Edison dos Santos Machado (January 31, 1934 – September 15, 1990) was a self-taught Brazilian drummer and composer. Through his creation of the samba no prato (samba on the cymbals) and his early reco
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 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 0x76fe6723fe88d8281ad1dc784e63d863532265ac13ad284da039d0d2e4b98a28. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b9b6962-e026-445f-b9e6-bd0c32b9209f.json and https://artists.proofprofile.net/proofs/artist/9b9b6962-e026-445f-b9e6-bd0c32b9209f.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 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 0x43d85993b3ebf2a99c14d67e823b491696a517ea87e9615afd7454706f367e89. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BRSME9400348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5343eb3aa2a625e663ddfdb9b734409f4d89bc61986911d205762cf5e89d4d4a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/BRSME9400349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd5160bd8902eefe2b02b105686a8767b068f29c73a05ba41af44eed31a0468. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:05:46Z), 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/BRSME9400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c474fae6e64df09ae055fa61699cb09a88d9b9d9aa4fac2cf1605c12c1b97e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRSME9400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35bdf25c9eab0a33d64267550def26baf08ec4366409cf2a06b8732bdc2cab5. 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/BRSME9400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5f045ad10b2293936d86f03885d21a694c7c63f29ce071bd3bbe7d6efb6201. 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/BRSME9400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce471aee13eb0c7b084fc8bf7867a3933e07851cd44ae5e84dd19c54a3b2b87. 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/BRSME9400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2832d1aea79c8315a1b100f8867f8850c563d8783a9891dd326fb523fb1a16dc. 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/BRSME9400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4364ae913767417968120a168bded8408576935ce7038d953678606484f3e167. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/BRSME9400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8b5780e749f7093013d063eb8c522daedcf74132c61311d21361637e26cb86. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBDCR2400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeb5d64ec138210251e3a09743d5df8ffd96e15475e3ea3ef5c4f83c09f2cfc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:54:55Z), 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/GBDCR2400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f4d22daa7d5557bab52c1f2bae02c04f6c45bf4859fbd05752f98585400ad7. 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/GBDCR2400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8b5780e749f7093013d063eb8c522daedcf74132c61311d21361637e26cb86. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GBDCR2400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeb5d64ec138210251e3a09743d5df8ffd96e15475e3ea3ef5c4f83c09f2cfc. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:34:35Z), 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/GBDCR2400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245714ad304a05a0e73ddca88cf644b58d6cc6045675de8d45db4534aa42e117. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/GBDCR2400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b75499e8563ef6bc1654ecc41cabd2e827f9308d9f6cf88411651ae05c3a17. 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/GBDCR2400100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7533cf29f900d8ec4ec358599d118a0e3345727b4a6503f6d0fb63e18275bb5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBDCR2400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8bb7d233d0a728c0862bae31dad0e3d4e3125c636e68bf850e67bccae5d3a4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/GBDCR2400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4543e1fe15e0ea5f6b7452047edde295e8eb16bf6aaef899d1d6b287f4e7b032. 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/GBDCR2400105.