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 0x1e7573f662d9c8bf36aa1b6a2989f1f24f64de6319bf00875a6e8826c5fc137a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0ff49c6f-07a6-4c0e-b430-dfed87c6eb3a.json and https://artists.proofprofile.net/proofs/artist/0ff49c6f-07a6-4c0e-b430-dfed87c6eb3a.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 0x9648ae9e85fabfe1d2fe55bef429bb84bd54207efdd3bd82d9e25534d0fa88d2. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/GBPS85904438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ad41e14f77a8fbb50972c0032a39499c700bfd3f85fc5df49ff5257c1f5a42. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:49:23Z), 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/GBPS85904448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82784147e881cea51a5a1289a87cc346ac576c8c6052c119658166b821dfd454. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBPS84192344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42cf5ba4cf87bd56e9f479e51e0fc6a4bf8d2fbd22f8dd93eaeb8c69fb6cc5b3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBPS84192378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f7354e48d8913d01187c4733b005f33eafebc71b9c822cc7b3a97d10a1a9469. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBPS84192325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0373b80b4ab440a428839f08a3f15f239ac462557ead10e47f864e5738a561. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBPS84192239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e4149d853db9243e5b8047cb55ebe3ae204bb22103e87ddce844e66324120f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPS84192700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674c3e25d928adf17551e5d160b5fb94a9e0d4788cdabc2f7ff88635d5353d4f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBPS84192247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4bf695de54afe4cd8749ddbfab1888638c0336845f527a19aef15e58251209. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBPS84192673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30320b4c1cf7f957fabc2e710c9c711dd0a8f758f5f1ed5cd03d7a6530e13366. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/GBPS84192531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d704bb148845bc8201ef9394ef3838a94942e3b6af3af30f4893f2724a11ed. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBPS84192536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574c760c8863e527db46d93132303b6346b1ef6d4db1885ca836d3df934dbac0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBPS84192550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c2d7f67e4739fa3076677bccab230b25d152f59cd18554218b4611d12702e9. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBPS84789799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a42f800a89518dccdd30fed8e1ad6c8a158cf1c1d9d266760b6c5d81f705ee4. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:01Z), 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/GBPS84789790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fc01a1651e48f85454959a6a926378fdcd67de2d2a0afacc1da8c6443a1668. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBPS84789789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7344887aea4cb249d02c0f2001864748ffecf746e5defb0b6fd19b51dd3b505f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GBPS84789783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f12f37b3c490022b8338b534e993dd087e4c4341a7b0273282273a6f12891. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBPS84789780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4144cc04c19d86eee2286ca1d852cb8d2dd8efebf1587adfb62ca20ef04266a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:23:47Z), 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/GBPS84605480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c2ba8e41a21eb1c9da43373e7c9f9115a6b5d6ec1c71f7f6ecdcd74829328b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPS84382174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efb13cda793aca09531c71621f194e2f408741632ec92bd1b88f47811ea739f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBPS84382251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d98fb285bcc6eb1a1b6fe4cd3e86b13319fa9dbee7ca91aa5219f4b985d2016. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBPS84382248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5557967d651a91dc207ba0e502a0077903f172f80f49b19e7b7166ae5bc428e9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBPS84382159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe323df3d4aa1573b9176843b96eaa751ace159fa63bc4bb04794d96b26fbde34. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:27:24Z), 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/GBPS84382191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505ac7704e5ef8ba71c7e540fa457f9c52989a167598ab7d0a9661268e9d7189. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPS84192660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b838b7f71ee8c247b3ef3ec996e11ee50ae9bf172ff2162bf2b82cca82bab04. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBPS84192272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1508058880262d4bc2ba3bd37dd9193c106203c3c430c6121cecf86ade7056d4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/GBPS84192312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c58a3d2771f066e99e63953179ede19119436e14edcb761e14a1f0d2ca0c0b2. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:33Z), 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/GBPS85578768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9a411ce208f1721c7190a7763474badc481a70d896a01bd94f4a6ba2f1fc256. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBPS85578766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be5c5eef3f59361d8c51c2ffa401d45b5e8b032607987bfe85e47526acad237. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPS85578785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95bbe44044e33d2b70e3179fa687ef11b9a5c261ec81e0a7a7ff15f246d2fd1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBPS85578681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdd6bc810c7a857629cc524d8ff9f73987fd08c20982163bfa077e2640b1db7. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBPS85578696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec51beac15f78bd258455e42e427041754e12f6476ffbcae269ff2def020b279. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBPS84445061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8102ccc67068276b82e887ba65bbf657d295832480a7e63274e1788af70f1e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBPS85992794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbe0d076a9f4963a946d56c59c6ff091dc519f06c9119c2974c08c90d304123. 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/GBPS85992767.