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 0xf3bf3a7b16c05ad377fa3c68e41b8adf859f9af84cc665f174eb4e29bfc1b281. 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/1bfbdc01-0de4-4d4e-b7d2-9c9b5f131970.json and https://artists.proofprofile.net/proofs/artist/1bfbdc01-0de4-4d4e-b7d2-9c9b5f131970.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 0x868a24479ffc5c181a6de222de32b7fa61c5305e8329ab04b51cf88752213da7. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNWQ2013048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1283de9d88b7184b5b1323b354759d8ee79eb3abada9c37a3ffdd026ea2300c9. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:34:29Z), 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/QZDA62194155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95166420ca3acd5bcad20462a92680addaf1424bbf07b589c93f74a84c873c02. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA62194156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb31db809e05c791a1cd3d137883c5581762c8e0e774214ad00d1ffb6aa70ef. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN92115023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663e57a1159490904dc1b23d2b4889b6cfe195033539dc90a0a80f9bcbc42b51. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZK6M2123063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891ae3297b6665bb2d60b154f15d915aef38a5331e40eebd5864cf3aebfef7be. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFZ32230506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e8c824a36866a3aea35d15819441533bc8a2694882e8eeed6d68f82f37521b. 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/QZES92289679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cdf785503f63f8473170648c4a8022520d87b16b325eb8b4756969325f51747. 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/QZES92289680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5439486e46b8dfc4b03580c74e9fb20086b28e1995932dc1d256c41f4454be95. 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/QZES92289686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460658c56da29083ab1013859a1028e30c3a996a862ac82430a773b457718a1a. 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/QZES92289689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891ae3297b6665bb2d60b154f15d915aef38a5331e40eebd5864cf3aebfef7be. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ32230506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97096b658f6643a4bccca36a8fbb94a83b7cdd34f53d47f93731639e50da3724. 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/QZES92289692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9589ec634c0cf8d362eeb246ac7c71aac1896c9c1bc90810584a6b999a33a271. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZNWS2232687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4dd8ccb34443179ea91bce8e70ea1ea4d17450e10c940f3f9be1c1d3a7da27. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:26:40Z), 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/QZRP42200736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713f50e121b96312cef9d34933b793ea302d517c34ba13fc7280ab5a7766c91a. 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/QZHN42346655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c48e898db2cd531c534031b562c94ef20fa85aeb4a3f27dabce0b86b8315c40. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QZK6M2398777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2876738fc9357400cfb061c37f65df71491109c45031bc5042c7d4d3e64bf13a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6M2398779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea48c0ecc2d1c6ef4669c82e061b8a2bdd3c63eeb1491560aee251dce54d2c. 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/QZK6M2398780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514ccd885c8daac1cdda170d770f5b0aeaeffad0241ef7ca0382e935d945b26a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6M2398781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713509d1c5d93b53e391782e3769785e6c86849a5ff949ed9143b0cf4b9fc1f7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6M2398782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298cbd1c7d53f2511d36bfc0d47ee44511b5b5e1498294cc68cdd5f8758fd4d9. 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/QZNWY2311611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a77cc89ecaa1cc630c1d1e982a631be5a22e504e644f793dfe28c9cf5bcbe3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZRP52356971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd498831db5e2a0d78954809c9a5f409bd9c7957bc2a16e9082345297ff03bcb. 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/QZFYY2482956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfe89a1ef82bffd243f9c41dbe3264770736d8b78348715be88467bd18acd5f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMEP2421635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfe89a1ef82bffd243f9c41dbe3264770736d8b78348715be88467bd18acd5f. 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/QZMEP2421635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256c02663112f59c1515e3b8d2ff5c70d67834e092a5709550af434ea87fd332. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZNWR2491722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085f38441aa6035f25d5ecda7d75b602e1daa162ea59cfddfc02a9df4940a650. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBE2313510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010dc4ab57d5c0a0c02cf29a1fb48b56e748a3136d8b26ce533f33f029f59136. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWR2491723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4305fa4fda861d94f632274a3fbf41a714eed7270d727720f8385a8a18248e9b. 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/QZNWR2491726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10caf007bfda163363d4964d42ee6e2b4a9923e231f0015f176c07d3997f9249. 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/QZNWR2491727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd498831db5e2a0d78954809c9a5f409bd9c7957bc2a16e9082345297ff03bcb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZFYY2482956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018a70743f8776f7e181998530be1ff783c1bea5fc9bb73a206c31325d909bd3. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/QZTAZ2495001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a140b801551b443f37db2891d6b024ac2065b700489d03546bd08de1904e033. 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/QZNWW2090506.