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 0x256f2cddbc8d0f2d01466e2ca0e354b8ebb4944aed8b8d2f9316374933a5b804. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5b01995-c126-4870-a4fe-08bd64c4fb73.json and https://artists.proofprofile.net/proofs/artist/c5b01995-c126-4870-a4fe-08bd64c4fb73.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 0x8639642f28400dad165a97aaa59f2591807f0a3454b86392e92c8d51b4f39352. 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/QZ9JZ1740152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f7f2523b912d4951cf8734b88e5bb2e023554d81287a1a47cb7b075c60a54c. 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/QZ9JZ1740153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9f083993e1ec0e4795375002d9c5c9b792a156d465f036b3d3211970e0a54f. 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/QZ9JZ1740154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23e837a9865ec28cd3aa47e05d63c85ec3baac9b3a5b5ca78ca1ad284b95c8d. 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/QZ9JZ1740155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1b7a618a6f33020128f66995254d0a563c580e9800ab05e429ca12848cd863. 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/QZ9JZ1740156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e454a3d215f23a4764903988ed0ba37e644a47f506d20a88467d2663b697fc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ9JZ1740157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8075cc041a77557a07770b8b65cf2981c40a66dff6cb18993b4258476416726. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ9JZ1740158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701a208ab9eaaff2c00327d189ecea91c77413718e28a48e9b384f1861862ee2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZ9JZ1740159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620a8f0dda88c89020a3ea3ae71b36b943943b536f192193f066a7d2a8323ea9. 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/QZ9JZ1740160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05cc3566e1d08756fbb16fdae303ee03c84f6f855a03820c615a5e1b7641a4b4. 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/QZ9JZ1740161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ddac8d484e4e9ebbc5003f05f8d02bd217e74da5d286c4d73383805b2fd7b4. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZ9JZ1740162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaed5e539515003d4a8208e4750e510e101f2b130d63b14b19fa11130de5236d. 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/QZ9JZ1740163.
Fly Like Me (Wings) [feat. MarkUsFree & ZackVillere]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55f98bc3a0470a4be229bb2eefe0ce9dd0c03c3be1a3d95067b13906ca78432. 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/QZ9JZ1740164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024d1148d76a018dca1a9dd96fada535471f33b93edfe008dd4dccb9ac684f75. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZ9JZ1740165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae69a00b59d48d0d1eeab116a209ab5cb4a62cb484d961c2b67b941e4c8faa3e. 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/QZ9JZ1740166.
Welcome Home Son (feat. Tyler, The Creator & Casey Veggies)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfed43433db6cfd2c2836a3514e59359351ca8eb5e067fd0896be33ca6b3225f2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQX91101353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8673238306f651c63256a1a85328db34190373b0efb2d7430ca0e4a53352f6b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USQX91101358.