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 0xad192121c12e05fc3034fe390aa22ccdaaca71b33f5ea62791d5d23aff84b76b. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34cd9722-c532-4d4e-9d6f-a975af6189c2.json and https://artists.proofprofile.net/proofs/artist/34cd9722-c532-4d4e-9d6f-a975af6189c2.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 0x54cad932334400454dcf688b63502ef1200938b866d937a2c2f65f5ddb4f2c78. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZTBC2529241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d7744a71a829c9a2c940b03c72bcf4d23783eacd03b478ea679f8c3d42095a. 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/QZTBC2529242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80fc788d6d09079f3d5c01e8e509e28b1a8bc9dc9abe51acf518e48858b5db6e. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:24:13Z), 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/QZTBC2529243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6bae86a4d91476a4c47eaf5096256037fbcf8e177cec0142c2798f96ea7e16c. 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/QZTBC2529244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ba9c425fb1c16d65365b222694b7b5d63f4b489a8feee8dea6943d1d9f93b8. 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/QZTBC2529245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7766e1d5a0440e22d41530bc6a465288afbe58e21c0f0fc2c43342bbd5e45d03. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZTBC2529246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc32efaa3dd6a8ebb9eaae9281d32366e619c877e2a52df5c7f79a46c0c190b. 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/QZTBC2529247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5fd8fc2e9130c9aaeeb184984c3cb344c1d34dc7b006fa7082921d38953f51. 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/QZTBC2529248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb694804a26b1dcb1a162ce336956754d97bfe1cb86c6016fea9d2f100ffbc9a. 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/QZTBC2529249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec1f3791a7a934755eaa88b24f4b18895463395833a0c55dee9ff3628581576. 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/QZTBC2529250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81952ace46b7d57881a4a1d05de305727ca83c6bca9d2e7d27f66d83dc966c66. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBC2529251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3799baf01360b81787213b2a56d88f9b397adc10b67035b4d74d99d625975340. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:30:08Z), 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/QZTBC2529252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64e0e06621b5ae04f17be1baac6bc244ed21609c7455de769e952f2d72bc617. 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/QZTBC2529253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da31770669b3a94709697520dd7d105ec0710f2d43f240b8518732ce2a17310. 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/QZTBC2529254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7d0266e2a64aac359569614467594675c17cc432f63e737baa2de1a61439cf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:30:16Z), 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/QZTBC2529255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd7317d75f81da7a38105542ea421bf409cd92f1cfbb2fd75961bbd9c116e6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZTBC2529256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc198ede557a85be983fc4e3161b07b5f2db854d24aa87d79ff832b3e087093. 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/QZTBC2529257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171403b08779ad65f7b32d2bbe8e84497c7e02af0be4ca6558f1d38620ead260. 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/QZTBC2529258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36056ad5d99ac41041f97c8106acf805b2050af90657fdb4a9eca5510b30dde. 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/QZTBC2529259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4fc2fc7e8757056a2e3e604d42fb3c818c8a16d917b1193162ff458f589ce6. 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/QZTBC2529260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9232438675b97b8c72df284241dadde31b37df97cecbc67677999f92ee63d3b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT6EF2524477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d866fa5358b7570b700f1e028759411a737fecd215a0f7c47e875c29aef64d. 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/QT6EF2524478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe638df58491dd5441f42f92776ddde419ac14f7dbe062f447caa50f315dc2a95. 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/QT6EF2524479.