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 0xde8df15c0bac294a7f1a336aa231e0b38a96fe9425ca42b054d1703e28ab4a53. 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/3bdded52-eff3-4b45-bc6f-ed359a78ebe4.json and https://artists.proofprofile.net/proofs/artist/3bdded52-eff3-4b45-bc6f-ed359a78ebe4.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 0xa2662505bfbf8cc95a20375328510b721b7e38bb8c95edecd7ad09803ab485ac. 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/US7VG1804089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b3ca7bd73971191ea2e3abff7b5c8c8ab51765fc079a9eab2ee29fcacf5fbf. 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/US7VG1804090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff5b0486e24948a0d26e9496705b3874a67069f0a490247e49f2fcf3c4c318d. 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/US7VG1804091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699523fc275c33e636ead56d470346237f2e9b6a1542d1109563cb7abefbd2c8. 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/US7VG1804092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306c314e7c56152d5b2fcee4a854e52180902e16e46c1b63963199d6d66e31ee. 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/US7VG1804093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a2630c95437a2557041636c38fb5973d921b79f13d4e111ad02f09dbbac6ec. 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/US7VG1804094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7317cf425eeb237fe64f99253b38022db934fea4a35753315366e59e5be16c4e. 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/US7VG1804095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb165cf41120f4d61832040a0a5b6dbdd310ec1b222179fd1866b1166b57bdd. 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/QZNJV2028403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6d2efae34dd7937c656cf29e49729b344ee07f89d62f53b88ab0599e8e0b0e. 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/US7VG1667706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41853d7adfe7fd33d3b206aaaca4b34b82726f7366c7d853c230b424bba448f. 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/US7VG1667707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe441ac8588d0717f0ac497a2854d5b4170d3ab04f2b57b91e073e31cf53d137. 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/US7VG1667708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e161eeebc04268a7e6eeb890b961566b31594bb2716086626e10370488c21d3. 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/US7VG1667709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6088bcf7544c353cf240dfb52b62e7c8ebbc0ef420cb689de2a93d3f093692. 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/US7VG1667710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0823923a4b5dd51d207be4d7d983cf2c54ba0dbfe5fbedbba6458a8bae50c2. 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/US7VG1667711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a15841db6f039a128d6b57e99fb67373caac9babc20334759ddefa8bd04363. 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/US7VG1667712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x527fcb5b5fa1e411f0084d90c7ddcbbe67ab8e00167d7de29e8eae5d72855ff2. 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/US7VG1667713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7930df311ab8470ce887c6b4a81adc0f84c668c263eae51e8bde0b4fe30fe1d7. 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/US7VG1667714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cb996955352b0c407b57719aee1c91e4663218f344eb8aa7aef6bd45d0a4a5. 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/US7VG1667715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7b7290f88dbd949760d9dbb7d1f7b725cabe71eb2d094196ccd90decc97ed1. 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/US7VG1667716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a6560c5ee21110d1f622073081412752426a8dc8a777f8faaddd358125d06f. 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/US7VG1667717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62ae5e232f2cc4585da33ae1d0d3fe30644cb42d669d20998d291bc65e02224. 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/US7VG1667718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7295e7764936869a15b7b5119d5fe7c7bb69d3cec52cf47ba467039e38a2d0ac. 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/US7VG1667719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bcb9f3779e5f0bb277bd7f6a06ab9a3031a048d82c85889f508ab5d738fb83. 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/QM4TW1674853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39bcc157e8e8baa6426c8adc4b58528e6aa9133e9c605b520eed046bd78d15d. 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/QM4TW1674854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b2f8449f5598951d92f5413df727cba5a658171f193b0cdb3450a29bdfc56c. 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/QM4TW1674855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9f96d06ccea750bf7b35099a5eecfe7a71479966888e3dd5a71939054e9299. 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/QM4TW1674856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c1ee86ca21cb407ad294003da627a579d7b5a11ab459e8eeeb74e3149c539c. 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/QM4TW1674857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d155943c81e40104a92eb562a8faec8138ebb9f61ac727c2334a27fda8383d. 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/QM4TW1674858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19256a1f739f4545bf24a80eab0a776a90ffa354c02bb18918af82f2e7086e. 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/QM4TW1674859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b755e2c1a2c0a8dd2ee09d4bf1301b474b1a0a506bab4d8c716f504f58be241. 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/QM4TW1674860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc892d125f09f5a6c547bee2e9be0f607680ee3a19c6cf682bc48b886735ab760. 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/QM4TW1674861.