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 0xf278b9cd9f368706f90c2e196db206a13f2ef1d943f164d44de9feb5fb3fcfb6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99c67ce3-8982-4700-a36a-0a9b627a74e2.json and https://artists.proofprofile.net/proofs/artist/99c67ce3-8982-4700-a36a-0a9b627a74e2.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 0xc06494bc2f8eed0bda2863901c84565c4303cd132277304bd034ebbc01e0b2e6. 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/QM6N22366452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642908017d5f4bf82ac80c7e26098de8bd481c49fa07bf8f80534e45ffe14efd. 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/QM6N22366453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d20e31a1dbb8446b09ce750d09acb9437ee785fc1d8cea3bb0c90f3457b0b0. 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/QM6N22366455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeacb30d2bdb60184652dd42963ee42dbce816d36fc65f1573a60c91ef472247f. 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/QM6N22366456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47974ba05cfea6233a96c864bfff1a02a6ef286ac1ee60e4c0462ef4198c0513. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QM6N22366450.
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 0x7590aada76b57a8955f72da1a093b066df9e7f5e66b18c27938ed865c3c6c99e. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QM6N22366451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331dd2b4518660a7c306134227792a018562168cacab562ca9b05b4823ce117e. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM6N22366454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff901725e3640d070221b8973914a4f014daf1d644d95f88793d624e0f7bacbc. 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/USHM81970139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb17263fc6ceff7f72743e3bb0b70947dc0972dc2b475a20ee4e0120c1834ed37. 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/USHM81970143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f20d11291244c1c8cefd8183b9bba2bd19c8037e8e65f212bfd81ac865fc6e3. 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/USHM81970147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291b81aad5efa4d1dc2093addd9eeccf3fd994630076bf6698700034cb7f21f8. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USHM81970141.
7: Como Hacer Rock y No Morir en el Intento
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b16ba9c853627e266ee19582ddad1e9571c81794251fdbbd06e8c69bfcbf3f. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/USHM21776047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca15a6c1f76632ff32807f91192374b4cf1e40faf0bfc5cdb18a3a80364b596. 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/USHM21776048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7695afae6d93d60102e16899ae497a93a5e2caf6845be6015e6bdbd5675609eb. 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/USHM21776049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a5abea468e5b1c6df9cbcc68a6cb19dfd19d94ea6d6302b9ebb52b8c5f8b32. 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/USHM21776050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc481295005718724350a15368873c074862e83acd889c72485d74a76ce633aca. 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/USHM21776051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5455b9840168d787fa01a822fb327cdb4ef85e15a4951a3c94599870cec5091. 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/USHM21776053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698b666a6c473fe55b2957d99c3a9953b2cabaac97b33ece29150633bfc00562. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM21776052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0761a3bf6daee0c4ff5776461d82e8a4d0197d38ecbe0f663288dc2521264abf. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHM21776054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046aea3b182a19dca7c1a4041310abbff4026a781b22a559388ce0ccd7e65633. 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/USHM81650694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f39acc71a940b001f2c2e93e8dd5b01bf4da688f5a5de7ef033eb0e32d67f8. 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/USHM81650695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b233bbb66f3f6767aab310c5743f0a5a5de7a1d367d38b375806053b9ed776d. 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/USHM81650696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f079a2bf54ccb0471704c5a4559f778a3bdcbeb2ec011b7077f7b4ae0f1071c. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USHM81650698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf584bc8b4c6de24d15aac51a06f46c77e2c1dfcd78006b974d1d2d63baac60a1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM91640815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa2b628249df5e8c2b8083e5b9e496f6c95194301111e04c6277e0911313990. 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/USHM91640820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642bc26a91177596afa069278b262ae560f0dfb2b06e9c3e52eb1c9f36fe5bd0. 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/USHM91640822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a0dfe2fc8de3b499ed24eed14bc82967d92c71286cc9508323d09b344cbdf7. 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/USHM91640825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c1062d9db92e5f1d7e9d02f77ab84e08f1133481e3520188f00937bbdcc19e. 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/USHM91640826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31a6b058cc7a10821ed896ac7b8a5f0bb9d3ada13b4780203472210a88f9f19. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM91640811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8deaaaf45d6370c11f2ce4f255d78417f2bdddabf4078ea015a74360ac1ebea8. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USHM91640812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68b6e662d6db69bf71c5efbfb8ea1cfb6bcea634c56172d67c12d0d56e096eb. 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/USHM81664829.