cc44e6ebb789ccd167f51aa45daded397304760b333c7f4157805b7ebb7. 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/JPR502402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6c88df1b36a42f8ae33f46eb1d18d7ce4f3b178baa88f6279744247f8d1124. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPY492300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f3b5daeed0da8d4305e3e37ff1955a4973ddde1518293fb2c8c7480ddeec69. 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/JPB822300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07909cdaa875dacf4956e50d87ebad23570667b3d0d11ff8713ac62514fd0a26. 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/JPB822302550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9230510d2d45eb50855fe27adb568fcd892d7cc7b06d050e1364d8ea98bf39. 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/JPB822302840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8e9068c083b48c34b39398eaf527dc6d2535948f5d72604895ce1a870c966. 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/JPW462307914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f3b5daeed0da8d4305e3e37ff1955a4973ddde1518293fb2c8c7480ddeec69. 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/JPB822300290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097d58f170a4f5d1c01a15fa5410446083fac3668c3c07d242bf6137c2cf4c66. 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/JPT592210515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6addaa11fcd048ee1f244912ba46b20d6b09218a51246dbdba25b29fb76ef5b8. 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/JP92N2240285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097d58f170a4f5d1c01a15fa5410446083fac3668c3c07d242bf6137c2cf4c66. 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/JPT592210515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c8331f6a694cdda87f4df10f7384fd5014a42f17479c164e1f78e1b71c787a. 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/JPR502413250.