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 0x504c60f6e320f13753e6ff14d599285d18cd46e6fea236dd9e637ec164024bdb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5af21a36-d183-41d7-9b62-ffa1d101c704.json and https://artists.proofprofile.net/proofs/artist/5af21a36-d183-41d7-9b62-ffa1d101c704.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chorando Baixinho - Abel Ferreira E Seu Conjunto
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 0x84fbfc4b4e779d186dd780fc030fb2851e3e6d7f3cb9f1a242a82812c63254b1. 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/BREMI4600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6f3a8d26d67ce02b910d13db3ccd8fa087313c0323b7b83d84b49db8144755. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BREMI7000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cad230fef416419c7e423e0438d1dcc67d0061c2efe656a6bad7200427059cc. 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/BREMI6200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a4458945ba583d5d397be4ac234c9c5368dd0632e34cdf38743a4d074724d5. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BREMI6200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d908be01655a98e1b21a5ddb761547da05052172f939dfaa6837555096b317. 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/BREMI6270194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30fa373e1035b49f1ef8a5415c70f83ffdc20098e1c7fe92713d863e29d8ccf. 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/BREMI0501053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a193b91a627a398475ae7145b40c73090307bd9f1902a9a9f87592194e8305e. 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/BREMI6270195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3c3c7ba1c6183cde2a96b070c844a1d0fc5ce1a6141524510210ce6ec4b769. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/BREMI0501049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d1d1f8e4495bbe24b6d4327a1d33016a3872e4e82f734d08dde17e2ef8e05e. 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/BREMI0501043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c67a4e0caac7efb77029e36e389ea56a8ca9cebf633f58dcb981905db079b07. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/BREMI6270196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7169bcb4704ccbe4ad3d25d8d91993668d89dabbf27c965258278170b2b946b. 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/BREMI0501040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd42b0d96797ccd10cd0c219d9d70eeb1d0927a64480d246aff2ee7630f5ebf. 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/BREMI0501038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1bedd2d966d2dc4f2263e9e6069cefeba9438074e6f034c5ae74c60bf8b68. 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/BREMI7000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ba98dfb0292ee540e3cd131f7c6b513d14e96a5bb9a2f7245780d43c248a0. 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/BREMI9400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe912ad78e056430b40eb54d88f2b30024e04c2e1833ce9f691d7d8b242d191ce. 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/BREMI7000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903c7b39ee4a5135e0d3b4a5a6d9571aa9ef5353c4cd592ed34da05457fd977b. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/BREMI9400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80181620bfe29096d61f30af5118cd4707bb29d442912f8fc5cf4099a87b9080. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/BREMI9400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c613cb4a8c062da7710617195df342aff0f8411327729a82c6cfcb7da8d40a4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BREMI9400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa091131f4ec3dd5d0de5c34592e475914dbc5c1ae01c597594b3c4df838cfbe. 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/BREMI7000299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189dbdd736fa0d6faffc50eebe1fe813fe0f42515af7814f8878127331ab3cb. 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/BREMI9400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708278c00472fd1526c9ce3482da17474ad9a2a169047df467b32771802da9c3. 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/BREMI0300279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9d2c0e8a3bd8bf01a00fea8470ca65e1a5d736e17ea6abb6b41a04729954e6. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/BREMI9400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705977ab7799e8504ab42628b2de5c434814b050564a45cee2ecbc8aeda0376a. 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/BREMI9400041.
Genres dansants brésiliens & la habanera, 1948-1959 (The Dance Master Classics, Vol. 8)