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 0x3f550df0ae195234bfd7852fb7640b687571695be71b68ac730b53401199ef8c. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7667d52-ad20-4522-864b-e74b601fa0a8.json and https://artists.proofprofile.net/proofs/artist/f7667d52-ad20-4522-864b-e74b601fa0a8.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 0x0c3b94566b2b7c52584e83ff2fbb2a5926aa80a1ff96cc19a180c3af5ad79156. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6V82139540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30991e8d2c339beba8da9bfe2d27dfc76ce1616413d46fba54bbb0714dccdb7f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FR6V82139541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48de2c9f70dd143cae1df6ed007d2b703693ea2455d2583d7044819504931b05. 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/FR6V82139542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0279d58579f8ed4077b0b65d01f4b1f8eecbc0c2b87acd62ca8b98782378e15e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR6V82139544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e0902e8926d9e2f0db2264f2f3262f76f1c5ae10422f76109ad549b52eba12. 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/FR6V82139545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be194f1baa3d73aa6e6b14f906bc7abf5eb772064104beb0876c9b0e1072740. 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/FR6V82139546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7ddd9e039d151dd2b4b30c08d15e0846605d19d922281a7d8a1f39c65b4356. 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/FR6V82139548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d0965f1fa8306b306e969ae317bdf7d75156a5257f9cf14e16892ab642362. 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/FR6V82139549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9dfe9d95b6c12d1bb4e9ddc3215026662796a4bd4e448db66575565d6f4a0c. 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/FR6V82139550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3999f654672ab907080b95d5b5e15751d6a236074d8b25210c6a4649ff0d68c. 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/QZHZ31917571.
Xico Bizerra: Chama Infinita: Forroboxote 12
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20c78ba88678b7a1988e15988af7c7d6d2eced8d01cc5dd8337cc9ff470416b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRDE71800034.
Valsas, Canções e Tudo Mais Que Há, Vol. 1: O Mais Intimo de Mim
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3f4b336be72e777065c0b91a1545b9f84bdb2f6b31b167af3b232b7e45ad86. 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/BRDE71600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531ccedb3c1a40a4488e74c5dccb3056e62e47ee17dff9ed2048d4cc7df8d0a2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRDE71600054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a7ecb1df1052ddcd2d1d6401d71d9752d7940a28ca65c5170645906a9e258c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRNPD0300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dac0a392dbfbec7a84ddc68f60f30f2ff0594ac4ce50fdc4d9b3925303dcb4b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRNPD0300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1f33aabb6c951de4a8b267f50d350823c7dd8d255e8a86322553d99e637854. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRNPD0300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d68044fa9b5c02f1ab1c7b41a578bdc17d82e1afa5ce8d970f7cc7294af56a6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRNPD0300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208113dbc22e56f05b89274e73825cd8fad837bd5a8beb50d674596b174d2af3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRNPD0300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f75deada756ff7ceedf3c2f37c548a0b3106df5b1871b9e7044dbc22a5aa730. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRNPD0300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61acedd16c09667e25f6ee1c9d4e9809c5b893f0a536b28e3118a57ce48ab677. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BRNPD0300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90309f42762acdefc4c397d2ea1e86c05c5c4b2d3ba6869489d37d80ca386a46. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRNPD0300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd579beb9443ed5f0b79f8cec09e284881692c55f9bfb7053e65b478ae927214b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRNPD0300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2cd18f5ef6a33b9808e9b1b1e1a2b3c3783e4252c9bfe27a5fd5404ac511d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRNPD0300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d255ad95b87baaff5184167ddfb5da95e1f74822bcad9e596c567ae85f9c9. 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/BRNPD0300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11af97d64b2789266d22d2f1bad5864a07459d6788081485cdffee663aaef903. 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/BRNPD0300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911ba0d2b36afbb21b0c6969b75b64fd6c4270dc4d2163af5f3fe020f1c72b19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRNPD0300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a47f0e6d451dd87011ae90836313f272634369154901b1f5d5c79885bf2a34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCDQH2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb98bf85c94d7ec0d675ad91502209c8bb93ab53b48ccb7e2b0dfe8ed4eced63. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BCDQH2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12076b5feb0193ad43c5fbadba9dce82e5ea003a5291c9ba33493e3f3700c36. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BCDQH2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x606bd1dc371e2526f851bab9d3e36e62fbd501c68c8e299da8705daa605b94dc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BCDQH2400032.
Festival de música carnavalesca do Recife
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da69582d0454101f790fccf500cd6b1bec29ede296d60b196a3d2a89b8cf59c. 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/BRPUI1100904.
Forroboxote 14 - Sabiás, Jardins e Arrebóis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e866d7456c4ab36d9531179ab43715050d707a23e3b32ca77ac48299d5299. 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/PTNG11200663.
Forroboxote 8 - Com A Sanfona Agarrada No Peito
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5649d373ba0b9cae9c5d7ecd25e025f0e02c2ae0197887f0ae5ba35bc72aa873. 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/PTNG11200551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f9d444985f40476f52466d3a7030230de77713527e5f6a2df42a5c73ea9439. 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/PTNG11200552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e23eb53c0eb2f0113ecbaec11e088203b0d03958656c54196fc6f7564e3525. 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/BRTVW1200004.