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 0x814709d42bc6898b8842893c70e2dcd07f0536a81b12981751c24b67fc98f2a9. 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/c137cb81-3901-4aeb-ad6a-3e886441f2a3.json and https://artists.proofprofile.net/proofs/artist/c137cb81-3901-4aeb-ad6a-3e886441f2a3.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 0x2439dec81248218238e385941f4d3f86d2cf0e43e766d9a83ad05f08917a5316. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QMJ761500145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f12b38320b25a4d6a9c6b4d461cfdc3e56d8dab82059214f930134a4744307. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QMJ761500146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81efef2c856b2442461dc4722917daf977464cf032a1a387f4901e94d310b7ea. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/QMJ761500147.
The Opening of the Great Pyramid and the Names of the Divine Mother
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe738a49050564df8665419b4ff8b0ecea476c45547dec0d84ffda9e191c3240b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMJ761300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9e6b64673edf5bea6550e86f432447be00fcdcef49ca58174225de58e272f5. 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/QMJ761300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb090fd7db5a8cfb8d685fc8675c0f5965b7d87effe58092affbe2ff9539980b7. 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/QMJ761300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0773ca73587af34e358234ec79a28095574e84b2ec76e9aac2e1bb3b1cbbe. 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/QMJ761300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d62ad352775bdc7773b1e1cb3ec4105129431c8d8bb23f10d282e4c23a080d8. 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/QMJ761300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67aabe0e138e3c165b79a814a305b67abcd1ca79d72d80509ccb87e36670cf8. 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/QMJ761300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39857b507d582a29075635c07e5ae7caf7efbcdb73b4bbe0d82713f5c5659682. 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/QMJ761300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c31c69fff5abf35afe0f405610bd9bfafe9f75208380d0e7b6c22891db8c8d. 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/QMJ761300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb151be2866ff7d0b071105e91037ce8036949e708a4672bef93cfc1d77f76466. 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/QMJ761300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d4a1485b1773b215b70009f489f6159442dd9c26639796d48b0ce58f939854. 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/QMJ761300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffd64c2ab63866efc6602b03cb6e59703a425a52010d24aa951ec3cdaab44dd. 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/QMJ761300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb7d6c79e544065a72069a0ce4507f1c1593bde21ab2cef2252cc9d9597e13a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMJ762300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a857b2c31996a0bf3e8554d5fdbad9a69c56085b686664ea6c4adf9bfac747. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/QMJ762300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8f6fd3c1d87003dfa5c1a7e0b9c4ddc9fcd484547d050bc476ef5c13089e39. 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/QMJ762300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd1ebdb34cc6d0df7fce2e15efa893dad88f8bd0e607154bfbf5a8005f8851ae. 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/QMJ762300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08b4c876792241242a59e079acdbc2b124afa51b7f15acc3398160884226f17. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/QMJ762300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38fb023ed732c2f892ae2d0286f065ae14755e606b73c9f2a2a02fb62617835. 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/QMJ762300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce71f66e6cc7e0b5c095c3903a3b32633a1e4ba0a11ac5b290c5a23cb663c39. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/QMJ762300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd8fd16dfb2752efabceb9a6e202bd938240e1c17da7514e291c24d277fdaa9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMJ762300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a9bc030d3f34556d7f41c8d7ceac627d8c1ab55f23da02ab0342e953f80283. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMJ762300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b421cb049230fc3f32f7ce722a496fbfd4606ddc5427849859acf259639dd7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QMJ762300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dd5f3fb42b25ae5d33ac30ec804f0501418e5762611d445d3d8065cc644e03. 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/QMJ762300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409edbba22d430931514dc2b2cc552cd8c55df4165f907855e740b1a413e3176. 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/QMJ762300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5951326f9c7dc917d7e62e7798bd720b905d8263626aae1847d7067ef57f94d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QMJ762300014.