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 0x8094f3568365560a508f1b8204082d2759ab04a76e2fcd5d8d30a270b1f18574. 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/c611f2ea-cb10-4473-9b32-e14e9c8a67eb.json and https://artists.proofprofile.net/proofs/artist/c611f2ea-cb10-4473-9b32-e14e9c8a67eb.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 0xba9ab7fc829af49cef801e6bcbb5554f3b404368558ed1fa950c3cc13a27bac3. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USRZR1346801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cc99539ee02f8ad9b0fc6639c6b134e0e9c35e0949dff4d52e129ebe42ffe6. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USRZR1346805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a61d5df471de3fa2a70e6e26577dc848b1a3846f630103bc2fb53b4cada753f. 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/USRZR1346809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0d2ddef5fdecde9ce6621839437ed91469a5a939112a165e42019212e8f639. 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/USRZR1346810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae28ff5fd1f67fe10db8b035d86488669b024fd6567abfce4e2c79f92b2b916f. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USRZR1346811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6013f29b660ed9ff148d74f1ad6155a285f3e1db2db1ed53b2ee4f776d4cc10b. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USRZR1346813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a1b58e55cd40a712d98ca77c95f43d597961048aed5d98d4af9215a892859. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USRZR1461501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6c9947e1705bc60fbeab2f8bef681adfe8fd63f7617a49a94fd9fc22cc324. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USRZR1461502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a2303b9e65d07e89cb340d98ecfd5c575a880738c0a463bb563c7402c6ed3b. 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/USRZR1461503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe276aed4ca8a9115c2afcfb8a8ab29dcb110f706de1cd5b3202158134f64a6fb. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:42:03Z), 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/USRZR1461505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f6f3b50223d559b12f6813d1940df0ca35edba2ee23f64ec5c7fe73347024b. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/USRZR1461506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2525ab6486da850c1ddca613ac2e7005717c534509d56d4e670edbd4046e5b29. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USRZR1461507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012bf6d730532788fb06b04af0c103b2cd71d0e0e0048b66982bae9a01606a0b. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T00:59:28Z), 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/USRZR1461508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f63c65eac4bc2bc358dd8fe4741cf4e4c040d02ab79b3f1de2ab21c0f8b14. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USRZR1461509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf56fd4d80f6ff79c6a5d1123fefceca50778b3ad86d587a97882f0ea3737f0c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:51Z), 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/USRZR1461511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58f8fd36a00436e2de95b72cd28edabe0fea95bb46b9e413fb2e956968c3328. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USRZR1461513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dcb6c89f2e2403ac15ca977ab08c0fa12232210fb42fe953215b9ff68cd66b. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:37:24Z), 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/US5261722617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfef734f3f6c01f4d024020df4bfb2d14ee6a48a5acba62fbb34b2d695b72e18. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/US5261722618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861d7bcf440a6ee5f18ce8e9668b78c2cfcf0f670bb3e3df7f47110c48d7b369. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:45:49Z), 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/US5261722619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b77bcd6c8b72f4d28a90a417c556c2981c2377e612696885507b17d3224a91. 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/US5261722620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8843435dfae84fa8377145994d2dfb4450e8cf91d194cf3fd7e2335850706136. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US5261722621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8f85fb1266c7bfc6cb7edd3fb5219a5d1aca0cae1c2b51c5426fee3a4ca827. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/US5261722622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f6bbe9d7b0c7d28f6583ac65bcb06f9878bb72b8f863c4a94e411cc4d6c04f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/US5261722623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d66a110480796554af70b36c09fdd173933e205f9bfacd2ea43baac01f874e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:45:34Z), 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/US5261722624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3150dc26582f3505761ef867192efdc2ce3c731b7d988cfd00eabb107c9bc9c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:17:52Z), 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/US5261722625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ff6d78c07711720ac11b0348d0c0dc1b7c9494a4cd132e1fa485967b7f036. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/US5261722626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee20e9ad78710d6bfda793262c563f1201422b9af96ff91d8cbf865e674e750. 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/US5261822844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79283bb6836138d32f6cad3f3ab41aeaff6c218b67830fcfb7a05e81d6a5c8fb. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/US5261822845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c121f8fe851f331c853f78f85e847358ba03151ec1f0504d77086486661f78d. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/US5261822846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d65892fd8b8c9dfd2097d55ec2835295e7ae672e6efc546fea83f94bead54f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:14:55Z), 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/US5261822847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938e5ace725d76da0d946d310c487437a6924faaa98ad9344acbd5cc716987f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:09Z), 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/US5261822848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647d1d3dfae176b63be580f3e5a2aca53f259af19a69933599457f0621c9b121. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:01:43Z), 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/US5261822849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8f88a254b09e3a30a6ec96cedb3b7c378cbbf292c720399657fcf980a6adbf. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAEL1921171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e5623210a2237a3a2940008b3eb789239a4f1d509c42e32045f0eba66f99a3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAEL1921345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0fa4e0b2676d388a596a7c9199317ca411012236ef1be62094a82ab50507b1. 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/US5261722616.