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 0x4cd4f44716868c20d2af4085e251d5b28484a0ad9be5bb364eb5f042d996e158. 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/1303b8d2-e343-4ee3-b64f-f9570fb21cff.json and https://artists.proofprofile.net/proofs/artist/1303b8d2-e343-4ee3-b64f-f9570fb21cff.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 0xcb376587f3418104a757626be7b3a0b328788bece57726eb57ab6f1720302243. 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/SE56I2000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e2e5a605bee9a0a42dc9cc95c5a679916907018819644eeade78d5ebd10b9c. 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/SE56I2000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d89199acfce7d664937c6be745cb83d81e074cb7907808742e207aa42ad4c0. 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/SE56I2000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c972f08c2038695411a6ee30292631e23c5beb12f1c1c09d56b5237bdaa2743. 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/SE56I2000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1608c066b053cbdc4d94fc2329f037c797d5136974b4e1533586b1791589199a. 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/SE56I2000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb10eccd0114f85315c17f054d641ddca8c507762130537febae302bde63795d. 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/SE56I2000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1daa8749e78681a364903ca85f3e206991169d344ef3814c18d67a92c58473a9. 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/SE56I2000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578f0b22402ffa6e6f0f1f96adb7fb36ba96d482373ca0aa1269b84d43b3a336. 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/SE56I2000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ac931c3a840f3e54d24be80ea13555d0e071f32801f7c2f8a66a3b465433d0. 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/SE56I2000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b39808b08be4de82112a4d5d67b9b1bdf8d193f4a5abfac6cadc598f29a921. 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/SEPQA2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84df290dc1750b62147900405ffaf4d3ce156bb282b492b7f46440476d908d6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQA2300223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682ea47d76eb2701951950d316d596089fa9b66a42af8280a0f4083067a47cd1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQA2300224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126a3f53e3870b853f8c8b4eb5298577cf031d1f9e718c332c4d64d8e1e5fc2e. 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/SE6XY2364137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74a314c76b8b6e8625dcc4cc550822e800a2f36baf24bc15f0224c29a98bc67. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6SA2361619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115875d99bf868cb95e3009d2b300589bd6cb93a37b3d6696be754d4ec4746e7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6QE2333992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578f0b22402ffa6e6f0f1f96adb7fb36ba96d482373ca0aa1269b84d43b3a336. 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/SE56I2000133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35adf039d2cf7f1239fea51719a3a9085b56f362511437bd954407e4512f6053. 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/SE56I2000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d75cc6f4993fa52dd7dd52f69d46924d160166c287d89cc4277ea749e24f3. 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/SE6XY2121032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690220c2a49c33fb6fd294ddb52747f364efb752629469a45634a81584fcc64a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQA2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeac97a035fb308a814691227d2b470c89ab8529f4334574c48b1671b3337f180. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQA2400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f25dbbef1ca02f45c35c8dfdd5877ed675a01493e4fd9e651eb6d5cf98d19b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEPQA2400023.