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 0x234063450b6cb2073c4e6decc544d05e31f7296e3b2fb95bdb84ae70123c32a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/938e4310-4d2f-414d-9d8b-4b9dc0fa0576.json and https://artists.proofprofile.net/proofs/artist/938e4310-4d2f-414d-9d8b-4b9dc0fa0576.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 0xa4e2133b6ae9a832b29d94a10ab8f22d766e708119046039c28766dbc69b28a3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:40Z), 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/CACWV2514820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06baf555eebd30e62285339c88280e8c969200061a7e84c45bb778580e9979a2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CACWV2514818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae279747898d6434d707ce1044d0f79538f3cc52a218198df387473f6ce1cfe. 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/CACWV2514801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9028cf2e096fd1228acc9243bf04c0f8af33b8f4dc4f86c37642933dcc181af9. 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/CACWV2514840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81564b965e46d0c2ac91b3c2329d69b1b388c13279a97987659d883d701659f2. 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/CACWV2514848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fd0a107ec284bf55e3493e6e3c1d948630837b5b52f409df404abc4901379cf. 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/CACWV2518831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe047d7130b100062596239af5d172fbd007e205fa9e5ce7d66d1bed814311942. 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/CACWV2517113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649689ac23f55a0ed05288e5f94028e86d81b725f3b710a8f0e772f0b50c03f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CACWV2517286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb38033e20b1b663907aa4d4627cac40195a4e1a32888d7897d567b92a007e4. 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/CACWV2518835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcaee7cf68fea253216f933bdd1a931c37c25a38e3c88760cac46651816b973. 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/CACWV2518834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80cb0922fded1927f337354047819f9769ed39789eab9d3c062387650d25245e. 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/CACWV2518833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731f6ba9f66686afd9f9b625663e0ef861e611d5a05276b2c29a24357f95f5af. 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/CACWV2517391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93840fdd184bcc79c99ddc5abd3effd114792ccaddcdf7167aee7c0dc3de81c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CACWV2518832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3827e338e6936a2729d269c01c088eb296ee73dbc4eea800ddec8dc816394935. 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/CACWV2517328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca7497ca64f5c7c208f77e266c81c4debaf28eb3660dad403bb9ae8cef4db39. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CACWV2517318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8932a2c11d8c6bd2172d6ac96cd3256bebc3384461882328f13c67d205340c6. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/CACWV2519904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb3573f34df3dc5340814aab904ca519add93895e61169aa06b1e9988ad9906. 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/CACWV2521636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34976b21374d3b90e1cc271738d12876351fdf96fd32c01ad462479ff85ae8b6. 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/CACWV2521626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d8b201f1140db20fb189d28ad6c40ec0b18a86ede8e985e62fb9ce08dfcee4. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T22:58:03Z), 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/CACWV2519950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a18961c8d7f20fed9f05fe126afec75b2e7686916c76b1e21e4e6e0afe98c8. 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/CACWV2521637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbaaccff8ee3c59fbcb3bd724f37a9d70d2b321531dc1d0cad2ca144718868c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CACWV2520131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29da959178e69aae70fb9da59ed265d1077697aa2e0a9fb23b8db468aa773ee. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CACWV2520186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3e04e0f97a177a6f53cae3fef5d650686d94f60e25cfb644f9dc4a27b31ef8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:05:45Z), 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/CACWV2521628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc19b291e96e4b80e46fa0e7d88ad8e89b0760ea4fe46506ef1a82e912f4cd91. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CACWV2519986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb68aba269e2fdd37a8f13ae5beed21457f777b473802df03b3268d87849e33c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:23:49Z), 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/CACWV2521639.