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 0xc4990a2a1ee787b75af10f16f1b5efed14e61c9706778d0d108bb5fe6f205026. 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/c9ac9040-8acc-418e-a84e-44b4906d37ca.json and https://artists.proofprofile.net/proofs/artist/c9ac9040-8acc-418e-a84e-44b4906d37ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Forte Forte de Lacoste - Pra Começar o Final de Semana
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 0xc6a463f73d8f1978b6c115e846328b6300251d2cb7c77f1bd5e13b659d46f8dd. 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/BC3PG2304607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba314e6ac76d4e9986dccf4afa4d83039f7255f0f89fef7e442101b5ee76d241. 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/QZMZ92454537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b3527661e5d90398356b7bbca3d2843dfcf71519b7671e2176987bf772794c. 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/BX4IU2202623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc889d30a57444c46f7dd6a0434452192bee1fafbd8aeb0e56825d372cf02e4a2. 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/QZZEB2398683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fb5536acd38b04048eec793a71f0c0e767827fa6c2b04d82ec0e4ef6994d14. 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/BC3PG2400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b26ba0f4598e24360c90a145f06ac232fd4b9edd5d3f36f12cc902bad5852f. 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/BC3PG2305355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b27e452f2560cd55884c32d17e8a289bc5feb52cf7d1e93100b1a3645d5854. 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/QZW9L2332201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63bab0e2dbf2aba22e122fc19735927ea86768499891b2a7b30821f0c1d35915. 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/BC3PG2401629.
BEAT STEREO² (feat. Mc VukVuk, Yuri Redicopa, Mc guizinho niazi, MC Trope)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826430f289f712b605de2144725f511904a6c7cc1c90e3b54ecb964a83455201. 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/ZZOPM2229007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a255776c8ef0dc22a94f2b1185be574063df231f0ff818778b16ab769e512fb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BC3PG2401541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf870914498bd38254ce21de10b1befb372e3aa4529e702b1c61f47fac6339f64. 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/BC3PG2205921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718de8e795476dd776eee0dbbaf8c2e1198a30a65aa9cbfa6c1d57e32ee027d7. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BK2242401006.
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 0xd14330c9362492493fc797b921a17f8cb31e0c6d5f9fd647707bdac92e640016. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/BCM9B2400993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca766eb1fb1dbd706dc9ab8672835157276022ab0290d4ea757b608b93d89cee. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/BCAPW2300052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6b2a9994f348af4d6b214d60a460699731dbe63b92b96d66fa01f7caf00307. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/BCAPW2300067.