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 0xd60527f45e0bd3f579e46e82fa83a4baafee5372d85dc499ef93de1fc061593b. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/82165aa9-60c0-4659-833b-99203d861c6e.json and https://artists.proofprofile.net/proofs/artist/82165aa9-60c0-4659-833b-99203d861c6e.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 0x9abc2b510689d2e1937ef07019364f0e1d01c40da5312cc627d41a90d203e258. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:56:13Z), 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/QZ5FN1891227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f2fffa1ef728bdee74b9222f55a24f6552056c4194450b8f3c5c7abee2483e. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:53:54Z), 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/GBTDG1302042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f2fffa1ef728bdee74b9222f55a24f6552056c4194450b8f3c5c7abee2483e. 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/GBTDG1302042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539d1418552a4c67bf96b9b9018688023c60c867bfa613be1e8c2cc9f2b13b6c. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USLZJ2042003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac27f77e0a804f2df3025bd51d4ce157f67ecda3c3e0d8b133d4ee7fb18c8ad4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBKPL2141732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b8c02ac9ce479762d0511d38158cf2a373b7a8e91c5aa14c4fc7fbbd0e9be6. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBKQU2512181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8f2be04590be96a65393e419ef2899641f50fbceb951fa19a716c9769458f2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBKQU2512183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298884b29f74494cacf175b1a4f78fd311a4445c6cc483e1ec404b370d7c07dd. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/GBKQU2545953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0eff4790970194fa29f9cfd2dec454d8c6b05463169535da64c9578a62df363. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBKQU2545955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e476f9f7ba1a681852e1ae068764138a42c6fa31cf211b788b56c4c1a9acd5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBTDG1301613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c44846d60d13e5f560e3f0c08f47a6c1cc1eb03f189d3371eff8d400c17bbeb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBEWA2206162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7542a4c74dcd32e2362bf34274c44ca34378b67a8aa0b75803764d3000c985f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBTDG1302255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bc6718bc71b8e9f8982297f113c3abaf996fdd2468cf1869101c5bf1b08f2e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/SE4MF2100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c44846d60d13e5f560e3f0c08f47a6c1cc1eb03f189d3371eff8d400c17bbeb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEWA2206162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4596f15b3f2e651096c7cbdd6384462eeef1ab30fa70a4bb6c63ce035196d494. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBEWA2206913.
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
Reflections presents: Earth Day 2024 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd31541fb89219e7f0e1c97e7b7f1ead6cf791fe606ffb8a8ccb5bdf83d98967. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBEWA2401772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f391fdb4e61db27385cfacf43e4f35b3eeff8c8c711d01ab6403f776380573. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBTDG1301867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc122e4982c8821c6fa0c5054eb2c91fb67e17fac2612f7d15628c3aa7fcf125c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBTDG1302618.