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 0x677a9c5d622e454a5f43696eac77b998c522e0313e3fb91e2ed639ee40dfc4de. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d4c7eb6-edc0-4526-8150-5face7b30e11.json and https://artists.proofprofile.net/proofs/artist/1d4c7eb6-edc0-4526-8150-5face7b30e11.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 0xc20049a94ffefca932525603ed8ab7b733df8d4abf948d8414aabd1e4818f633. 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/HKG732014956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03d5ab3a39c3f001e2fabe8c7b85278a528b982cd488dff54e7a89d25e4440f. 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/HKG732022448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8cb9e4fc7c48fffa07549b86aeb1b7de54e7a8c60372c6243971d2d39abfa2. 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/DGA052058286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5680f62a0916c0d056733c6302ab5a9e639f9832064d9144194d568773a06787. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DGA052058287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c53ee050dc633f354469a4c17550df8d851d668c4b0ca4824e9a8106a5543d4. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/HKG732136906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81be186f7065a7d0616db2999da005eaca9d6b61c496fcfd09f76ad04132a85b. 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/HKG731681078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1e7163b7b3dcea35274aebf914ceeb272b50bf83c6c15831d0702957fab3c8. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:25Z), 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/HKG732289074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d492115ef6f371827fc47a2c785f42199e017db740b3630a6d24ab26fee4dc. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA0H2491808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975b47a5db2901ba56068a6779396f82d29d361b80380bb4dc036862855d9f71. 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/DGA0H2491809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2159ebbcd80fc617ac06cd2081bb888dca607568046316b2e1965d36fc4c2c6b. 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/DGA0H2491810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f0dad1120fa8d6617ae866dac023d1613f5282a7d40fe1b96a79106cf9adbe. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:16Z), 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/DGA0H2497134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5387bab285dba49b38ca2efc0d46b7c54edea23e85c640a76adeb2eee76489c. 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/DGA0H2497135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe662445e34c6363f9e8485557190279d22a0da9c9c6408023d9dc8c6676bc4c4. 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/DGA0H2493754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4296521716422594bfeec51fd8cc990e631d667d4d5719b468c26cab627d9b6d. 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/DGA0H2493755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd9317de272ba33b161bdd77241f2c5cab2904578bfad4393dd253bea1fec20. 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/DGA0H2493756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c2b791e79a544b0f971b185ace81774c6b9735271f1a2d1e0591105d7b39c9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DGA0H2485598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba2afadc7d423b52d74f33f21fe48a909acae28fe684cc64dc8d8088d31d006. 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/DGA0H2485599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc744322cb7f5cadc74b8ab97f0760f58d39637b621caa7e59b14e1c108e227bc. 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/DGA0H2485703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1ee057fcda7d86a39873deb8b0f1d2651b4a8215731aa21be7932a21d7e647. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA0H2485704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249d1e509f749be84a48420747c61e335bfbbecba9d82e13e73b5ec4ed10205c. 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/DGA0H2496918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f45a0ced7c902cec1449b4c2048b4380f80eccd2df979ad915a673d6ddd204. 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/DGA0H2496919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371f44b47c8cdf022ae368d644a1d6463a065f64666b6a825fa8684dc9e7fe3d. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DGA0H2491677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a4251f9b9f98c9793f73b817019a28002045b178afa37c3c1caf398cf5c0bd. 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/DGA0H2491678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e7bf4a34e282c5e72f4c4ba11f3385a760f9cccdda9cd40af64addd3308994. 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/DGA0H2496647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95b5affc76db6501880f0362f43b7c329cc30468246e17d844074d645c68894. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DGA0H2496648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97b4eebab63eab29334ffa8a9f53496159460b98727dcb312d679e2fc40512f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DGA0H2496649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc962a2b986cadb15f1ffe97bbb83565113ae6fa1eeb05745ed703d7864eb4dab. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DGA0H2496650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6c757a6a4719254f881a8829e4b2365f1df86b3b584db2c7997c249ba4ca73. 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/DGA0H2496797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3746f9b4a01ef5622c5e0f7858f17dced2fd5c30860e2e302fa44e352cb48f0. 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/DGA0H2496798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6630be79f3e60970980eb799035780fbe7d3ef220ed6b8dd0bdbc9c12bc8515. 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/HKK972239456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607be577ad67357901052bfb8eb5f771e46ac4331bbcf1102cafb74b6bad6d13. 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/FRX762378839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcecf9e8f4b1c1ad1a11cb2532d73c1ff7c9d4a684f771b4e60191ed26917fdc8. 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/DGA052307262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6034f9a574ff849bcdb5f24affb77564d8045f82ae831ce93f547b124c427fc1. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/DGA072314305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1df6a429b0bdd59cd4a14f20bc73b55dfe5b501c54e134b747a8f2da9da404. 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/DGA092323478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bbc26e58bfd9db00df101f1a341fa8a8ba321029ba3245334e6ea5524c90c7. 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/FRX452425428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5329c564fe321970bf0c65f58af571be3a539d2008f6212ba064c8e90059a4a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HKG732014204.