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 0x864034a352d7af162816227287e785e2eb693be11478e7faeda3f168212f7198. 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/98f531cb-e97d-4db5-b4a3-02f029eda52a.json and https://artists.proofprofile.net/proofs/artist/98f531cb-e97d-4db5-b4a3-02f029eda52a.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 0xacd5ce9a518c018b0f3636e15dbcf105f6a411c5cef5c1e7f3bfd6e1b374ebb6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZHN82440502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede1b2f4f19492c3efd856c6ccba9a8308bbd7c401d578a18c4e7019337c5450. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZHN82440503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33313b7a5a134ae866d79fa769482ab87a23735de1e59b2e28cb811904f7e9c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QZHN82440504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6443d80b431cb66737588807ab50c59f9f95515314b315b8fe0670c0916538. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/QZHN82440505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea746487b5f54348beadb674ea162fc0cbf2bb416c3b27c4530b6876fb1075ea. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZHN82440506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a03b2aaa0ca400ee2c8583f50ab7092b8053725497428fbd5e1beac5603510. 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/QZWFV2437194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0960279cb86013c0b6ae1a84746de3c4126c73f41e4cfd12a042e437d0ea9d64. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZHN92535697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4caa1853014f566af68a096f40ab4286b37307b80c1e9f1ba86c35fa452f607. Chain 2 (Bitcoin): anchored in block 957558 (2026-07-11T11:36:38Z), 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/QZHN72596793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35100bc50557c10a9b2c1dbb564caf46818b4e1232dc4e10fde9b26412b9625. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZHN92535702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329a321ab7ae1fed3ad8a358aa8e3df284006917f09a2cc71f37deedb36295be. 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/QZHN92535703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a39ec9ff1415ef0f89531da19677179437d79050c93e371554fa1adfd768d12. 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/QZHN92535704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2141907dce96b6cd3b80418e035bb290a9e1344ab2fe1de8b0cdc466b23252ef. 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/QZHN92535705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05905f66c4c06143a81d940c8b831943014c11c12dcabb3d152587f65f325c33. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHN92535707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49672c717cde72abbea3d58fdd206e06f4849bfa738fa22dcf5c42e5db534db0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZHN92535708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe33c39b8c4e7d80ef8c3f768dd9dd3447ec2a31b5f55b3fbfb13c626ebee9c. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZHN92535709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bc887b7f9149de7d04518c988d6e7a54a5bc4621bdaba41cd02b142d546a80. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZHN92535712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b844a3cf40283403afcb4ddc435913a058a199e5deca3d87d6618be68161235. 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/QZHN92535714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf02b6cb69d42b54bd8dc72b9df466935a1a4df28c3ba6d95a27e824d4fd6d. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN92535715.
WHEN I WAS A CHILD, I DREAMT ABOUT BEING A DJ (NOW I MISS MY DOG)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a06454082d271b524f90aa0c522de7db23b41651100a5570dea29cb00e673c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZMEP2569890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7833f1ba28e1d06e0a24786601b8a97ca5d696089d66d7040937c904bfe5e681. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZTAT2481083.