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 0x2d4d7b33d2c06866513e358c424b439ca96707ef9658ccb3634d2f65de78e505. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a50387db-ec4a-416b-b162-f3e3601ed5fe.json and https://artists.proofprofile.net/proofs/artist/a50387db-ec4a-416b-b162-f3e3601ed5fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dandô: Circuito de Música Dércio Marques
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 0x2c6687ed6b4a3dc78a3d0fa5c8fd65e06f6c54917b9f3e99b7bc50a3bc466f11. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXZPL2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd9c990d1aaddb488fe605b57609afc7d848a384dd10f5b58847401210bb465. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXSJU2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf767a348f73ee88b78329c7e8a010d242394ad19c34d07c4789749be5757cb1e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXSJU2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19755e27abad472553a80dae574c30ac79bfa5352652ac7ea6356108b379bdbc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXSJU2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9e74167dceb7c69fcb229b810e39e11b0fe72fa198324d14bf07308e649e4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXSJU2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25bf9b8a7448999aed06d9e795c62720e5e38b2f1b60b08730edc4fde1af7f4b. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/BXSJU2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838c47381c28b791bb1b2a8ca141ef878ad84b79023378736541b285e0d2d917. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/BXSJU2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e487b88fda8979e9f905fbe3499201ad1f03ec03ceac1924ac7ffdae1b1291d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/BXSJU2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2374e3fa540b88443bb5d72d49131cab3074d2f8ae56af18168f8da80af92f82. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BXSJU2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75a229673d082409c3b6c1e9c1c46471433d8eaba1654288197ce85341966852. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BXSJU2200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e583305554c2aba66a2d67eab1120b3dd9235f10847fe0bf1d6f54f4e6552d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXHPG2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4cb5119c999e45847022cf792e0c77266332856a6e27c3808ce0aa4021ea1d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXHPG2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeb2d08d96d6eab3d09de107ca381460cef2787b569579a4f11c445c125dac0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BXHPG2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e7499553b0fae8ea80d32b360b68ccb788743ddce266a6f4438a1f90e816e2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXHPG2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdf6864d009b87a7d114549be588d6fd1efa6b6aee1512ff62ad8232737966e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/BXHPG2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdb31e6ba6e39f263aee4955980a9c569334dfe9b0bc6b3f594f923f85cdfe4. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:31:14Z), 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/BXHPG2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb04557c65b1bb087aa1600ea955ab11a9b3561d9d4ab3b201dc240e1f177c72. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BXHPG2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603f0b1e4be1448ce42140ec8c39955d29f54f806e5a7b32b6141c676d5152ae. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BXHPG2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c10dbf3875f6d019b8bc4c9c0668c11376137ab83c3a669dd8147f458ac72a1. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BXHPG1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b26861074ea2b068f5988cc1398bd93aa2ce562df673dbb773f6f353c591ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXHPG1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07da86aa55fe90a95cac8c0aca104e7fe243fdf9198f013a0ad1752ec52fc73e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BXHPG1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd770194c1647020ab292c3170c1fc5785e456b9727ba786e3d92a9c375844007. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXHPG1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x061ae8a06348f4ca99ed846455291057795fdf1fdc171316567893ff519c99b3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXHPG1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389e4984afd47d540eb53b4dd9b0a9be9f192170dda3c2082383b9b1ef0a3fb5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXHPG1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe314c41bc91952188885ebbf715a4538c6260c433c36e08abe60d14eef2b77b. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BXHPG1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151e8ff0f9fb36101bff8245714a12bf7736a90c165348e321902cac4f15407e. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/BXHPG1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7ee7d3d07ee5cbbb611a59a7fb2af31c6cf9f7411aaed78c28b972a49e270d. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BXHPG1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07b7ddfa99b9c8a4765cf7ef0fdbb1220c79dec4a9d0af4d8997ed82a1207db. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/BXHPG1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c9450f25bbda9e123a3e6bc4b4a5c4b9dcf7f763bbc6c3a48f822e4f759cb1. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BXHPG1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50a58e5d1fb4e49166899b5013dc326a3f06fcd98cea08c46c4a45e7922ebaa. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BXHPG1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5316bc1694c709ca2e655d9c921aafb486f3eb0ae2d9ca4b77d3dea0eff13b0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BXPI92000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205d703fa4628966109704f2005989f69b0ad269337bdc1d17c78e345a55075f. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/BXPI92000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65bc5a52cb06387796e665c8bc1b62065e8826c206ca5064aece9cc895657c6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BR7OM1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2590d460c44da5658b55ee6d50b3860ee31d1706fb0347a040902ea8e676e56d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/BR7OM1500008.