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 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 0xd6cd6010ce13d4e83dd46086c61f1f9aa216e2efdc7ab34aa37f9a0cddee3339. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cf82986-f87c-4455-8ed4-7bb873a7aca6.json and https://artists.proofprofile.net/proofs/artist/9cf82986-f87c-4455-8ed4-7bb873a7aca6.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 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 0x6e8bac7c722513a335bc8a16d8baecdbe2330cdd6ba421172b4df6f86a6c48e6. 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/BR03D2402000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e952f30530a18a4875792a0213457a3353270b01013f803027185627f7bf38. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/BR03D2402005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491bb8dfe4128b2b318829ce903f3ab988853c5d51d23aab59292423ce213735. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BR03D2402006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee91be58ba5ada47a8cbdcca1bc65dd07070ef66bdcd9332f5993048b6d874. 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/BR03D2402008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a411c9fc96ee5c94ab951235a1d865d383e3a2d58803bdcfd561f5926348bb9. 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/BR6AH1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5668a6f623db82980142a6f979376f2aa7f56585926b71966b21ec5971809. 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/BR6AH1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6192c48e5091bb33344a343f436a6a438db274b02b7c28dbe24ad1115e0d40f5. 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/BR6AH1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0e395938d6e1461a196597e38576554c269ea2fc7ddb1c4b9525c4c684b14. 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/BR6AH1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d4afc93f48daeaf62228ba09e6cc496899c3beac3dede1d3c2f366aae692d. 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/BR6AH1600005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb744418a4014261f80e0deacbbd08bcede86aa553ed096482882cc192d8eb721. 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/BR6AH1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605d12f23fd067b93d13e59af81a8b345c967ad49f6bebc8e966b7cead8a56e. 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/BR6AH1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3433b7232a3ce36521797ce6e30b75c1174aa07eb0b5a52e868ded0e66b9a0. 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/BR6AH1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2179b8b6e5a4aed307ccb2d4f3946147de9e54c376f5c80f8f5f024751221ed1. 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/BR6AH1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237313e1fe96f9976c3623c7937612c7b00ce03704ae1ae24e249575ddcf0098. 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/BR6AH1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c36ad0952946a6dd6b4566efe0b0bd874dabe7c9dd49c348838ec1944e0d91. 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/BR6AH1600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03144b10206ffa4d4b7f2344e883dfceb9e86ac0d4180eebbab0ebeef784c2b4. 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/BR6AH1600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c27bb2376cbc3bb5ebae9d7064bbc86c26ce7f433df1ed8b5f1dd35e85c067. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/BR6AH1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f6a37c294f6609109b3feb14cdb45c77e368dd6e5958f29809c812da02eaa4. 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/BR6AH1600014.
Filosofia Reggae no Estúdio Showlivre (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a7ad150083c36f829384c407097a0f68fb9a8856343ac16374cd23faa9ab84. 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/BXSSW1702438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c070df86fd8d10a7f56f1ad52040cca69a484902706dcf3586b7f69eeb623f3. 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/BXSSW1702439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a80395d3f1814b135af4892cacee1a51825c2e40f5f67cecc21abaff633c3e4. 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/BXSSW1702440.
Filosofia Reggae no Estúdio Showlivre, Vol. 2 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e1858438796ee50d1ddf44f7f9bc2170925efb9a86233f322060d9b52e813e. 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/BRP602300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f6a37c294f6609109b3feb14cdb45c77e368dd6e5958f29809c812da02eaa4. 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/BR6AH1600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a411c9fc96ee5c94ab951235a1d865d383e3a2d58803bdcfd561f5926348bb9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BR6AH1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6192c48e5091bb33344a343f436a6a438db274b02b7c28dbe24ad1115e0d40f5. 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/BR6AH1600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3433b7232a3ce36521797ce6e30b75c1174aa07eb0b5a52e868ded0e66b9a0. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/BR6AH1600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5668a6f623db82980142a6f979376f2aa7f56585926b71966b21ec5971809. 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/BR6AH1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c0e395938d6e1461a196597e38576554c269ea2fc7ddb1c4b9525c4c684b14. 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/BR6AH1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f53685cf23946ea98201e86c474fb1bb126308f090089847d9542d463e76c4a. 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/BR03D2402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c27bb2376cbc3bb5ebae9d7064bbc86c26ce7f433df1ed8b5f1dd35e85c067. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BR6AH1600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605d12f23fd067b93d13e59af81a8b345c967ad49f6bebc8e966b7cead8a56e. 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/BR6AH1600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aee91be58ba5ada47a8cbdcca1bc65dd07070ef66bdcd9332f5993048b6d874. 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/BR03D2402008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7046a16a2208cdb58da4dfd011f4a7a0629c236850fc3a57b43f822e6dc725e. 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/BRKPA0400180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95950f88e00ac6f02a4c502a01a780b8976dfe6477428312f1954daa554ad0a. 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/BRKPA0300082.