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 0x9e3d16ecf8bce712307d6f8761f3d240100ad0150d0866fafc7e00f94faf4a10. Chain 2 (Bitcoin): anchored in block 953768 (2026-06-15T09:30:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c128432c-ef85-41fe-bdab-f043e2507310.json and https://artists.proofprofile.net/proofs/artist/c128432c-ef85-41fe-bdab-f043e2507310.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 0x9676e97707f5cf19d719c288372de44e3086da0be55caa363224b4bfd98b6515. 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/QZWFM2318086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c0e9e9698447ec191f4cc04e73121d36f3119cb12355d0797270441db804dd. 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/QZWFM2318087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ee88903bfafa4dbd2be100a9af37c13c371d00a45baa6ed44189358e0cb5d5. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZWFM2318089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ecf7003358d8974d1151937bc8145ce090a340cfc590aec425dd45baaa07b9. 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/QZWFM2318090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814acdfdc84d041ea409f1b8713a69da5c23de25b3468e2829d2643d876c33a6. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:49:39Z), 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/QZFYY2421772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59194f4271dfc4b29c60961fffb453ca6cc2f41e490236c95998c73ebcfc5095. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:27:49Z), 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/QZFYY2421775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe633b6e393af34dc965a5c43416cb3dea33bc36c4537556f73cc24e7465ec0bc. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:44:57Z), 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/QZFYY2421777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff72766d538095a58583e766815ea7f15f6d203ceba9fc823ff3006f8274c2e6. 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/QZFYY2421779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a581b964d16983cf5b629ed7603785cb4eb69d973a703a59ab3a94e4005a7b. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZTBE2482277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb11c08bc29a9036d2b5aaf2a3657490064c347b9c3e35fd04d5c117f63d30e0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTBE2482278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e18da59cede084785c4b7dd1b85e7c925d07ea6ff9407b6d0143f00849abd91. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T03:51:27Z), 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/QZTBE2482279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031f11d93f4b63ce4bb2dc83174d13e970f3dd0d41bea81ade85f2fa7ae7ffae. 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/QZTBE2482281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10223358cf90ae249a9f3e8c776d5c85f91b689d30fe30a89b2f96ab456e5313. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/QZTBE2482282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e77a2a5cd5e0f7bbef88845c9858af0a8383403b54ccbc726d072a97c3d7a0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTBE2482283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed422b8016325e9a05325573756c8ca9ff09043bae08e6b508b454c3b0cc5fe. 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/QZTBE2482284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e45b3e0694fb4e4e55147d006c4e74565488ef273639490136433820c90e312. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZTBE2482285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66551d8aae212a5367021ef6734d87154c02794df7042f54aa5bd6cc65224075. 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/QZK6K2556128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d7e4edbdc26dfd42b1d2e21e8b9d596ab7977a1f9b95d19a1a975372cc851e. 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/QZK6K2556129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddebe5b9c81f0c37f86b2839093e3ef465e82fd056d5d290ca8cdab39c7c08b5. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZK6K2556130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93026c05d299f0652dff86304aceede5e88c42ef27e377021be9a0e022f1cdca. 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/QZK6K2556131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34aaf6f4bf26a0314c2fc51f53b50401c9ecc4c74556e725ab9a07832b32d64. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:20:29Z), 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/QZK6K2556132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91abd6b7098ce9398e7b5b91fffd618ae3c83ee5efbf8049de1bb001df33c94f. 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/QZK6K2556134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e3430a9c94f4100f4d26874bdb5c1d78d93d3192934b2e45c71e9600388750. 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/QZK6K2556135.