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 0x653bd9baa86a24de10e56e2c9cd40e7af2e3fe06c1e3ea6a0a70a46204eda85a. 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/3740633f-67f5-4f5d-b9ea-ac8eedace177.json and https://artists.proofprofile.net/proofs/artist/3740633f-67f5-4f5d-b9ea-ac8eedace177.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 0xd1497f0d3ac818989659ee4b5b8350cf1c46dbe5ad750f4cdbd9423e80c1e02c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBB2254105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce97d8b71e3f40b364effcc546d4c9352ece6ae56937b484d8fc2b8a0e40bb5. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTBB2254108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46083a229d246cd2524335d65d1ff957850543de97fd97c1a19d0428f6ee5d16. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZTBB2254112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c5df70c901dfc9c0184bac508a771428abdd23868a653554c0041d483ecab5. 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/QZTBB2254164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ad38417b1605e09e9631801d4df34ba739f2bb91dae6c3ee606b0cc0224740. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZTBB2254167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa693aadb03a20594541489a1a49cac0b9484d9ef4d084a1647862e73f2b1221a. 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/QZTBB2254168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79156cf46e4aa57c9dce4c6ca27a4d0fee87a6a38971006aab38c337740ff0a4. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBB2254169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fc25f93ed10c86ae26a480459daff32e9565e7beb9e11b805927a859d149eb. 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/QZTBB2247389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631f0132a440528c00e85ce691236b54a16dd2ee226c9ca2fd27bb55e8dcb513. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTBB2247391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa472437bb097243f3207c3ccecfbeb947732e9ecab648c5ef387d413317f85ee. 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/QZTBB2247392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ba398e2d49112d33a1431a88c3ccbedb481f44616e4b158897daf69530bb02. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBB2247393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358ec0b8618d05c52f8f4a8747cf764109bcee5633a42eb65c797367d22ec4ab. 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/QZTBB2252206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66cc37f046ffd442cdd327f772daf9b1c56d72dbd65a8b020e873a7a679def2. 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/QZTBB2252207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb76d2738e3e17b1171a801b17fa258384c3299e9cb7637014fe426c08da805. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBB2252210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe239388c8e19b292da132246416e7a88c330ad394773e552ca6a8685fb95f229. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:25:55Z), 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/QZTBB2252211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e2a55d6fd84b36cb407643580b85d860bed7e24e1cb4c798e9dcd2d783a996. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZTBB2252214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2c191d0605b148aada02976ced49ffce98c014bda4432f0c9e96c6bef5ea1d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTBB2264290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66172905265ea9a9015fc2c5df4d60da963666d0cb82943853543a3889ea0e2e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTBB2264294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82dc245feb151b4cefc711dd3b8954275535ee97f8134ed3e854392f756bcab2. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTBC2306504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ffb9d01825fcf34c07df12fa7c67bf7abc2d82ac855b46ad053848e1496b30. 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/QZTBC2306505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640b7263125c3ae3f676f63a7f50eaa40ed7358ae3472d24440ab859c9cbd9fa. 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/QZTBC2306506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3086337e56384b4cdffcec9c7638b3ebe7b20d82f0c75ef51cd8c0f5b557e25d. 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/QZTBC2306507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bb9036487ab16721228498177f2e7dddfa7ac82ceda184bd14b1bc685bbc4f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:47:36Z), 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/QZTBC2306509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11c1d684b088ad435a8cf032f67560f7843c356a8bada0ed73af39d4f4599d4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZTBC2306512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a1a06f27d0357ea6a76267320bc1ea2956b74293676eb37e8662d73d3a57fa. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:43Z), 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/QZTBC2306513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bfc870fc5e9bbafa235aff4961ab56f73123afc41e4ce2668fd6399740b4b8. 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/QZTBC2306514.