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 0x057255808abd93d27b62a6bed49d03340578b2a3e670872ee688a4696df5be07. 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/452108a3-66a2-4b3a-bd1b-256548b9db7a.json and https://artists.proofprofile.net/proofs/artist/452108a3-66a2-4b3a-bd1b-256548b9db7a.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 0x16333651a8f454debbb595fb8003fa4241bcc7f5396097f7921b454ea33db7b8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:42Z), 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/QZFYZ2048422.
Tributo a Pedro Golobio Con Sabor a Pueblo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ae2142e70b8ddd17272ea70e0b14ec6e8ba57cf43a9a95d0efe634e6ade2f2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/USL4Q2205038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbf4b397d3e82c3e9b36b7e4edb94d16a28410b433a208fbf190a355e4e5f3d. 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/USL4Q2205039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d9cb822cc1e952fe23a6fdbda19c2ee9be6feec2a14e64e1387561757cc603. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USL4Q2205044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefcf0329512a1dd86d20b94dff9538bba529ac9192694c83c00b4c16b567e17. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/USL4Q2205046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3224e61fd0b01e23cce81a35cd20a6ca3acfd734fe8d2586d810967ac9e102ef. 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/USL4Q2205048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343f508e0436306694a8b5075fc3d43756dc2a40185d03fe5f1faaff8dea4009. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USL4Q2205049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baa4ff4404b5b222191780781fcd471bbad89958219f6821caad8c518b77e33. 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/USX9P2364194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408f4e694a7ba54eb2a8a215141c67393e69143a7073534bcbec3a37ce4b33b5. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USY282314642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c263a4ec7e022f1c54e221034734f91708b1b9896d52fdebb8cbc98a0a07772. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USY282314643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696a6f847a65ef6d4f04443d0b3bafa06f1684e3b90d529670431d029f52f502. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USY282314648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a1002b0f30399330a3f86f22ee89520d7724b7846976a7ba7a12c0c2ad00d9. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/USY282314649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27de1f6f7092cd9fe1114a631635da47e955e50c1a6a01406b9720ae6e54da00. 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/USY242462749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ea4191f0bc06b874fa74015ea043b764bb5bc5da32d6658b4b319119234857. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USY242462750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefb2b91fc14f22c24f20ba53f8791b5a1aadcaccede112dd1f51dd4c4cbab62. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:43:33Z), 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/USY242462752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dfbc6d5dff0a2482f12d30038a0f2653358f127a1f7edc44e8aeb08404df14f. 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/USY242462753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8902c8983dfc0cde1f991f4ff12cc32f49c3f72543e8a224bc00add005cc88bf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USY242462754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c8c3d44ee0a214cd0f38eee1a29c5bb021920c77d761ebbee17e8641f2efeb. 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/USY242462756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6e78206167759580df2de55847d96b0614cdb5b0a15c36ba899a8bdcdf3169. 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/USY242462757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffc7d7aa388190ce321f03b1e0a7028ae3395cfe6f296cc21e6a03cad9cf56c. 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/USY242462758.