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 0x6d39f7392708ae0f63f333fc0554477de369c17a1266e7c9cd871227ea6a0b71. 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/38db906f-7a6b-403e-937d-eeb48a859d78.json and https://artists.proofprofile.net/proofs/artist/38db906f-7a6b-403e-937d-eeb48a859d78.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fuertes Ancestros - Music of Ancient Mexico
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 0xa6239be80d781ea40f209b6eb45daf46cc67a201ed8fe77dcf0075352349b219. 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/USQB51000177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b75696abf4d16dee44167271cebfd2896a469dd58ef3fbf3a5c16ea0a122554. 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/USQB51000180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54be3262658fbc99252248ee3992a93d226a638518d40fa4cf6cdbde4a5aaeb7. 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/USQB51000184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cc1e011d35e385c31d7a297b1ef73395db2d41458a2b34855cc9549e71338a. 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/USQB51000185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb565ebaae92a42cbe188e250e063e95a35c5e3216fa738d024c018a64c44de8d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USQB51000186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdbf70b5e72295371987f1f95454a83f765664d4e35f799be81e7bb015f93a3. 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/USQB51000188.
Codex - The Road to Palenque / Looking at the Horizon / The Departure
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797aae7bebe49ed91d5fef932ed1b73bfb7c313526a495072e3cbd33dfa656c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USQB51000189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949244ef3a983212a480c475213d491e9236ea2333b9654ab3db32a38195626f. 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/USQB51000191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe585ddffb3f3e72a558842f8b9620814716497c079bfec6c94aafbe4bec4c126. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:28:42Z), 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/USQB51000192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44eb7effb9c7649fbf7a5bd11f5beceebdda8631831795ca701e4575fca8533. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USQB51000193.
Singing Earth (Clay Flutes & Ancestral Drums of Meso-America)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51900f85548f374111d7128ff535a2f412ff1af6b3584fe02ba923561539279. 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/US8640574402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7ec86c994165ae44176033601e34e052a7c430ddf8309e0321f42df4756b28. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:24Z), 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/US8640574403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de89cf7f279ddd83ed8c4dad8633f135677adc2c90316d37bb4bc4faf4dd5f7. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/US8640574406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d67ef5e008130c61fb67e1a0f89782cd343e6a32f5431aa19c4422734c9e378. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US8640574408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b10c831a64d1d2f0ef96ae2a0f1aa063c30b47369f004aa35f5b1e68fcf4fd5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US8640574409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a74189e6275d323ff90e3c06505f6b9584f48581f4f34a5b81525b8af099461. 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/US8640574410.
Mayan Ancestral Music - Healing Music for Mother Earth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78b65269eb32d3ba430c558dea30b7b46e25a996ec2fea4cd3b72332f9cf5f0. Chain 2 (Bitcoin): anchored in block 957663 (2026-07-12T05:58:46Z), 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/USQB51000206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b6c9db7f2ac7f57a42ab904ad44c7302ecc075ee590b56cd5cf89854ee398b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:36Z), 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/USQB51000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01274b445eaa5e5797d84bbf56aa3025fa646b535d2b2dd3ab110d741c9b2c45. 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/USQB51000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccfd4d247af89605e57d9f15d86328c607332c96a3936b96856334bab1825ce. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USQB51000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c247401f52af9e7e6f1c973293864a1b12be3fefd5ed41790a5981a58410a9. 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/USQB51000210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1e5ab10ddce5ef8f0feeab37d438a0af70f522778022d518aafba9acd2ae6b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USQB51000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bdefddc2b1194a28c69b9b062d6712ee5a371e53cbca67f622d20af3193a07. 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/USQB51000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3f0ad09969adedec25fec6c9ae6af7dc4616c51f049cecb26339e2ea38cbca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USQB51000214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60d4536c91c8000c6eee22850ad3a49be1529e94ab9e23522f3ca933353a6a6a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/US8640574504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53efdf77a7ed701b073dffa16b32b20e9088048416fbd36904f39ae765cb2e2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/US8640574507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c1221fd79aa122832a4e6fe7a6c787f97ebbde1c4227711ca4f7e74b1aa345. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:05:08Z), 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/US8640574508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2927eba93998c0578445230e6e179e6af68b6528864b1c87b7da8928f854828. 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/US8640574509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892518a85117f937fbe6eefce6e756206c58b47b8a8fd934ff55892b0ad1456e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/US8640574510.