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 0x385586a8f4178e37c5ef3042393d4ac4a9a89b35e201444e45fbbadd5aa5ea13. 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/5d3488fc-ef16-46c0-a624-688af43a64c6.json and https://artists.proofprofile.net/proofs/artist/5d3488fc-ef16-46c0-a624-688af43a64c6.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 0xb897ac03b786c4635ccfdff17324db7a4effaff5210c71ca9eb5e5c06d957dde. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/US83Z2040316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845a81b47d7ed4c6ae8e8f6301f97046593cf22a7ade6b971d7f8f9820695faf. 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/ES98I2000440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f9ca1e2e47f22cce0569499953ff92377bb7e87a305f2decfd04b473ce27f40. 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/GBQ2F1122972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2a491b33e81b01f0ac9a35e5a59827660ae1de5216dbc0010e1c64711cf7c8. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBQ2F1122973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3853b006d3dccba5e555c13d0818dc004649ae04603ad5adfb080aeb5970dedf. 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/US83Z2476885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfd1f802ed7711e68d9fade1b63c793e4ffa2f0dcad2c60537f7acc8a89c9fa. 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/US83Z2475277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19670e481a81e37e75bfd79a77ae32b158ed5f13e5bc6c7b9d20ad64a0304742. 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/US83Z2306500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10906d7f009e73e55ef6ac8740519ae00cdb9ad64125320186d42eecf308523. 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/US83Z2306502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb493f4a679ef589a36fe992fc80c1cbe73796b6d10d6dacadf615eac614006b3. 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/US83Z2231768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638b8cc7eb2f047c95a00926e56c3583bd77bfa7c49da369c50813e2c368e1df. 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/UKU932230961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8297cef1e453205b6bc69b783a7d11476e1f20d2a6bfacb555b6d5ceb3c16c17. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US83Z2209335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108c4dbf7fb0a7b101b7929d377abf0d44af0105973798173361b767c39f2b3c. 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/UKU932245524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde1afff8da3587e2fe0b7a5571c98904b09638d99b74391dac4b544fb0ee632. 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/UKU932245525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde15df7ef586315ed2204da244e25652b9e2a347ec193d67f3233aa7a6f7d7b2. 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/DEDH72200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131208a762c82983ce24853523924f257fff3f31cc299d6774145274c76d879a. 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/UKR6V2182472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c29cf0b63fdb472e151c134d86d640226842ad2d23234d1914bbb5c785ce538. 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/US83Z2136786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34b61e23e0a79c54e8ea859429b26174304bb696b4e916e492e9d4860f7eb15. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/US83Z2119938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9904451f49611f20406af82e6230373654bd747e9580ba1d094e9bacbf7d4d. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/US83Z2119829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b90ffcdeb9a651b123166437cf1df4ed1001c4dff99ec7e467cd0d4350c62a1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/FR59R2102760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc9aa14acd4c5129974b5d1dec3728374b0d0785725f6b4c3269e9edc7227c9. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/US83Z2112639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3948017220b84576f9c581014ca8b575072fdb775f91464bf525ba2106e355. 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/UKR6V2075460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63bbe4ef1cbb225bfb8d78403beeb1653eab88b69d83366ba61775f8f98671c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USS1Z2001005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40a8968278e1a852af6a76fa92e2694a73f58e8f2ecc19be9f0f23ba793c357. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USS1Z1900905.
Arcadia - Stan Kolev & Matan Caspi Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89597342878f3998243ddfce8192a04b9ee8afb1b8188eda29f19653f64f09c3. 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/USS1Z1900906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8d5fc7d6630c50c7cfc2276858ee8ab7218597cfd9bb5cd0f9dd5cee9cfb92. 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/DEY471819379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cff313b357611ef69485077124cf5d2abd0f21380d7c678f4384565c263a81. 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/DEY471819382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28726cf4159ef9695266622cdf7d5892138f33641655b0900b611581323ab970. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/UKACT1940613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d1a150979c5a710a2b9b603f623685b7f151b55d4e1dbb2a5b8dc6ed375b9a. 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/GBKQU1895494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad6d89ea1795ae868eaeea6435856fb21978f98a94e9a014dabbef7dfc76118. 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/GBKQU1895496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb79ba8f122c9b45d45f5c34e2ada6137673cdef4ffbbcfadadddfe3d616e5f5. 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/DEW871809327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7742c923f5c116c1ec3af0ff2f4b77be6d0382efeac7fd43ceeeba7a62d4f6ce. Chain 2 (Bitcoin): anchored in block 960306 (2026-07-30T20:23:53Z), 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/DEW871809328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f5b6f6846e12c925892f74dc08d9f595fbebaf98a21d3c563c3c67677eb5ac. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBKQU1878389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacb7600c4d86834b2cc4beefa136427d12bde4e0318f66f504bfb2ee8617ebe. 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/US83Z1923834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a471bb943fc80c8320d37895966150675f347d220639af41864385233b2958. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US83Z1923854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31048be55b446fb5e65ba3b696b813f037d61d6c8c2f611d68c9aa2044eff965. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/BEY921901400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58400721977d7beab02b21eb3afa3a01b8f3c31277ee3ea645f885f978949f44. 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/GBEH42010071.