1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x82228d2c4cc412fa8e861366111bb6510a04cc33e258eae9a08e133be3cb3ba9. 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/79e91acc-247b-41f7-952b-f80732b8bf73.json and https://artists.proofprofile.net/proofs/artist/79e91acc-247b-41f7-952b-f80732b8bf73.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 → block OTSBitcoinBlock must exist at that height 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 0x95896e4daeda0ee2a9435037fc34595329379cc59425e6e5251654d1d4c5b85d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTB32394182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d32f5485e62f05d933eafe79cefa338ce61c9f54f0bc09764a347610ec88dd9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTBD2397264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17260cb1b708ce14b433cbd034af9acf188f9908f9a982300aa350314c1d548f. 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/QZTBD2397265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a89f47ce75f225a282549c3adfcfd443ff271ecaccce74a27ec216927bf673. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWV2462320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109134d71e124ab4d6430856238977d041dc70f43c116a689f75adaccf0f060b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWV2462321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381457e870fb4d309c5a5f390b76a9ffa86d5eed49b53df889234613f370d42e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNWV2462322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x233db3e6e06b40756bf4033c20a840cca3628b82b98c5fa2188277420292e787. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6H2444032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869755be1a1da0eda4377481641b51f300a5b87ce6a58e2aaaa36d02fa8ca18b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWV2462323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc93473748d4c3dbcccf7d2c8bd0c021e11bedffddfa26c91a53bee330a7fd51e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNWV2462324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2864b3c2c1c968917e096e655a62d707f9a3569e23cba3494907c76fefe2bdbf. 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/QZTBF2408758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5cd297ef073de887e097fa2022a8dbadc84a9cc517c89facbf4937f526fdb8. 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/QZWFW2452291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e03927e7b44883da033fdf59344f7b10f3e31ce625a25b0907274e501fe0bf3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ42564599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1785533eab31a6bac7080c5b98e1b6e67a887436bd60f8fe13e08239b53cf8e2. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZFZ42564600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca0e3b1516600ac604ae43698d431fb90c16030c57a4ef0a576222c8af85952. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:30:51Z), 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/QZFZ42564601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c8144f5744c70436af8b76a74b0e9982f105b50f69f90211c2ad13e5ad2a73. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ42564602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308d481bc772796591b258e3efee29a5a3ed023ea9f083c0ccf3ba133f9fcb87. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZWFG2541784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875fb6ebbceee3caab295261897c5e6572a37ea8a35c5aad5b1ba4f027cd91ab. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:58:51Z), 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/QZWFW2561901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8516a1d530e6bac2d61c986dcd79ccbeb8142f8fa29a6a7dec478d767c557dd1. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:48:57Z), 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/QZZ7M2591268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875fb6ebbceee3caab295261897c5e6572a37ea8a35c5aad5b1ba4f027cd91ab. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZWFW2561901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb34b4c60190597d959133dc98b022fda5c63a015b98d68c74f5f006d1ede82e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ7M2591269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b5bb7d9a3bb390c735336c4106126fad84bac52a24a5538b645166f7fdff14. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZZ7M2591270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16fed33a764af0e185587bc8a02770ac56285934c7253f7d4dc78538ca87d206. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7M2591272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee53e29cf64054335c584552d380b5e5c71ae70d3ed69d5a76a7e2bb3dbaed0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZTB42585164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d52cdbc56a58ee0bb49631c46243725caf3c137ca76f12853f4846cedf34cc. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7M2591273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9e368d979222026a49f27e02257c5af85ace663fca3c945896afa34b83c0fa. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZZ7M2591274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308d481bc772796591b258e3efee29a5a3ed023ea9f083c0ccf3ba133f9fcb87. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:48Z), 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/QZWFG2541784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dae20428dfce89037911fdc6c8f928d630c7f9161de89cab3cb053d9bd18ad. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:08:39Z), 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/QZZ7M2591275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e6a882d4bbe5757e72d486ebd81d00ed88c6ecd7bfc0c90c0b415ef8210026. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZZ7M2591276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91009cce26794b26c7561a3e03780de555b77a3bbeca4133269d4aff68ea8244. 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/QZZ7M2591277.