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 0xf9f5f2598373075d13afeedbdcabe51195ff847e9a1a885768d435f9c6898148. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/41b38b2b-6dae-467d-b7df-48a2e190f10d.json and https://artists.proofprofile.net/proofs/artist/41b38b2b-6dae-467d-b7df-48a2e190f10d.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 0x23b4c21b8eba2ba64b7a65f42893d96d301438bb722f88cbcaafed86bcf97155. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/BCASQ2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b7331561fc26d2a92315ca0754609be8e72ada1673b8be17f72a8c6bc6c3eb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:57:37Z), 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/BCASQ2100002.
Consagração a Nossa Senhora de La Sallete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f06e9f16c06c2525e6f33394cad0397a88a9b3522c17a8ae584ef7609d83439. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BCASQ2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8fadfff824f55cd33e24eb0b2ce9d0df621814d18ddffd7225c30b6452ed2a. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/BCASQ2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59380ab7f310160150580324e8f3c40550155c82bc9753baae5e1f3de656f76. 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/BCASQ2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24309fde529170cfaede46bdfc4f2d143be7b410ad9c308aceda98945347dbce. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:22:57Z), 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/QZGLM2278003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635cdb51aac899a4a65e5cdf5f00ebe4352890567b093f073681277ed0dc0cac. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:15Z), 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/QZGLM2278004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93209188af351f4429552ede478c6e1aee8d17c1c29c8e2559f99e66b7eaea13. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:55:37Z), 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/QZGLM2278005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7988a6a82c9b9cb829405ffec23f81cddc17eb85682cf49b54068d37d64f7fbc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:58:23Z), 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/QZGLM2278007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02534f0bb183a6a80d42b970b45af324e1f2d1155eb015fb39f43b00c29bf4ce. 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/QZGLM2278008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702794b96b45f062d5f79df1b96f726f149bdf20a749473ad8a31cb70e702872. 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/QZGLM2278009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d17402e84b7cbb1f3e2a788beb45f6582b21394c0278e383abfa536bd472a0. 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/QZGLM2278010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6696b719028a9882857ea78303d2eda37df8cbf298acb5d97dbb1b345ea588. 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/QZGLM2278011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bdb22eaa547fc3456a1dbf9cbeba7430722a8e3ced60292655d14a2cf0ba3b. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:51:08Z), 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/QZHZ52288879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb91586bd06ef5daed6bced2f900520d377235a78a3dec3439c1acb9d9830a50. 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/QZNJV2390223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b4bf707937246c04cadac9a65f13b4f7f62a5ce146009868fed7a9bbf5a86c. 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/BCASQ2300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf3b0570ab5d373c3fb10361f3bfff626c222f12b0125821fc82b31bfd72f4a. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/BCASQ2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265b914ab85da4bdf1c67b24bf308087e11398da1897c38e5322eacc4f7cb2cb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:24:35Z), 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/BCASQ2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eafbd386944a44d078c01fe45fbb68b2f4e99e933ef3193766d0673644db8bf. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BCASQ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704dbdfa5a9a8b7547deee9526a7ed4b6e2a735cdc0627d7ed3e22378c6c7f5a. 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/BCASQ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c7a55c0ccc563c37dc82ccb2b2be68ff440beba7e33a2a194d63bce7f8923d. 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/BCASQ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e193cb91d2c0b3102b2a1b454d339aa8ef1de00b9538b28d3d49324eb62129. 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/BCASQ2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e35896478add2fd39252523bb9b6aea1234f5b7372b267f02818edc2b03118. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/BCASQ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfdace2aa6ce7bda5460f291f8876b32e6eafcf2e91da7c7f729476cacc1c4d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BCASQ2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94cfc1567d7044bde3280e8b29f8dcc0cd4598b337e695abacbcc4705f7c9d4. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:40:01Z), 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/BCASQ2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a69330ab6f7a7181ffc579b13967c50d3a6065a28b75272fb6ae618e1e3c34. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BCASQ2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054ad8aa1382581af6d31b76c6619052fcc9f6a479401c73a9733350ad5864c3. 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/BCASQ2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c19faf233ea856929e7e7d6148a169d648bdfde64c2a3e38925a4a81214d6cb. 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/BCASQ2500006.