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 0x3494ef4ffa2d0dc388bb64d0dc57a78227fe8be51dfb9fdcec748cc8ad10ef29. 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/5005c43a-0ad8-4a3b-90f0-ae56d980761f.json and https://artists.proofprofile.net/proofs/artist/5005c43a-0ad8-4a3b-90f0-ae56d980761f.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 0xeb0c6e74ac1c9b1a45ab783c758a92d36708c8fb73933a668971b8b33c2cd445. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPF351200610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea70ba7e7aefba6ada28513ab7615816beca892b7f8714acc2f6716b881c492. 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/JPF350600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fa7a40a37c03ce81d04336402aec772b403c2943fef6c322bebc0b7651c1b0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPJ591211266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d27fb9c6185a6477a2ee65b5643d17203fab4fa6dfe32cea32e895e2046dee. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPJ591211267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2e558611484c6604363d9031240ef42fc0a3db36b190f08a862c4ac92df925. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPJ591211268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c0a92bc39d8db3c83fc6636f146d1a0f3cb1c2b6470b9367ea191ab6c48e67. 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/JPJ591211269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52ac75e607024af9967713bba96b25c15db64b757a8eba6e0584aaabcd30b0c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/JPF350900302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8dda0ad2301f92cc00d3fed26aafcdb4a4e06bafa9e94313abc0ed2e6f6d62. 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/JPF350900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d743c5f71ef48e5072978fea4f7eaedd64a1d806f99a14c541b4ba8def1c3ed. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPF350900306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44737b8d4f5dcc95ade110111d7d37b6269260f5659940d48510fdc44333d82. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPF350900307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368326d2eabdb080c9e71cd27f1338b837680d0c44c1899b99c98133fe847517. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPF350900308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09b42e755d598c0a64e7c35c68e2b7ec2fd690b529342602099cedd1ecb3503. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPF350900309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6b3cd16cf7101aa737de8af2a3a42a8c4869a5ce65a903ee166e82811b19d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPF351000413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56552a54479b284ab82de7e1bbce94e8ffcd07634f856577d4ca0e2582c8bbe1. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:53:10Z), 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/JPF351000414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5fcc85349595ef5226c4dd9334a8c14d01105f319aaa32e6d19ef3161603c0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JPF351000416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb140efea3f8fb6d6101bc56c663a27cd13d7c71fb9134d3cab8cec2334689e2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:30:13Z), 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/JPF351000417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3af51160f51ce781f0a5c1b3987c9737f1f134cbef2d42a7e35c5d3a837a6e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPF351100511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbef5ab6824020bf2f176286f2c5f8d64d5fda3217f30d9a28a77d86e7eccef9. 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/JPF351100512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442d8e740a0c6f0d33503a496a0d87b92960967dcfe4aea5b1e3c1f11d5b1625. 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/JPF351100513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9446695b400d5807d91a9ee9322b459d259e53e02341bddf1a3fd048fff851e. 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/JPF351100514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ce1cd807b5405424149205e63925a7b8914ff4b10ed705d17df4a176a2e4e1. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/JPF351100515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8e1b945bb0bcda358043ebd4aa642f230dbf3f72eae05a85f506e6de2abf8c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:16:47Z), 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/JPF351300683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a1b3cbf7e13833bc2b378bf764d1f4e758b776b44e83d27302c333f6e6e136. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPF351300684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2e5910a9604211be68b142922b1dc927b3023f00be8cef535a08668dda4fc4. 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/JPF351300685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19be683edfe87f78665c7feffd759bc0f4c19035eb7da8d948ce48fdbd95eb8a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/JPF351300686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4103438106747d6d7a422b3192c37bd1f477bc2214e96041711dd6546bc1f76f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPF351300687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36a60d3385bee26a1b9e75a9df8cc7a2e59ee45833a6f3cd1633730b8a65302. 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/JPF351300688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5560fc9697487902ebe5f83acbdc2e0459bc8b4c39cfa104e766c273311296ee. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/JPF351300689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fff3e99b8a1806f64e053733df146b91785ce83271d818e9bee1265ec88627. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:03Z), 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/JPF351300690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea6523a2f9deea86ac24979fd7ff7037ba3da75f38130109e165254d9492f2b. 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/JPF351300691.