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 0xd232049bb23043fc55a8ef58d584a7df62c167131c5014e7bf85d2ff421780df. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e868e900-8a63-45a7-80b3-13bee50aac93.json and https://artists.proofprofile.net/proofs/artist/e868e900-8a63-45a7-80b3-13bee50aac93.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 0xd2d588c4e8914cbe8a31e5adc1c880507ed17eb18e6078250d378344f09610f8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:42:09Z), 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/QZ22B2033063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7b91f54e8bd81e1b00b4a0bce508188803a4f82694f5a9ad4d33fdebbd7360. 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/QZGWW2034518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec366c7707e1d3fc2e2635160340050364813f7014f55112636a826f46fc4f5. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZGWW2034534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea93d7ce372bf1720767789ebe6e000b98c2aaa7fe5c78a53f32419ebb5838. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZGWW2034505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6118853f6e6f79c36ce71928f75fb344f5a5312ea7254c49ed9dde13d468651c. 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/MALIZ1029384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b4c70d8a2633800090bc38751d3f8eb1db455a0310c1155b4a35a908a0e967. 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/QZGWX2171453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833e877b042e3e018603970ba7ce4bcec30ed3fb59fec50a89b3e01417ab02db. 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/ESA012403925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f2b2c9558a7f261138c05c5922f91bbf03ed5739c5733b76e49d870b27bc60. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE5XG2450211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a72429f72f8da66e1b6e79d23fab2ae7bd962d3642d1a24748539a8ad734556. 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/SE5XG2450212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e6b1be0db52466c440ecc174c66f9cc42c6f903a52962d338bc09b0fe560c8. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QZZ7T2421715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19746c1507ff2631a00a39ab323a5bb6bd8cabbdd9e1820c1113240502b090a3. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T12:04:17Z), 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/QZZ7T2412723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8873b34e9de7aca0810d1b261bb6fe1bd870c24ff3d7d0be4848f4ea1e7195. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZZ7T2429083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0168440357ff08e6bcfbdd8b3f12b84934ee6f0a5b272da5c30f78dd5532f3. 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/QZFZ22509096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaca2a1cc2c5ea99568164361a498bd7054a252f97e149e85d482ae0af6ac357. 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/QZFZ22509099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9893fe1f31b2036ee4cd35122ae63d1e8294a05038cc6492863900a8be700757. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFZ22507675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c5c38fdf2b67afa93a97ee2af6f30542fe549fdd0c397c7f33cf5c936d9bdf. 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/QZFZ72567722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafafabbadab9ba2d73e2bc223b5cd1ed0ba61c7da047462b62c9200a7785f4a4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA52528907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54fd6174e2feb254d0c76c956f0388cc837e6cd92759b472f49c6920f42a4a2e. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/QZES72588908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf9ba994bbac2159a3657c004d04f49b2ae87f01d021b2f29efff51ea20077f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZES92564392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcf2d917f181acbcea1aa912444018f9d22bef12461d65a48e97189ca38947c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:03:42Z), 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/QZES92564396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ed94fa0439103d0bf60ea5e43ae09343260fbd42cdb05bd6e067801f52d43a. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:21:55Z), 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/QZHN32552142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3334f40db127a3418d727a5ad3a57ffc113486a646038e8ad862349dc7cc2d5. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:20:13Z), 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/QZHN42580309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4dfdd04b59d7b1708d5d01d556c52735a570113689c1b11fd924e3de6330f8. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZHN92598874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12cf2a0932b26a68bae5ba4c9aa61e5b1625a410df8814a81f474d0062e1fea9. 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/QT6ET2550245.