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 0x26f8a50655bbb2b89f88c0b71c3145d1eadf39dcef40f3186bcc4e1b7314fdc6. 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/80e13fc1-4dbe-44d5-a585-b3b12e2b03fd.json and https://artists.proofprofile.net/proofs/artist/80e13fc1-4dbe-44d5-a585-b3b12e2b03fd.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 0x6a2c1d4816b9867b773a537fd817e382f7c91d7c350f052cef81050bc86bcfd3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA1D1715271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbef3b64b691d467192170bd90ecb4557f723eb134d06a8c16f95b382165f3d. 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/RUA1D1715265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672c807b8909a93cb3a8174f50bc620674f7e319baa7d0b83203ee80a05ef6bd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RUA1D1715274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c9cdafe41567cc09758c564f1ec45c08f87316988b650ccbe357ca72a7b208. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/RUA1D1715267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb05be500d6e0d2b73e38a6e9a28d2d8f2987027b64350716ff30f87380d9579. 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/RUA1D1715270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c1d4816b9867b773a537fd817e382f7c91d7c350f052cef81050bc86bcfd3. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUA1D1715271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e045fae7cdfa40473995cd2e7df34ef1b4611d1af4236ec06ec2df403b5fbf0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/RUA1D1717476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052e7ccc02cbaff9fb8e55d8837e1dd1cccee30be4f0861b83a2b90ee637d96a. 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/QMDA62149446.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5777a2bb496d81539bd45e4c469b044589bfa89995d9fcff1ad10df7ad2ee1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX762549778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b7356a608878ee0621ac8d18d4fb9ce8d6eae53ec82a6fc3c67262dc2c214a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:35:37Z), 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/FRX872558119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49f035ba6494d5f9c75d6b25f4419695db0721a55762722961d0a889a4d6d41. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX872558120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c851ff821b296b6127ee20cca4b7361ebbeeb07a4ce533a1a37214420d00787. 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/FRX872558121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8593543684979eb9714678790de717d614021c9a6cddce5816da64b7850cdc20. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX872558123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866343343561cd10bdff1aab426848fe114f66ea8b10d609a9758a6c488c4361. 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/FRX872558125.