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 0x87f3a050eeb2d93b0a3b98c8714623aa3f26fb76644106cc4469426723823be2. 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/b29973f0-0d14-404d-879a-a1a4bae324da.json and https://artists.proofprofile.net/proofs/artist/b29973f0-0d14-404d-879a-a1a4bae324da.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 0x4b17d4d507966f208dec6fa79d628a5c83952acc3cd732a979fbd5fe5757fb8a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX762332758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e0ada817e7ee5f4e71e2a9025c1868466b0e655b79388f22ddd9dbd12ba246. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ8B2372127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9956fc1efe0377588530d95430ea276ad0f24ea76a4a33ca964c17355c184ff6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USLZJ2417452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e55abe0d81f8f93243f238857d69f41553ddc97619d6a32d66429d04a2e4474. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USLZJ2417453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25b4d4da59000db8c0d7e271a0dda3c65b4b16fa4b1fedd5b45ed5e42f66878d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USLZJ2417457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca73a35eaba0fd5c9a4795a115c0bd881e4db52f454bed9604ccaf3889ad7ed. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USLZJ2417459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7b8bbc2428a525fc8fa33f56a3b470f40b4c943444dbd1223d7168418c0b84. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBRKQ2449404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd4c4995a650d800e979a87673c438b9c76e3c2a5784d2ce3869dd3c14263b3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBRKQ2449406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac56e66e93d87dd7fee962f8d1369ceaad663931b8a104888507ecad34fc05b8. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:43:16Z), 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/GBRKQ2449407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da9a2f7852bed15477023dda5e55972e59c2f13f0fd90e886446b1dd927207b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:06:28Z), 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/GBWUL2489846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ffb7f28fb4b7022d00e9e590ba5f4f9c4ff384a72a78878aa7fec586c4933f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZTV32435790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dea44a19002969336542ed46b8ee24f94a9d157eb74bf418fb958c82887ecb8. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTV32435791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ef9ee2617cadd7f0a1e4d98f39d2d72cd385bda95dbc7c6d6a51054f5ebd8. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:58:46Z), 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/QZWDD2467088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2323c1a36d3dd59b8f63aa20458fa32a1996738e1532558021daf314a98d55be. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWDD2467085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe0f6c98840a392ef86e107cbaab28c4b8783ceaa0f665fec31c91115c740e3. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZWDD2467091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12955428795e6655a95036c23ff3760eddcf04e46cddf04b7f0e079d2f77e57e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWDE2495916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1660c4ae0d12d267c7adf74b81c9560c695829877dde7dde40ce581560a5978. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:24Z), 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/QZWDE2495917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2bd1e533ab3f9de67d487d68b41dd032b18db184e26af9e661cb79841adaa1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZWV32464805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64878bd0967d24b0b42f9eaa7d2e3ca1398ad857e43f73a38bc71dee0183681. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZWV32464806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89639bc5f03106bbde1ccfd0300b66924483cf70d57b52bc7d3457fc235a9fcd. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZWV32464807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26053001d64f3b68491e5884707dcb4065216bc40fe101b577fdd8e5625a58b2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWV32464808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f00b53c4854ed9f7877a11b7b4c9fc6fe189a061cb17ae1952d60d27db267b4. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZWV32464809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e4f718a591503c231a98a7a5683a68b357cd0c8952d8bd8107c5a01f91afc1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:17Z), 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/QZZ8A2411647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61764fd332e166702f1dc8ca87c98e5968bfaa284296a53fe9bcf39e80db975. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZ8A2411648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efbaae3cee8df9554d0647829a510d0d0e7c85629d031b0084b74dd87f0bd11. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/QZZ8A2493296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaabc39cda7a9fe8b15098427e21366759d3b99b6851f4d8c78696df7f4fddb5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZZ8A2493299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad4b3d305edb610bd0fff4b0cc4e122806b17bbbda072a85a2b5945972a5ca65. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:59:48Z), 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/GB8KE2502526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6664ac06cb3fbafed03fb1f1a4c69e1364e3e81b7ea10c630ce75dbd832555b. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GB8KE2507894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f674c7a1f0afb6c59c2d7031d1c941f098b2a4a5799708b957bfb7f9f1b57c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GB8KE2512726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5def6c9908975c86162b6afea5bae328f2656cd68f9a81c45cceb3d5c830086. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:29Z), 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/GB8KE2512727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9d093fdd32af210670e8ea15eb8cb55e5c42c4d511159f98aeffc09c6df1ec. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GB8KE2512728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556b4b46469518165b51933cb3490c69fbf22d2c1c249447b754b534adbe0754. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB8KE2514533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1011053bd3454efb7833291af36e5cf6b7506d5e1a71e91f240a4139e2a9aa29. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GB8KE2520112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf850d3b58f399c6809d1ed1bd68d24d65eec2b7f47cced35057437fb73bc74b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GB8KE2520114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb4585a806487f75acd8ab7b089bebae70f1aa51cbb823d449b6e06ed8cee48. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GB8KE2520115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d6391b7de6e0227540a7d491121ddbdc6a882d6c5c844e455274342bf14310. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GB8KE2520116.