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 0x2919722a990e08d9d4d6c17973224039294c68248ca500c29bb5a6e5eec4d109. 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/c9fb1dc8-00e3-41a4-ac71-b42594f3cdd7.json and https://artists.proofprofile.net/proofs/artist/c9fb1dc8-00e3-41a4-ac71-b42594f3cdd7.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 0x94ca7008e8bf26921328cbe598c3bfbf3a07a484b6b6588e788240c14231662b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/AUEM00500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc176c491f593a50923fae4bec43c0ac152cfbbb55e0f4a75c088f9241c54639f. 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/AUEM00500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1e448cc29937b4067b0448d21c9b1067de045d13c9bd11bbb65e2fac0fe913. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/AUEM00500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a46f4830c968585f13480d25266f6724912aab9fbbcc0f7ed9693f69d879739. 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/AUEM00500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31622e703381c8cdec16e274432e0ac460677e7c704c97cca6c590a5378a11d5. 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/AUEM00500043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55e2295f6c6f2a1cd2586b03cfc31de301aeaf6ad33d561c61106201e5804f8. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/AUEM00800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018bb1d1c8826dc16ac5bd60570a473d05fee62097b0fbb1a384138a8046483a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/AUEM00800110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db442275d44289fe03ff4b31b354b91292bcb04cefd99ff05351572e75ebfda. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/AUEM00800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b658b8df0e1b7a006000d99abda789e715411818f0bba76cc0f42b91c4371f3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/AUEM00800111.
Goodnight, Bull Creek! / Mornin', Richmond! (Live at the Corner Hotel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2454c18abeacfd96c55bd78a0d6b806b22f5d481e0ac25e3078b70dce6350ae9. 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/AUEM01200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9adb460d707e98f5bd034330ea991189e5371c0240f8334b81e67821587c0f. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/AUEM01200078.
Ever Fallen In Love (With Someone You Shouldn’t’ve)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ca7008e8bf26921328cbe598c3bfbf3a07a484b6b6588e788240c14231662b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUEM00500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019643a39323786b3dd40ea9d693aa59f8a8fc2688a72ddd38eb3f8e886789e2. 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/AUUM72000781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x019643a39323786b3dd40ea9d693aa59f8a8fc2688a72ddd38eb3f8e886789e2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUUM72000781.
Before Too Long: triple j's Tribute to Paul Kelly
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e1764fa72a89a7f5b4cb001b1fc93e2c7980646ad3fffeee8c934f197bb3af. Chain 2 (Bitcoin): anchored in block 960349 (2026-07-31T05:23:41Z), 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/AUAB00900834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15454d756b98c9282fffbf23f5125d1f32236448b022c04bc77193514a60b52. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUAB00900833.
You’re Learning (feat. Katy Steele & Bob Evans )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a76aa9e6da146e13892747011b40d6dd8ad08cba7513e76373f0427e326e76f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUKQA1200012.