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 0x9b5c729c2f11df98ed449466e451b8b8ff3009cc1552ae1ea7d7a28adbf3cb30. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/36b6c168-b31c-44cc-b7b4-fed8a5acad17.json and https://artists.proofprofile.net/proofs/artist/36b6c168-b31c-44cc-b7b4-fed8a5acad17.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 0xd997b5244135a3ec2c51ee6656a2dbdcec688168baebc4e721bf15cb390266ce. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZGLM2304718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec37b1e12471d688b35a9a8a666b25e0707ec6753f2ee886f8d5cf8745d4de61. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZGLM2304719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8c5cfd0b4bd90241e79f4472b3252312514237c4b0b1cf2132b6abef0c83b0. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGLM2304722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa25bfe9f5214f1ba0403ac10b7d303be38fc12afbad4bee1a513dbfc3a3604a2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGLM2304725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8482047975e713635f5cea24bcd1227cefa50f15509b270d6499bff09316f6ea. 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/QZW9L2319280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d00911fee24dbaed8bfd75b37c1493a2a4f216f7d233709824585fe8d5443e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZGLS2419032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7789814dc072bd565cf32e5989d04760fc0b0aa32638fb895c64d7d547c9d1. 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/QZGLS2419034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634c7c12d901503d80deea1602da077b0c6c7335ca120c31153bd8443b87f590. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/US7VG2503913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e55331523009392b1a45376ed0228f155f558a5222f60ecb1590afacb8a023c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US7VG2503914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1774c6345b9871ec8597136ccfe7e707e7c0511042b22decec76b01f113a8488. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZGLM2570459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092f7e880421cc06f414379ec04f37fff78cc1a994ebf56ba1827196ba17e7a5. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZGLS2563509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b81029ff136348e412037296e1a54999b9526817ed1ffe93bece3579d8a232. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZGLS2563510.
Levantei Não Sei o Porque - Remasterizado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef71210ac3dd15a9d0ab02340def4b52a28a96706203bc464ba84993c874d64. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZGLS2587864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3d2564936c32b1375fe1a6cca03522612f11ac2273d1ded9efd37ec62dd14d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZW9K2533987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c17f6023d90adab6166e09c622dd8850e15abb51c819d20a3dfff339ac3246a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZW9K2533988.