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 0xed9e275aae1327a6482a244541afb9751e3fe2de57e849b0b3561d31dc77a0b2. 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/d2c8122e-ee82-417f-943e-04703e5e257d.json and https://artists.proofprofile.net/proofs/artist/d2c8122e-ee82-417f-943e-04703e5e257d.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 0x6d140acf1499edd561abb2cac12043e384e4a646b2eac4fbdfa1114978ce925d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NL8RL2430413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0b59a789ab7946bca828afe68841937f2ec2e3f2819c81a581e12b7bccfaf2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIM2421677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c857c4f26c09bf28e6656a133939a6ff53397c08f48108fcb5af8324f21c52. 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/NLZ8W2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ef453d2bbda9939aa75443fcfd890ebdf300e2cd5f108fa583fa26eb7b364. 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/NLZ8W2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aca00910e9f9252e82ca3198e7622d683307c7a06773f846614a2dfc648cfc. 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/NLZ8W2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aca00910e9f9252e82ca3198e7622d683307c7a06773f846614a2dfc648cfc. 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/NLZ8W2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2ef453d2bbda9939aa75443fcfd890ebdf300e2cd5f108fa583fa26eb7b364. 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/NLZ8W2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772b355fad8aca45ed3c90787ebec697760a86db606a1a7cb5af4a559b63e3a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2474266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb2823e57c8e4c88b3bd2349d01da027f3e3f2c70bd5a066fe25a6f59a939d0. 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/USA2P2474265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f4c342f9b9c2e710c4b8cde3dd0565ec274dce8604d2b44d2b6ae3e074856d. 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/USA2P2474262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7773f507e2bdc1f6554a60788b5697cc6520c222393901c1aa1532f78a28fc5. 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/USA2P2474264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59186c5d573359244ce97fa36731a0a1374832ec7292c12af2e0c63ad1d928c2. 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/USA2P2474267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa82da589a563843bb6500aa383e66733ec0921c27e07bcfda185b2e17062a3. 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/USA2P2474261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb3210d4044ca13acfd92bfc225594ab1adc16bca892b0427a4b8af62f97492. 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/USA2P2474263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf262658639f3d4d6cb49bc15a070ea493bd16384b035f58a9d0244e2d194515d. 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/USA2P2474268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302467c6d6e73d240fff31aed0fc91d4b9bbfb0a4c07b411d6969663d0c84144. 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/USA2P2474260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f0d04c9a3835ad8a7168876342cab5f288c188807fd25f9affb0b6d342e1b5. 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/CA5KR2523976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e97434cf68c53e7851244287f7ca91b5d1be722989b8fcd9c1e8aa8eeef1fec. 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/USA2P2509562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfedb3018803a4e4b5ec35f3551533af267a7bf6bc5d1ab638f4227729981d0f. 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/NL8RL2502941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16bc9d7c03d2119f48c9db472bd393fc4520e30f5d0ea28d76280c206bd54ae. 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/NL8RL2504327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfbd8cb3a5573f9ff73f7bbee266368f9dddab41c4a485f0a4c9defd088d952. 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/NL8RL2504328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d140acf1499edd561abb2cac12043e384e4a646b2eac4fbdfa1114978ce925d. 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/NL8RL2430413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b20022f4060e795998efa617d3d1a796b1df58cce68847947dc0fdb4452d46d. 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/USDM32467901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e61f22056a6363ef21e16c4a08e99884d7fdb8784330562b0f7b13fae04542. 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/NLQ8D2400797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2185ee139a029181c3368e917290d85070fd6189338ee62a0bf652e99f7faf. 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/QZHCR2100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50cab44035826422e24e2b612f8e20a31e5208daaa4f147c2381627a2b254fdd. 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/QZHCR2100156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45978cdd66c4f43df7499b4df05c2a31cedb9babf4972936f63262ae628605c6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHCR2100160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ce4da33870c524c15ddc902bae5b5d8facb1843a8778b227f20105c1b86c31. 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/QZHCR2100157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c6775776a40e28437139b666c7a37d5d238952791ef246b7b27482d4d6c9a7. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZHCR2100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010c14b4aa72944e841918f3f5ddb33a7e4a93ba7c56e6f527ae7047f24ec4b3. 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/AUNV01700272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51512e7f2fe747bb9bf9374edc8c9ddc19181989489ff78a4615fe344ec8870c. 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/CA5KR2031638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f73d5ba981f9b3f369ea7e98e36d32bba69434caad7572600ae8f2f6de7e1. 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/CA5KR2031641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c857c4f26c09bf28e6656a133939a6ff53397c08f48108fcb5af8324f21c52. 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/NLZ8W2400009.