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 0x24bf2d35aac2b9e3e9f6f41e3f213490eb1f8247394f1c1e2f74549fe5bfff71. 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/8bc10835-60c6-491a-93cf-9cd95329742a.json and https://artists.proofprofile.net/proofs/artist/8bc10835-60c6-491a-93cf-9cd95329742a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sleepy Tom (Original Animation Soundtrack)
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 0xa441ead0589e16a5167ad4ab0cff9581d22ec9d1484fbc4365d3f68ccc936d0f. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZK6P2173420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6684a5f1303f1506478634416342fe6484870a3545e5a233a5dbc8c685cef91b. 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/QZK6P2173423.
Rotten Apples (Original Animation Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9315314ca08b98e7a441602c3074f0b56b141a41709e38652596867d5dd8bbe1. 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/QZK6L2116797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367c85f3edafab6dccc682a3a7da2d522a73c38cbf2567b188058df4510fa6ff. 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/QZRP42295203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9903218a4d0b6b50b2a334026c59d044d7ff95e6f715c34cbf82b67e57f31ab7. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/QZK6L2235761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34577a5a2ebc97981af3749ce549103e96b700630306a8ce8558f57b7d9a86b8. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:02:23Z), 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/QZRP42295205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9a2dc7dd7b65bc6bebab4cc52aaf67448755f09c456a2e63743cc9388c7e7f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZRP42295206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176773a16f06b3fb37b1215bf68f28439c6535a3e8ec7e6a0b00c62611396eff. 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/QZRP42295207.
Endacopia Demo (Original Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65fd48d341772fc722e5373ba5dfa08c8c8834bf39ba439b4ef60b7c66097f3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAU2235698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d02331182ef744cf47e826bee263fc852b0714a073f79fffb1c0e147a471b7. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:42Z), 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/QZTAU2235699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634a0c2eedaec94272837942d6157851887c1fcb22fd636b096df097cd2d6f3f. 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/QZTAU2235702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8540088b20c22e5acfe491e03a57d296915ce06deaa4f37d992111e67220537c. 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/QZTAU2235710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f763d2699008481d1ba769041a8639a280ad3b7b877330db22b5dcdbfa88450. 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/QZFZ22347261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0970360e37d3f7e918acfc845c0ef5754f3faf33e7eb0780299084b7224866. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHN72350077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb768b1de67f147daf85d0b2b211d129edef168a73c0842540a24a856aac39a2. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZK6Q2348875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eb0bbd82659d57ce2a97e5546934025c70345557ac747c626b7a895dbf723f. 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/QZTAX2442811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab05ed3d2523f40b16518a0253d4459dc73f6657ba3f1cb2b920d97be058203. 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/QZK6G2558301.