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 0x1b9746e04595c893237d2e356ee1bed298976b54bb70286259048b19392f05c6. 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/afa2da5b-1135-49f2-be99-86ca4578eaaf.json and https://artists.proofprofile.net/proofs/artist/afa2da5b-1135-49f2-be99-86ca4578eaaf.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 0xda5b3297fe723ad12dd72bd253b8e6cd9c113ca6bcd2e149748b3f3cbc895594. 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/ES71G2055845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ed59a486e874a09dcd93daeaf8a29794ac16dd5817e0098918e4b348feaf9d. 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/ES71G2055846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4704911fe5374928596d0bbef64215b6757f551862fa10d3e56739ab08da4a5. 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/ES71G2008894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be749692e084e3f7e03124219e29eae309570cbdd50877f04fa210816152a5c. 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/ES71G2055847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47d78f2989257374f7f6ee9bd5951c63c776ab02cf407e0bedb215048e169d3. 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/ES71G2021195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3d2a480fa7c5500e66a2c67d3ef7ec0ae2d168a589658c3a7fb609b8e8434. 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/ES71G2055850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf253654c7f9d1fb4fe103cbdfb34877ea9731d424a5e5bb95d25b7acb04fb78c. 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/FRX201611471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84b266a6cc4670505a82161ac9ecc7d9186ac144af42a9596e55b604e9b92c6. 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/FRX201611472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ae74f63d334f54b06036fde6fed57a7938e4ac3b327d218bfd7e84fe0e3cde. 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/FRX201611473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a33c46f40015ff3e9d6580731ef8e6b7158d9d07505a30d59483f4532016ec. 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/FRX201611474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424800daeb80f3d4a15a1fb1649c2d0f3c78c09909c70d34dbc2cbdcc6ebadf3. 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/FRX201611475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6277aee4a22c39b8b684c8aad42fe4c06f508d073ebaf37c0e61d85a75556915. 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/FRX201611476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c15d1d6a6e75cdfdb31ad5cde53a1054edec3eedd2fc2f1c7ff2df913df0ee2. 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/FRX201611477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aa08006951494d507e9c14bc9abae53d217d3d842ea2c7529e32c9d5be1609. 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/FRX201611478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f228fa4693e54fbcaabc5937a3e57417cd96c1ff9c5a9206b2b60278d15f2e9. 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/FRX201611479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774f9b513db5bfe1ce7e5835dd38cd9a77880decaf10542f2ea4b4f679bcee12. 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/FRX201611480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2588e9ebcab0236ec4de0f311e686755faf41e030657f5ade41e755b2c86aad0. 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/ES71G1853022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d1f5126b3f5072751134709a2d825a9e8f321c8e579a9583dae751e193b99c. 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/ES71G1853024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188678f37b1a79a1e32e1ef4475ae63f54eb9d814350385bddab5a032a861ca2. 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/ES71G1853026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87a14fd3288a66c3e176fc43bd944a061510be2e375a0957787db2dcca89988. 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/ES71G1853031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc2df1650ead249084921a278a589487e3de4a5e4a59c50c4bac0ca912d6164. 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/FR2X41626608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6388cca9cc910a36606e7aa02532d556cd163bed9deeccb6c2e1de01b7f6482. 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/FR2X41626609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26849d53e31956654871ee777ca8f27b7930a54f65fcac32dc28a214e9f3f9f. 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/FR2X41626610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3903ddd64d4e24c31402895ba83c95ac119991f0490c334fd041bcb2a4bf3076. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:25Z), 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/FR2X41626612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144843ff85f1ea1df13326718e82e060b7604a059e848adc63bac5b3159f1560. 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/FR2X41626614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f307d4440a422b62e67a363c9973e74d79dc37692dd74cfb431d70680b4a39e. 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/FR2X41626615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4b107b637edc644a3d6a43ed10229c39b867ce25afcbedf443fe0c59ce0ef5. 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/ES71G2300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4704911fe5374928596d0bbef64215b6757f551862fa10d3e56739ab08da4a5. 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/ES71G2008894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880ab5bc8d2a3c0abbbade9526b382f330654744377936bf30e0d30050ff5851. 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/ES71G2414340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1717eecdc37b169a89fee84b91407b23944c67069ce1e21b88def7e2cb5b53d4. 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/ES71G2414341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3315118492bf72052b9e75085188d77b53c1deb34130a8b34bdd91171eb33153. 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/CLKT22304413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd97399aa908f06e3bda4a35594ce017a7f335784b97ee9bd10b3dd5f06243a. 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/CLKT22204336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd989f8cb727ea7954409f161bce0f76ce8b97d9e80ebb6ebafc932e83437e0e3. 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/ES71G2414342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d04d54d77fd0b238a38dfb2dc2577da1f04705f559fa8e9aaeede251007275. 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/ES71G2414343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb91a95e19cc115977f089586709f4419faf53c067dc27aa003ebce350b2ee1. 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/ES71G2414344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd135ce13fae7389b18bcdfe70cd7d28b3bdcea275fabb1938a881160391c813. 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/ES71G2339129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008c515ed3e59b75a557c0c3041b85d8c9c8ad7221d96122f73bc0b8250ea342. 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/ES71G2414345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3315118492bf72052b9e75085188d77b53c1deb34130a8b34bdd91171eb33153. 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/CLKT22304413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6c2119ab82557d72a1bda1eba79f93dc7d5b0bac341712f59010d7176ee33f. 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/ES71G2200786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ee560284b366bed81a838bec3be131f708bd73c3f61a44a824026079a47cbd. 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/ART0G2002518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d9a682ac4665400ebee07144d1e726bb16fc512b61b0b431c636e55f0b1c2b. 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/ES71G2138022.
Sistema Nervioso (Compilado MúsicadelSur)
Sistema Nervioso, Vol. 2 (Compilado MúsicadelSur)