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 0x78bde9bb84d1167739e1a037681cc67f3f98d3ea85471d0d044fe769b1ebe0e5. 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/60c6216d-517b-4b7f-a21b-d639a66e27a2.json and https://artists.proofprofile.net/proofs/artist/60c6216d-517b-4b7f-a21b-d639a66e27a2.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 0x93c3f0a762a130babdf2bc55e7abe5ba8cedf6735fe600b641694554385afe25. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/SE5Q51806147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe802b07e7d464c06edeafd53c908dc8a78b70ae37d885f1fb33d4e083e749425. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/SE5Q51828316.
Turn This World Around - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e368e3ad2a0b73081829cd499f931cec6f50a187e1f1beb47ad5062c618b17d. 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/SE5Q51810258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c291e1920f9ef4ca6b2e99b6fcda8297e1879b7dd842cec57441c1d0b9aa707. 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/SE5Q52001233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b7bc0bac6e23a2d81d80ed32ffb7ee461b6c04ebba06a14d24a9e7222b0bc2. 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/SE5Q52001503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5135a7cc8f5bd5accc5b7797d1d9ac3e5f46027531d47bdc2148adb99d0ccc. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:32:29Z), 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/SE5Q52001526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ecfd9d589cdea22fb1b3063795f6bb61cab6490730eb47fe13a266478976d0. 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/SE5Q52002071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55713ca050f3b828b366b4af1c5268f5be09004a1839001582ceea93147cba89. 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/SE5Q52002652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8bf68ce4a8d25ffbfa9572d61f95de24d2d908fca22284f9dd8393e57e6d72. 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/QZN882568809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e697b5924d08278c97e3372245517695038313274f64ac6d1fac855bf3a089e. 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/QZN882568808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95012e8a112538b3d894d75b057e9748e8a507e388df89afb326e4d439f9f6d8. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZN882568807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71c8fc82c312dfa52e848dca9b6128eabc4e7861158d0ce4c9a6594f3ac8dc1. 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/QZN882568804.