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 0x957f69b0ac5912de2a50769a8da045d3bb45256a9d1ad00b147111c114c62540. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/041e0413-9d78-4d98-85f3-f20a7cc22a28.json and https://artists.proofprofile.net/proofs/artist/041e0413-9d78-4d98-85f3-f20a7cc22a28.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Infiel, marginal e artista: As composições de Miriam Batucada
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 0x903f0bbb2352487cd96ce6e631154304942772fc0c22c45d8c62c04a50cefa27. 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/BX9W02300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cfa9510a222a0e6e28c845c07eb4dc290591bd0623db30cbb42dcc62c0560f. 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/BX9W02300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf730a322f8a3d4424d4f6de00e6706f8b3f00a4a718597997c1dceeaa1d11d31. 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/BX9W02400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4059144cb4839bed8287772a295d21a4942ba676c259bd8796020b3b04bf0807. 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/BX9W02400006.
A Hora e a Vez do Samba de Paula Sanches
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b44f205d752b5562f9437bf0bb922a4b40a72063f963e1f2a9fca13224834ea. 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/BR39S2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f824736d4b5c016648bbd8d42224857ffc8b9835bcad95cdb1b086273ef14ee. 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/BCAMN2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8189a3194c4f2daa8636b3c528be09b17cbc65c6a085bb7d5131b1d43d0cd950. 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/BCAMN2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b339921916444adc7e65f8d50350d57019726bb1b70c0d27d7b19582bd49b6. 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/BCAMN2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e22a8e4f480ddfff7cfe2c3121400bc322224dd7e30559a319c69ae3a4ac16. 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/BCAMN2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5960b419e9dcb65ee5e85befe9505921ae472abbc4022bb906ee0a760d21a37c. 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/BCAMN2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afaf1bd9e50fe1dcb1971fe4c0c64dcf583346d7a0dd77c6cfbf98d1dd1fa92. 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/BCAMN2000006.
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 0x8dd843395103302b3667c03c811f55d2c394b8213cf3e10f1e3e006dcc45d3b3. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/BCAMN2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ddb020068317e92b648e1df5f8de39f9cca8a5a0c9d175ca67f3c383c6e993. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BCAMN2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16758f0be9a3fd5a2cfc0d3679a12f89db18d8f32969be38c2c1ffcd47eb4f8. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BCAMN2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf31b8b2395a11118551012d2fe7561759bbe75bcdb46effe53d16999fd1b9cd. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/BCAMN2000013.