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 0xb2221a5846f2c98485358d6d94bb4103a0b1271b23f6ff4cc3d5ae4e8411983b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7049329f-4d29-4a4e-9dab-775622df036b.json and https://artists.proofprofile.net/proofs/artist/7049329f-4d29-4a4e-9dab-775622df036b.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 0xe9a1db5ae360d8235d2edd63fb8e3b5fde12f854d2cf28de94dc1739faac55b6. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBPFW0800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdada3263d5ac98e99b91d17b2e789028f4d8a0eef18fb6bc0c5e862d82332d43. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBPFW0800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2b36dbdc1daaa36cb519fef004b9ffa145c61e1d310a1696272347859195eb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBPFW0800048.
Stabat mater: III. Vidit Jesum In Tormentis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1c69bd6ebaf9623b52d712d94251daf6910e656a009141f8a4859a251fc3d3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBPFW0800049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8c1259421fc5765f9283db2ad38685e6b61cb1b03464583324fc9c0a00257a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBPFW0800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a1db5ae360d8235d2edd63fb8e3b5fde12f854d2cf28de94dc1739faac55b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBPFW0800051.
Stabat mater: VI. Now My Life Is Only Weeping
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf071044d73d647ac63021a8cacfe737cfa6224b5c778d9b3311e0afc9627cace. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBPFW0800052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cfe8e61fc75f6d4295249ede4d59a31782360b77721bf42f9501ee650d10a5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBPFW0800054.
Stabat mater: IX. Are You Lost Out In Darkness?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f744f00e8314e0327444242fd5ac2d4fc3c6b61f767dcf8fc61947d452ea1c3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBPFW0800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f71d1cd806c388db08109609acb9030f1318422869ec02636c775c96cb6f9fc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBPFW0800056.
Stabat mater: XI. Fac, Ut Portem Christi Mortem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9ac0dcf57daa28eb9274d5546fe2802bb85e3be8cb5dfee8167530d445c75f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBPFW0800057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd58e46649e515e82e392f978e50619a51c9b555d8aa6b104f2a0b8b5e07239. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBPFW0800058.
The Very Best Of Karl Jenkins (80th Birthday Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8c1259421fc5765f9283db2ad38685e6b61cb1b03464583324fc9c0a00257a. 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/GBPFW0800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f71d1cd806c388db08109609acb9030f1318422869ec02636c775c96cb6f9fc. 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/GBPFW0800056.
Symphony No. 2, Op. 52 "Lobgesang": V. Andante "Ich harrete des Herrn"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f468392415dc5b3dcfd2c2feb3ce66682e38d15f843c0f050f6be6353b7ebc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBDGQ1730309.