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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060db178f98bcd2dcba388043dfc5d972d36e625c6604a23b4da2c9566fab880. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb178aa5-6a5b-4f9a-8ec5-1eb157faef3c.json and https://artists.proofprofile.net/proofs/artist/eb178aa5-6a5b-4f9a-8ec5-1eb157faef3c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b57686bf57d07fd1d2f031e7e9bbf94db56f7e4e55e2dfb65bca8a14957a0e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPVI08815030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ef230865b38165d4ade8a2ea11a2d7da31feca4860adfc1ff985c25e9829ca. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPVI08804740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aac7772729bf98d876eaae1ad3f25500547aa1db62ccbfb6804cd1a321c0e7d. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/JPVI08815010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ac1e0e7dc9f798f35e9a39ff96525f9697068fd9630f0689d43f6d1317dfdb. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/JPVI08915340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b9750df34b4de3a3f266b6298d2b5d3e9d65454a8ee65ebd8cf5cbd7fc32e4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/JPVI08916470.
BEATNIK ROCKER～THE STREET BEATS BEST SELECTION～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580ba4ac7a4e332b22ef8be60398f0ba935efc22bea8f2d009e40c51b91eab3f. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/JPVI09328100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357ea6e361afaf820eb5a4ccebb88104764a9071e0188b94730ab55ab4fe879b. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/JPVI09328210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a2f443f26b0c0c59ed43d40a91b0e08b8f65b0bb32885ee5bbbd3125c237b6. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/JPVI09631990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ac7aeb57a5dcbfe0e989d2959a5b8c48402b5716e45400125c0c97c14c20f6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPVI09218780.
20th ANNIVERSARY BEST 1984-2004 ★REBEL SONGS★
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37117ee4067b21356399ca902bcc0a4f1bdca77af485c09ca9fb569e0fd1d13. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/JPVI09538070.
20th ANNIVERSARY BEST 1984-2004 REBEL SONGS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d9959b606478e76a5011b0a879f4b3e4fe35d5b8b568723fb9ec4b4e0d5d28. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/JPVI00502670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ee280bbc032f67edce6ebdd9bf26c95c4db8efb6df34db66b63a3b060c746c. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/JPVI09328130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad957c8929d0249599a6c732609383347a08fc4c41c9ffd0984a4c519a7456a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPJ901302910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65744380062f4f537aa508536d29ec7f08cd9102cae27ac6f8b672268e34f4f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPJ902500780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65744380062f4f537aa508536d29ec7f08cd9102cae27ac6f8b672268e34f4f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/JPJ902500780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8476de20149505f32aca91a1f127347e43fc1bbff5ad9166ed4192395bb33c2a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPJ902500790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe217415f9c4d39ebdc28004e66352eff2af535f3826fdf887bd15dec6dc5f342. 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/JPJ902500800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94edac8c817cd1a679265bf0b66e54b0dcef9c7cbe29d115b3d474fe487bf625. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/JPJ902500810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49351263f9290f7b7c7b860cff49db809e1ea8cec694b40eab3f12a42c0c9bab. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/JPJ902500820.