B5, B05, B-5 may refer to: Biology ATC code B05 (Blood substitutes and perfusion solutions), a therapeutic subgroup of the Anatomical Therapeutic Chemical Classification System Cytochrome b5, ubiqu
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 0xff77c275de70938637846f1160a3384dd809bb1b817a58be83ecf7938311304e. 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/81cd6b1e-3455-40f8-84d8-d7b3bf065c62.json and https://artists.proofprofile.net/proofs/artist/81cd6b1e-3455-40f8-84d8-d7b3bf065c62.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 0xa3f7b4f295f93d6267a8b8a825cd2027b5edea99b87f1e6e948f7e668efa5046. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USBB40706568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94706b4dc9cc89621a0ad6e18bd3a2d57e28da2aab971ed39c32c59fe6f6ed60. 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/USBB40706799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914d02c46876e3d2eec2f333a99e15cd7797ed08f3aa95c74501d9a7bb5080bb. 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/USBB40706800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306145b8df7078b9d8c7e2e48f9989330465981dd36df9840133fa6699a37e19. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/USBB40706801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8776644f37df59d6fb7dfa82171eda2481921a8a72e809e943bcc99e2966ce8. 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/USBB40706802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670106c87908b6c244fcc177033c2a12b8b77e2ec96e11a71a34e4d6cd3de108. 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/USBB40706803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1641174ddd127fc30498d545d61254c3f3c3c33322e70bfcfe53188b73247219. 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/USBB40706804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a79a75802733815c2ba53b011cbcb8ce7c345f9e418ae9daaf1a9a5a54a1e0. 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/USBB40706805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf511995d93b28ae047e6fb891ef723fe502e1b935fcfb490020bd782821106. 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/USBB40706806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b12b9e39031a60b717960a19b015e60f938705459da3233655970fef673f269. 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/USBB40706807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a424f302bf27fd338b9b97cf11015a67e812bb68866f7d64706dbd8e7753e6. 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/USBB40706808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f009202e0573b13918acc07316eea8e7c3da2b2087db75bf915097238fdf1a0. 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/USBB40706809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f2d2f76c89a93ef00d63ebcfcbd8704dbe0c86fdb86397010e07bfb063c007. 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/USBB40706810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dda0645f8c8fbca2214b2ce55885a860197193987d933b029aea27227b8632. 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/USBB40706811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea40b51d41768954c93d27472e05ed086a82f3465fb098cf0cf655fb1b8caac0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USBB40580038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757d3dba28924da8cb3ae971c851802d3da66a2230fff88610f1550dbd8835ed. 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/USAT20501318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556134cd5ac98a53e91b752510d32a9a78df0c970f1fce680b41a7616b98d61e. 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/USBB40580039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18adbf17fcaa78f0a9f52b316f9f1db7dc35c3c4cf80ce8ba05afa600cc83b71. 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/USBB40580040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46707cc14a3ab742081a1cec9f81fd201d53c08c0b5dedee33bd5569fc0e0b1. 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/USAT20501316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07689653035192b77372eea1b34153636754c0f9b13fe89f0ef8c5e6fab4fb59. 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/USBB40580041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53b360cacb6969a380e9519ca7dd2277de8b7afca01b099eea8228750ca15ec. 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/USBB40580042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fcfbd3a7137b10ec803ddcb8e288a778fd2938af750b73d6ed735fa4ffba7d. 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/USBB40580043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4ab15ae5fbb564ea480f453f067f6214280adfba84e837aa30a69240622234. 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/USBB40580044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac98e2f282755203c08d7468d4da5b5d6058c070504e481476a7ab5d808f0f4f. 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/USBB40580045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b9b1607ebb960ce2278c722cdf1b06ced338aef5a8cce995252c87688daba1. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/USBB40580047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c45f4ec8be13dede4c3ab1cd2d42fc28cf9bab11c6630f1a1dee44fd9b2b53. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USBB40580048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ac7a285fd793aea467a9b214e753b1a3f6daa086ede570ef451650c921bd1e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/UKXN22344353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d1b7aeb957ab2e77787a277777b62d78673c475edbcdcea57a7b4387355952. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TCAHG2378913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf921dd88b0387a0406b344f7dabd3481f88fc8d9054332a63425a540cf1f5fc8. 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/TCAHG2378927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab2b5de18eedcb39ec06b7d2066d8e4a22a157c6dd33cb3f0e65785aefb06cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUM71303126.
Get'cha Head In The Game (English Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59b2341a714919d5be8e11fcffffce8cf8f7f8093511720520d02bee5ba9ddf. 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/USWD10527945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72debebb233dc771797ea5e431e852383b000ab5a805355c5522bc937ec01c31. 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/USWD10527736.
Get'cha Head in the Game - Karaoke Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe610206b5ca19d81f4a452c3fa7ba3fc464764ce263fcab6be59b43c7c426b9f. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USWD10628911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7a133367665b4da060ab9454665407e70417f6416ef2ca9a0871c1e9e653a3. 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/USWD10629508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bee89b60b24b52c70c8688fe4df237652c649d919d12d5e63a0a68e2295712. 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/USWD10628175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f86b3844d049938c95c23edc031a4ee97d9337ca26cc7ef277c3a208b8178c0. 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/USWD10730806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46707cc14a3ab742081a1cec9f81fd201d53c08c0b5dedee33bd5569fc0e0b1. 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/USAT20501316.