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 0xb9f954c2f45a3db8124534117db3fd5c62a988a8d903a318976d280b01b879f6. 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/dac37356-232c-4b81-a865-6d20101c8105.json and https://artists.proofprofile.net/proofs/artist/dac37356-232c-4b81-a865-6d20101c8105.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 0x14cfaaf0abdd6815cb05bd17f4694eed38365a090c1c40e6374ecff3f5bb1a93. 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/DEUE12029451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb68c52cf894e156cc61a4080a20fc0ad6a959027aaf99069b1d13ed9371d04. 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/DEUE12029452.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b464755cffd49b169fca3f72005726334f3a2d41a923b2c0608d7a126d1c91. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEUE12029453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2b76567b26ace52e593a8bb9efb6f53568faa4a8103a9bfbf6ba4f089e22ec. 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/DEUE12029454.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6792f30751155925d1a9039fad2367d45e21d2f45d4f6151a21299e519620b2. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/DEUE12029455.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe058b5f584a934de8fb82e9d00ff647de4e12e3890b69664aeb3ba9f8b9c5100. 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/DEUE12029456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb50fb9f5abf5848ce741f154af4edc59a473c5a9eb8729f702f985a4fdc4ad7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEUE12029457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ff5a19b47de8b5ee6c42fc77bd6b537a311b741b5d2c910f55338aaa23c380. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEUE12029458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308c2abe5f9998b6e884a404be75cd58e2a137459b24a18f1f29670f6c869681. 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/DEUE12029459.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c2fa5184309f14415cf4a78456654c6377df97d191ff1a199cfaa04d25cb33. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/DEUE12029460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1ad50a20dec72cb8ecb059a9f2ee96411d5c69e422f1925c304c8e5dde48df. 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/DEUE12029461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d91fc4b620e3d83ba3fabf095cf1fa95909638318bd9759b928d0fda8ee5546. 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/DEUE12029462.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22096548aba908c322f74b6d25aa54ac43ee9a9eaa9de027bedf91e1fc41dd7. 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/DEUE12029463.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5581a28670ee1f8a7e7863462095e121dc4724ab9024adb6e196832f758d2b02. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:38Z), 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/DEUE12029464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2faf9f7917e9d29275baa4c506b75cd6828ec36afda9209151275787c9eea6c2. 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/DEUE12029465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fad6d51adcebe93d7d61145444ee7ce8d4d552b203b237feca919faa00fff8d. 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/DEUE12029466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497b22ece1253ca6f44d221a04ed7659df4fe0d5dda5fba4f9c3978c94a34dc5. 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/DEUE12029467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cabe30b8a1a19f3403e93788cdec2326ee7243b8c3cdb232d038630aa020962. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DEUE12029468.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0fa6e43b979aefb9af6290c345363fe83d27e1c10f815f1237cf18f759b0ac. 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/DEUE12029469.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5467be8c1b99171867effe75c6e031b8a3565daa37d433ae906258886f2c835. 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/DEUE12029430.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0ff24572b55b21c0d35ba1596134e618d82a3fccb4c262e2fa6e1543c0c142. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEUE12029431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551cf97d37ac36308958987729b30ad02b62a7a35f9e97f70991fd6c68948180. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/DEUE12029432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa607127436589a0d57526b4b80dabc0297614016d043a34c8f76788865833bb. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEUE12029433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abdb550ac00a9540fb98dbb89f42627f3b6b53dbdb8ebf7a5bc426ce988ad52. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DEUE12029434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1657f1ff9ced671b378b6361a25d58966fff698f6aa63ac4523f4d2826ca1b8. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEUE12029435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f624ccc005d274d9128b8ce1c6909fe52d1f51ca2b8fb02ba75a07b607ddf6b. 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/DEUE12029437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb2f58aa9f85616ebf2d27710a6f7a9997b472488faf18a78e8f4126fd75971. 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/DEUE12029439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11b7bbb9a2a549fbe642cce97fbe05a507e9e900caa2fda84d987b895a1f439. 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/DEUE12029440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e5b265741c3a7d04f0f598f528347009e60a042ebc7843cd927c3cfd3445d2. 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/DEUE12029441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487bdd5b02520eb8f9f9234e771be1b1d572a76523e2017ef04f7efe6d7303a1. 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/DEUE12029443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c5b16cd94bd5ea84f0dfdc6dd691de54ff789154f8352e47fd1b83fc1f082f. 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/DEUE12029444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dab0d170c83d706abd55cf515f391403aac0e76aed76f5e97ac5bc3d7387743. 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/DEUE12029445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa9f162756448ba7a41dc2db6ac7f6e92dd1eb73afaf1ac884d7e1ab92df020. 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/DEUE12029446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd8c38cb4fba356b9be1236b421b6e9a9c920f4edd26f978e54c1c23094a633. 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/DEUE12029447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a2e0a0f6a473fdf9801adf9ec38d741847bea6a5bbf0c399435f9355256fd9. 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/DEUE12029448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7238cca96f0c8a2629817ad6d2c0d8dad9544630593885532be72bbfa4b6c392. 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/DEUE12029449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9b49f6f333c851452c44ddda7f59760df4ce18ceb894df76a516281f33569d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:48:25Z), 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/DEUE12029450.