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 0x69c7e4085f5334de1d701224ff4dd9b2b932a576f0e27bf5bbda8c222a53c9d7. Chain 2 (Bitcoin): anchored in block 954573 (2026-06-20T15:45:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4f01d70-799a-4cf9-a169-1ff1b58f834d.json and https://artists.proofprofile.net/proofs/artist/b4f01d70-799a-4cf9-a169-1ff1b58f834d.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 0x470a2b8fc1a2d054c681ff50d369c7f9ec8643a3cc3787dcada56ce364b02acb. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NL1ZN2302546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d347e404d1fbffbd74811b1f07cb09027b5d8feb25cbfebb4744440eeb9e315. 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/NLE802000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4570eb3a34ade887608be3a4b82a277499e87fc25d34ec444073e46c8828b9d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/NLE802000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c3a8ec6c99586e1ba2a1366019a26c901156fa67755b8600821d5384a541bb. 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/ES61A2222921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9edc8120980e449b47530d4e8399842db2d36850f7caaa84f7bfb10803078fb7. 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/DK4YA2130901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc29243e6a2feb2f136158e8901cf68e69b6b300cab03f9712fc25d3487c2ff. 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/CA5KR2124203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60590135bf56b6717e6313d561db71fe30f5b224356e2f64bb6443edc9b5c2f7. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/DK4YA2018201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7122a68a1be71e3da999f982a17188c1f1a106a63a70325125e6bbb6244f7757. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DK4YA2007701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62401f474097081ffa6d34b9c8ad871d8d89eb1b432570fda4e90ce521a6cba. 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/GB5KW2000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5486794104f9b747adb25effe73a0cfe3a73f48820c30738310dac0870ca7f7e. 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/AUFXV2000129.
Fireball (Big House Radio Sessions), Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa407fe655062e1ee7bdfe0b5211233509620d9e065ae67c29bdfb8f72e97052d. 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/NL6WK2500336.
BACK TO LIFE - SAM OURT & TIM LIGHTS REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70118f2b76b2160cf622ed68b8c22e39f9296e5f29949c9e216af4ab68b9a6. 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/USNPW2501039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2848ba28611e5b6a9de2f2d6cfa42be5734a757acd8fabd7657409568dc70a. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/CH3132419586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1eaf074f37b445f4e72776e2ee1d6b56363421ab26ca413a6d7fa1159b40fd. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/USNPW2501036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330d356488bc865577d9c16f4d1a0cffe52cdcb40cdcf587840fd5928d774084. 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/USNPW2501037.
DESCONTROL - JULIAN SERRANO & JOACO OJEDA FT. FACU BLASEOTTO REMIX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3979d7f6b81723c8335aa8c4b8e7623d6f721a330e24a141674000eab9661e13. 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/USNPW2501038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b70118f2b76b2160cf622ed68b8c22e39f9296e5f29949c9e216af4ab68b9a6. 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/USNPW2501039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a61df9c402b78c2f782cecbe2390a84f2cddf508e15265578bad6aaa206c44. 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/USNPW2501040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3966c01d04189cb0abcc8034d31b4039492abe641bc14cc218a193d0c1838b0b. 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/USNPW2501041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd805d1e4c3eb9708e419e955fbb9e3d593946aaaec2b2b21a924053fb79d145. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/NL1ZN2503614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e075fd9750423a15543ac0c3d2ad3134fb755f3582b7f611de87803a0a9d826. 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/NL1ZN2000505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c77c10ff3d5e94875f8ac2cf998a5f64901cc811d1ab82b4c8741428f6432b. 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/NL1ZN2503523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a2a6d85ab81af550a7d211c9a0cb14de7ff07910fe18cdfbea3e2037537a1b. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NL1ZN2503400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05d544f4487b341b12325b4649a012dd15364764c281805a1775e172b72e6e2. 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/NL1ZN2000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a03f663d87bb9051f9d0d11e33c6199865b35cae6d2341d847d85c7f24f3347. 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/NL1ZN2403371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36d866fe5fbf3de9aecbc6a217f2780882d19db17f581fd15140726065b4d15. 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/NL1ZN2000970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49c10466633b9ea9b6d36887926620e26d684514089b7927ef44a38a5e0d49b. 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/NL1ZN2503536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe836fb5c7ca0ff863e21727147121ed8520d3d43e46a4109a8b435e6594cd795. 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/NL1ZN2402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee241052eef4ba736253bf7b03587b81547d884117691dc056737745cf3e0739. 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/NL1ZN2201767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fa031ffbf491e501fc026b801ec73e879865f49fb9f86c7af6997da13d9e95. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NL1ZN2403323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57989eca1047cb93261267c81e24443b8f7b181eaf93299264a6f1a09b3e1175. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/NL1ZN2403124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde35d3f27969e730715d41449276967f21adfec8f29db67383668a4431cd353. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITP582300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e122ba7beacb7dce8220bf2aed6f20b0cf0aa864a1cc32da445f5e892cb087. 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/NL1ZN2201771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec611004b3c434a98acaa236445ad6cd59ffb16fbbddd260c40f2f9d0f02199. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NL1ZN2503583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fb1a62504097045f5ba9bd680ff142e76e203cf5cd33b3b7a903bf1e68fa7c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NL1ZN2201938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d47fb8f4f6e911d761aa6fafa54e0a30d84c2cfee3f67e1683aad854c2c27c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/NL1ZN2201648.