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 0x74524a55c92021e55805a7433ba2fb649bb2c69b243265e7802e58575a799682. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b514743-91af-4de1-89c3-63ee1dfbf623.json and https://artists.proofprofile.net/proofs/artist/1b514743-91af-4de1-89c3-63ee1dfbf623.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde38e992198a3cc5128b5610e1de8d4215f4a4a2e28c0c09ee91b524c31a625d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRRPL1400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7770b2e0b174879a91fd5307eb8bbb7b933c84bc0beeb7136e941379f73098a1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRRPL1400092.
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 0x98703413e1d74b3d72e022a5d1599c57b8f35c45a85c2bf80921abf0f5cec250. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BRRPL1400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa655b65bf12c6d8acca33d8fd5197b6c60e232ed7cd1165dc374a39db547501d. 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/BR01Z1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf969c20913ed871801090e3f58cd594aefdeeb66076eddd049d96f302979eb. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/BR01Z1300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d730fd248cf4c8e605caae5f2e752a169a126aecca357953792bdc43ed71cc. 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/BR01Z1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b52d1f79c5ff805b5bcd94b15306f7ccae91717a9a93c3f0fe30be634c63a0. 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/BR01Z1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5fcd4e5023da79804a0123ed7a80966b0862953cabc9c176ce9b37c09be82e4. 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/BR01Z1300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9cd1ce6148adce73c1c0261d07c7790b38251ab2715bc6302ab544ef998ed2f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BR01Z1300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d71e2429188a015f5974f9a47adc9630e2d352a13773b085560abca1e1b3c9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BR01Z1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e50aed91d78154bdb2e3e9e7da23feeec24648823a5b34c434141f242804785. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BR01Z1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ae9b4f72e4a1beacfdc6f884d1673d72387f2cb6d39c94fb3925a03f003655. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BR01Z1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d76aadf109d8bb9a64728b85a183bc7c261cc29c058e16f46a207b5bb5b0875. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BR01Z1300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1aa13fd86c3bcc8fb0a1201c67191251cdf1fb48d2e150eafb1913ba14d76. 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/BR01Z1300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ec90dd7d2103f7d073ac211a0c9b6559ee39d3370ccf83decd57ce8e93df81. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BR01Z1300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba8adeb0522544f9f45c5e9bb09961ec3a0e3b78f01740d9abe486e54ee16fca. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BR01Z1300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d428bebbdcef84d1b96a30c90f9e0c60d3e73e03625731ae23efe3f369d112. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BR01Z1300016.
8Com Mauricio Carrilho com Toninho Carrasqueira e Nailor Proveta, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54e34628426b6f8035922d6dca5c9ed744979ddc79284559f381b14d56f91776. 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/BRRPL0900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36decdf94114f5e789c4dd4a23d39de8871ec2170620b71268f2eb3b787febbe. 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/BRRPL0900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5374554ddab4ae8a26f860667d75a658b010964cde8f7b3bb51fa3d712f7715b. 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/BRRPL0900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fac03d7e64127144136f75ad29453409f50fa47b116878b942691063c49d995. 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/BRRPL0900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710c822e08ef05e0acd9c2fa3f83125cb6a48dac5d9458d4318bf9b99b9b41bf. 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/BRRPL0900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9576e515735e270ba875315e41abb547b4095721c54de169f5512c9d6a6202. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRRPL0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ffd2b704596a0e808b904136b837ca0706e511ca62fde498e39642fc7c888c. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRRPL0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd4c901188cac7bbb749d47131974ba0fc251eff1d0d81cb9232e6f0c2152b6. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/BRRPL0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bff8fb312475ff61ccc73a0ddd44d9b8e07fe6dff74683ee79c01b48b9e821. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/BRRPL0900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b62910f97a3cda19e5e2663c3d2ce9774270cca531ee1d4c901274a33c14025. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/BRRPL0900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61304a00339519a3b5237867e884d65e58fd7005eaf4d89b6df7a979011e0ca7. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BRRPL0900012.
Panorama do Choro Paulistano Contemporâneo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb045809728b40e182c7b262bfa9e4a25b6485861b40327b53ae97d06750794. 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/BRYVE1000016.