, )—with several similar constructions (, , , pronounced in American English as )—is a term with several meanings that relate to Italian singing, and whose definitions have often been misunderstood. B
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 0xa238aeebb9d516223ec74b4b6828b6a69355a69313fa2d862e67f977307320fd. 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/400bf156-3fb0-4509-abd6-3590c971b06f.json and https://artists.proofprofile.net/proofs/artist/400bf156-3fb0-4509-abd6-3590c971b06f.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 0xe3d2405b06fee603aa81b51c7818792d2e52fbc2029896a4f2e6533f305741dc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NOYCA8701010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aff791894acbf4e704ebea094743fa70e50ca9d2f956c3010376bbb7b8891a4. 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/NOYCA8701020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e2d7b2b2d8a8952893670d41c63348d0aa09d5c884ba04fb9fb04ed947251b8. 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/NOYCA8701030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe2f5d8f3564ed60752b4b41110fa0bff3397966eac3cf0fa17efc7a8b3a7ce. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:31Z), 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/NOYCA8701070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c7d69456d7dae99772e9113a85af810cf665bdd6c3e3e20b5dc49eba1bd12c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NOYCA9001010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f60f97ac1182325dacf94a63a2af4194b548ce4c221cb49b3167fbc3fc57b7a. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/NOYCA9001030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c757842e136147df244bb45a7b8c57d6453fffa6553b7dfbbe8641857a1d7a. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NOYCA9001040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdad5792840cdb4acc01535f58f411b2d00f71634835e3e1b39157518e3e1cea. 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/NOYCA9001050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18337ed8975572c4372e39524961ce59e9a9a0d07fa901370e339679ce444477. 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/NOYCA9001060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38d80912d40d2a5589ddbfb8a9e6a5378b7d2a3268f26347f0e06e1b3cfb72b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NOYCA9001070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa05b62464c67e7dc2fdaa812407acf549bd8c9858970288708b14aff8c298. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/NOYCA9001080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab64faedb5fdce4a9ad2efca0bc6aaaf45593d802154fc2546773737103fbaa. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/NOYCA9001090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eed744ae2695223c59ef267fb56effc78c73d89433916aa5f3d8b1c285a9b06. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NOYCA9001110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0b6a3333b53492d24c1a8f82275d2d3202cbaf6360e3032b7bbbd5372397608. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NOYCA9201060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720374235c14ca75b2384825b8b864625c6b9b7382d1205dbdd55d394fb8990f. 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/NOYCA9201070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbcbdd9ea7063d3cbf432d416ec96a108724749bbdaabcb7aa2ae362321758a. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:38:38Z), 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/NOYCA9201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb203ec51ec891903bf4db54d6011e0bcff6cc9005b35e1c99e49ea6b12a15647. 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/NOYCA9201090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d8ffa4335b8e333d7f6b0844d7d59f9cb00d730666f86ae71193b9c602ab0e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/NOYCA9201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5cfef1e93ecceaaf1488247260e73538d1b1005c3d959b2748675cdc0e5915. 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/USAT20100574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dfcf721a2374e315ca0b50859271b680582c38bb58f7523ef4079a4d7945d7. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/USAT20100578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58061dbea81ceb0ce6d2c7e373c3c107d3aabd7e45f01fccc48b2209836238d8. 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/NOYCA9201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x176a1a61888b4746383b7adf3469c8acdcf6e7af9d5535fb1aa0ad181db36827. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NOYCA0201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13141c917e59873dfe8fca004fdf244bccb29b6fefa72507b1a7f4f00f6a3886. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/NOYCA0201100.
Bel Canto - Dorothy's Victory (Faskil Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a0e49d1b1de3e3a0df2866e7d95541e8d38f5d4920e06a0b3e562fc125d0d7. 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/NOYCA2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9659d14ff421d93b5e7fab13ef823f98bebefa2d60071f0ca0290847644793a. 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/NOYCA2300110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f22319cdf4ed99e30899c888b137db291ecdc62e974312250c8a81e54ff6be. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NOYCA2300120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4897816b56db2cb7c7743cb101e753c37f35555a526ec227e2d105c68dc50061. 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/NOYCA2300130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d46293128295ce1c9507b04c29ea1b1cbe7682882798df82ddcdd8f5ea4996. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NOYCA2300140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2841695bb08f47c8fe1765ef45c832d00b215b4f22e0194e336d18b770534a9e. 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/USAT20100575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9db133787654cc875f454f32969f28fb7e0f905aaa084625b2494fe56d5216. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/NOAFE0016010.