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 0x1194461cf8991e1317ae4f6cc3bd9a4ed256a26a65986d884ebf35fc71b21108. 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/1fbbaeae-c99e-4856-9e70-2eb367835a60.json and https://artists.proofprofile.net/proofs/artist/1fbbaeae-c99e-4856-9e70-2eb367835a60.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 0xc599a8bf49b50b8a0ca9c824a3d5d18e82ab1181c3444aca9e6474d8ce47548f. 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/BRMKP0800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc2f22e1442734350e999462668550f7f670a32c1685d6f6ac7949258a383a3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:39Z), 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/BRMKP0800170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc684c53c4bc148dccf92d264e3cffba54518844eb91f5177a8d4d0cb8cb816. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/BRMKP0800176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb528afa614c6d83c254d805e54233abbd69d426a7bd707c1d02f4ade7e1fc269. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:39:43Z), 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/BRMKP0800173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4daeb5cb5a9da3057b0bbc7f2e90e6e9e8126f98637c82343602411c96e04f6. 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/BRMKP0800168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2396a0da5018a97acd9b99c46b2e84fb5c0db4048437f5bae3f687d2b20f84e2. 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/BRMKP0800172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20037f8465efc2f9b4685eb0f5c2804dd27b5fb7e45bf00df2803ec407c01d3a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BRMKP0800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0bd349a652d879cab3c6fe5d6a016a6afffdb185ad5b08c02032e9e0c3c144. 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/BRMKP0800166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2900bd71d4e3b6ab444a623423ab4122d96d34c8640c203130c5e80b60e148e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/BRMKP0800174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9654a72bf522ed6208b0c5ece8aada1f272d4e7de5f0c6e4cb1430b071f087. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/BRMKP1000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1febd8dabbf2cb2529e4b159d410317ba87483759d1bb8861a488fb81c14b27. 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/BRMKP1600153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aba8f67cd4dc827cbbcaf13f80f52413d7bbad9bf94c03800070a2fa6bd731. 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/BRMKP1600147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffbdb820a27d760b8cafa9ab294ec7d7df69b650be9bcbb487a2a93b904fa7f. 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/BRMKP0900228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4dbb6a4746bbfe31871affd173ee1b66758a16b280696e484bfe9dc36579bc. 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/BRMKP0900070.
Medley (Amada Minha / Amar Você) (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd15399084d90659cfcd0c2b0e318eebae091c9cf3d8975d4b8921671b83f74. 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/BRMKP1300564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1629800cb5778e5147683d475accdeccb305ff82d9978bb4af0756b282ed32. 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/BRMKP1100518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e555208085db783b5d750c8809df528535de1305167eb9aa60e3a05248d4ef9. 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/BRMKP1700444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4686a95e27ae31b82b20f9f079c2e10807b42b98e6658a57ef2a653a8bafef. 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/BRMKP0800280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac7d0c6602d125ac0269ce15cccd44d217082a080001268d9f11c52d3b430cd. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BRMKP0700332.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61dbb8a299f34afb6f6cb0af62548ed70eeb9ffa07e05f187faaefd29c4ae032. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/BXIW82000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e5f73062573f6d35a8a36914071653ab4c74ab9541ba7236fecb3f716aeacf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BRMKP1700560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95f195dd61f5fccd2a073c88ab0f64c3169e838edd9ef76966456149e07e35be. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/BRMKP1100629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9b514448484d02a18c09ec808abb2907f3fba1d228d4fd29c01302474ce49c. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BRMKP1100637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d98dc72efe5838b810a417f74b7ff5b0c4b221c33e96a496c1769df2e660b2. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/BRMKP1100526.