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 0x24cb8d10cf3ccdf2f0fbd8e0d6ce5bcd77a67c2f653eae52df6508bbb2bbb2f1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4e457b5-b478-479e-900f-b7281267d28e.json and https://artists.proofprofile.net/proofs/artist/e4e457b5-b478-479e-900f-b7281267d28e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sequencia do Empurra e Toma (Eletrofunk)
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 0x0acd51ecdb8587203d5cfaa2e307359c4b722b7379632e26a13152230fa4cd31. 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/BKZ122400005.
O Tempinho Gostoso pra Fazer o Joaquim (Eletrofunk Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f70f9dd4270b0b23daa72f0b7adce582ad3cb7c4bc6e01ee4b7e4393934bff. 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/US7VG2381660.
MAGRÃO AVANÇADO DOU PRA ELA BALINHA (Eletrofunk)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b733129c126ee2b4dcdad7126bd4af486cee66116a77da2819c3198c9b86de. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/NLRD52252971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1285a14d4e2c9672374740cb44b705c2be183af95e18835e39899858ce20b521. 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/NLRD52252959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dadbd9d4ea92291ec0b64d7668d25e47774b58b392574092039a033bb1485d. 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/NLRD52255098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b144aa118531616f724320669a1dfefd905ba1eb1a4652216bbf109d524f33. 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/BKZ122500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9818e00b174fdbfdff10d3c87667c03a5eeb262832998ae3eeac252a2d5f37. 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/BKZ122500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b060b2858ed38f662c87af6de2e8b93d25c2fdd96804f7061f11e306809a3a. 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/BKZ122400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624153622e559df6c9e72ba2e6bcf076756392285910b3cff036e0b6d5554269. 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/BKZ122400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8f0ac4af67034afc0d9e34e89f18ed28336cf546ef62a2171c80b501ebdd22. 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/BKSAI2400251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab890ea3088327537237ac4e892a7334af3999ce21461392588a6ba258b2b120. 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/BKZ122400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858a6c021b46e0e90c74bebaf9b30c0e724f5a3854a4d2b859f715784f8fc312. 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/QZTVM2404044.