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 0x7077d82cfc45f26128af36457f7c88de3e1dda32adbbd4285506c4f8eed8b6d3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79b2ef20-2393-463f-b1f9-cfa661888917.json and https://artists.proofprofile.net/proofs/artist/79b2ef20-2393-463f-b1f9-cfa661888917.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 0x090b0c8d28e1ada425f8a86bd0b44b04251c1f07fd05e68c0b97658f1e0b1b12. 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/BXKZM2102301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6da51194f9eed37bfaa92011d580af19f746e80231c64e024bb53330c60037. 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/QZHZ52283425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b45464dd6da0f42c162e7213e1387636a9725db84b658463ca05d8ca4914c8. 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/QZNJZ2278035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92f88a551a5d4bbc445564de53089fcdce0406e70b9f4eab29448a9e01956c8. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BC3PG2200263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcded8d42a2ab6e0be744db26f2d589563cb98e1faf8a6880055bbe41f0e4f4. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZW9L2254401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5b3cb54b1230a72fb31bf6ec1014984e812e554d3c593caf4c0d76649f2d37. 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/QZW9M2214057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163cc392122bce8e4bdf3adab62b9d082c4b986ec9af4ddaed5aa57eb113d1aa. 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/QZW9M2214058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7e46223d10d242073d685e2e4c6f332d233098b8907da7c40a822a11a90725. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BC3PG2304452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe77f03f7e538d6ec4618db22cb2b980daa84978bf4a98389eb61d524862c5e0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BC3PG2304455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a0defad6d1c1ce456e830362f5f98cd7b9033c81ff63a27663eef6af8b46e6. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZNJV2387674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9666316110e984ff45e7330aadd4ae678e45cff3901ef8b0fc8b26270f99c3. 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/BC3PG2304458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb225ab2fc4ae79b7d11d53e1ee13df72ef4860fae2b2681ff85ca6c49e00c9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BC3PG2304459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5cbd00707516c24dab0a1b1a5651e40bb3606d5f99889581323a1cdaadb4a0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BC3PG2331395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34eee550bd89662cda27d7ee044536c70c2bccf1f9e7623ffd9acdc9600552a7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/BC3PG2331392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdddcf7aae2ca457d6b2efddea8dd36403b26c1291e4f251155c3aa79ed35d122. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BC3PG2331393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2cbc57c31967458b4cea1966c8c3e39a846e2826da0155df7c52c56a2c7d57. 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/BK2242400366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c69832270a8741ce4976d4785f9fae7ec58769e807a9b57d2b32a02a5811c00. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/BK2242400928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57483ac02175e34e09dd7c4b2a42cd600eda6c99655b5d6e7661167db264efc9. 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/BK2242401403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1970d8795e39e593f70512c899ce5b05d256198fa31e0c19cc9d97d43bcc93d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:09:01Z), 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/BC3PG2402633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb089bc78451f8321025b3122bb9f5c9b41f300bd9a9e28720b6e33af774d8c7. 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/BC3PG2403464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afe819985ec861ebb75609cc13be4b4ab4e620bc706ac58966f4832e9c9030b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC3PG2500558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bc7b42c66171a3c281ba192991ffa549298ae96d219238dcec8a9443abb3df. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJZ2342260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5670f530afe3d5cbf9c9bf5f2ff68fd92ccb5a6a44445ffad3febf4d3c054d53. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC3PG2200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f98d199c5b85aa81fea28862e0ec91f542e9ec15000a45fad6503af164c3411. 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/QZTPX2222784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca2ec21653024ed720cf0823f47b9b72b3c58f58d594d79df2894e644bac44f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BK2242400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aa9712a68a0b704229e1f363a5d06fb483044a47761dd7f5523a5ac780eb19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BXKZM1900311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ff1c27dd51cff192dd5d451438fe73027b7ffce5f5a2f4aca5d3977b7d0156. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC3PG2306870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e9540f33cb68b6d40f86b46e16b8edd564ee843de7b6eadc810e89e554af0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC3PG2331043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a490c11da919a89604907c95c4ef419d986911a02c97a0fc57476febc60cd4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC3PG2401070.
Dj Guh Mix e Dj Dubom Apresentam: Próxima Oração
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bb4d460c74168bd02c17133621d977628524c20f22ec67d90775c09aa0d53f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXKZM2200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754ef153f7e755c532795986f93bc29a4e87a2d4543b2debb7a9529f06398d73. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZNJY2230674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c9f360ca15e341efa138a026dcf0fced275747298912b4ea75cd8f9bf21fa. 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/BK2242401605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaaa9f209100ae8615c574f9c0f6472decd16594d03030b3f1b06e8d015d4a6e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BC3PG2500352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7302b706e0390b851e28215b2fbc56d57cad8133458d9dd61b5cad1326644e. 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/BC3PG2305615.
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