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 0x9162f6babc3a526a7039f9548c81df9bd29f33a4c284acb11b7321534a293d1c. 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/339f6f85-bb8d-4e15-826f-af16b6ae7cbb.json and https://artists.proofprofile.net/proofs/artist/339f6f85-bb8d-4e15-826f-af16b6ae7cbb.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 0x35f2a6d18e3b7b3e323c7d8374734e388131b0d51f6e2b5c1a58cfc55b5783d2. 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/QZGXC2000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab26856dce76dd906103dd2c777a0c1f117ab84738d991349a63b592ab3d065e. 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/QZGXC2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655fb000b9dcf0dbeeeaaac9d84eb3e861a1c65b63783fc6454eed99c2b34ac9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZGXC2200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cda8e7ad4dbab856fd4a6a3d98be1db4d163482a73ce1256c536d5a1d4becdb. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US25L2200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b97b1273f98f91c994bb80a9455af7957a152afb028da6e8f4361fcb748e71a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US25L2200413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab26856dce76dd906103dd2c777a0c1f117ab84738d991349a63b592ab3d065e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZGXC2100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3824cf8f4a365d5795f1fd32cd845da156523c0eccb706d48ad30e6097a6670b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGXC2000239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5427188f17084420c9eca86b3b099ae1e220a654a696aa8ac4f30ccb4f9416b9. 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/US25L2200414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddf7364ec66a4dac6d1bd7763377b0a6cc40305ce0b67000eb7cca89d534c5b3. 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/US25L2200415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655fb000b9dcf0dbeeeaaac9d84eb3e861a1c65b63783fc6454eed99c2b34ac9. 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/QZGXC2200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f2a6d18e3b7b3e323c7d8374734e388131b0d51f6e2b5c1a58cfc55b5783d2. 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/QZGXC2000286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b97b1273f98f91c994bb80a9455af7957a152afb028da6e8f4361fcb748e71a. 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/US25L2200413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0fb6974e9ff5d17a74da4c9f2123b233a9787198b98fd90fe8e6ffc349c4a7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/US25L2300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e426e2d6e7418e748dae0d3214b656715a90f6a7c9196aa02c8dbba0d3d2b02. 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/QZPJG2000052.
Christian Rap and R&B (That's Actually Good)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e53087c53e5be6070b93853da0acc10ae948531c9562212246f5acfc85dcb2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZVR22200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccb0153a941f0172bf67b5d6297bf510d8f2b72907888a5a55bcf44bd9fb174. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZXT2352250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e53087c53e5be6070b93853da0acc10ae948531c9562212246f5acfc85dcb2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZVR22200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc501affb2bd7edb3020619ad893fe1c6f7e9902df1e94907e14fa2b01ab2d8c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMGAC2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f15856660888cae7689375fc3679bd23fddb2c6a5a7e80b486f0e574381a8d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZJ4R2300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b2e219cf063b926b42e7171b234cb164dee1c0ad28d078532f7ccfa702cf8a. 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/QZJ4R2300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49d5cb6ed3626ceabb5a5b216d06eeb52c8aadabf2ec87563c9b2d9b5216dee. 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/QZJ4R2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bda5b517c4cd00040acb9a719d41814740e1a343114f6d71b4a551a99d7641. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US25L2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b42053e45a9480b35cec22dfd0bde7ac3fe09889641ab6e5c0c647f502274c. 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/QMFME2196644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f710e0ab987d81abec65f0b4c38ccd0405636f49519f46123f212af41b4c4d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USWFE2291022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff3f0692e6fcdd83c3688f89d705b57d2bd94ddbc1e1bed88ce941e9e92d16c. 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/USUM72311220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e426e2d6e7418e748dae0d3214b656715a90f6a7c9196aa02c8dbba0d3d2b02. 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/QZPJG2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020aae9f28cd7d81f0fb2d9dc97640169a945f160afed206c60db7171d6e9b57. 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/USPJT2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce652f19235e276d96fcf3dc35e36420091726dd038bdaa0643ad4191ca5c38. 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/USUM72317714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb2b621da4a68dcfcfdb61e7aa5bddd79f5e68eab0c9ea4905bf45bb0cf2546. 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/US25L2000299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91b56fb6fac69a12ecda3b5412cdaf3a759e2f456e31e1fbdbb8ef4c71b116d. 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/US25L2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dff9b408befcd54ea635caf71feca9f22c7ceef687b8877b1ba758fc199ab8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USPJT2200001.