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 0xbeabd703d96be38b92c5e014de2f801cbd55d5acb08d314fb4a7687a872acddc. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cec0768f-2265-44f5-810d-7de416edea6e.json and https://artists.proofprofile.net/proofs/artist/cec0768f-2265-44f5-810d-7de416edea6e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Músicas da Seicho-No-Ie do Brasil - Vol.1
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 0x215d325cb2cb4017fe573549413c12729e297c99dffdf43945297a7a23036ac9. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:16:57Z), 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/BXQ3B1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5f21c82ac98d4cbb9d3430179d5e10025383ad4c06e66f9f512ab3f4da52a4. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:54:47Z), 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/BXQ3B1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e0de9450c61e056258f7d7eab1a43d793fd765e6a75c54838063cfe5fd1754. 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/BXQ3B1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0022404369b1dcb65f17c9050901ba37cb0ff0aef6b97f3c9ee6dc21b7920807. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BXQ3B1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eed1aff82812fc2ccf02b2d443fd14416af9f5e608b473b299462fb298be4c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/BXQ3B1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5443883a5c49691992b4680b13a0ce43e4d4dedc656f4d9450dc11b7a3d3f15. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BXQ3B1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90c418aaa81aeb03d753583afe2ea5d631ab5873cf2c1aa7bce5d9c7226dc0c. 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/BXQ3B2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda91a03283494079e43620b3617fd92996153321f7b7493686f51a268b673092. 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/BXQ3B1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1620f48fd07a2875b38133610a7c5ef7e1797372439174d50554cfa04a520b73. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:18:13Z), 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/BXQ3B1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe17e7be9ec9ffb070280d08e9d350ba07b805b740341c0a853b06dd5a7cb528. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:53Z), 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/BXQ3B1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc0b053e0909ffc2759f509cf4edc9221110ba7bf349125d0b08ed04070f1502. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:10:24Z), 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/BXQ3B1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e45c5cea4eb94d1440eaf15a8e1b87c077a2de6ef80d4598e067e9e850cb2c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXQ3B1900016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a618abed34bc74ab3a135e6fdd80c00486ec685c6f7e374aa5bdc99ce2b241. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BXQ3B1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241b70f18b129c34a116defbb1f7b34cbfbb4a0a9b44f46a898f223acffbb75a. 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/BXQ3B2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb9e2d94da24c6d2c4d6d8b0697a22bb6677c859638cf8faae8c3fa6698e297. 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/BXQ3B1900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87359479e9e653da25d58efea370c67db3c7d6be19b2ce9a89bff8f8e468432c. 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/BXQ3B1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1115d922d3bbefda885cb42078ea94a53f26fe4100f935c498cdf281df00e203. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BXQ3B2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4d942559600e07e310b2296cdbc997bf922de6ba70d295748f198e82c906d4. 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/BXQ3B2500001.
Especial de 70 anos da Associação dos Jovens da Seicho-No-Ie do Brasil