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 0xa8329064a1a6117ca34ab03ae298508785ae3b5fad8dd9e69405560d04b85929. 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/4f2c7ee5-74b9-468d-8f32-35bfe3e53c0a.json and https://artists.proofprofile.net/proofs/artist/4f2c7ee5-74b9-468d-8f32-35bfe3e53c0a.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 0x0385f18f54b2b5a321994ffe71d14827d2193bd7c03283b015e0ed19dc6a82dd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/NLA329617056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da4017f8e04be5869f592b8c579f84f886eca81924f8f20fdbd2eaa541b78ee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/NLA329617059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d05fa5ae38b7d53d6a7645f97b71dba7567ca578327fa6692c6bec4e2b3bc5. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLA329617060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1c57ff30ab4340237611c49641db6bd4a831fce5bd870a8ca23d3331edd305. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLA329617061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933ec53b2fdb551141ac898cbeb4f5d17b2a2701213e21854a524a43211fdc08. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/NLA329617062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b73ec6484bd9775c1f87552113ef77f5b67b6cc244d20aff454da35dde2663. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/NLA329617064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79ec03135771c318d3f058ac5107c035aef9026986666531abce4d1ea6e65ef. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/NLA329617066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc223c9476aee3cc0258268c130abbc16f4cefd1828bda6dc78cb1a853f653. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/NLA320420795.
A Chorus Line (feat. Tim Dog) - Original 12 Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ae3858c94bcf9c2e4478603ca815ac78a26b40c6adba422bbfc514fe0ee6c9. 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/NLA320420791.
Traveling at the Speed of Thought - Hip House Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb548acc4b9d0daffa1d39f73281e8313bc2b94f14d9a3dc6894b16eeda27023c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/NLA320420790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644a37806c261c985b4abad353950d3269af0aad996a451dcc49a4fff5f222c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLA329617053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd310ebe7931de417995ac790d470f7081b42125f1384588c89f36656d53a967d. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/NLA329617054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e8698ac3b679529792933c287272b47110d9dd5ea09d908dde2d865f051b4d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLA329617055.
Traveling at the Speed of Thought - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177e672a1f34bb233d08da8b8e7b4fbf2ae7949391a4b97ccc93044179d4f803. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLA329617058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23c527ba79628fbcfdab98a7e7668aaacc70126d55799bbefd5acfb7af478f4. 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/NLA329617063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7335d2a26b3c31c5b5e634d4128c45445b911993ba8d8f7cde30ad5e215a282. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/NLA329617065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8319f41b7b95c9f1030d523776a351879a3ab58a2757d8107c470e4ad64806. 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/USUM71305278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142f604fdb045bd44077a8025b04d0a5d50ddfbbdfe1c8dfeded44b9b3924b89. 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/USUM71305310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb66a58eea20a7fbddf0259b83e3bbea3a213efce47c8d63cbe70a0232ddef63. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USZXT0810132.
Two Brothers With Checks (San Francisco Harvey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3c97bd5222198610f9b969f061a94913966187afaecca85aa497d2533149b6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USZXT0810134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd697b09fcc82240aad5d5cdd285761e1847d065f1c1db920bcc2b43f1b210c13. 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/USZXT0810136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbc551243be4d86f73ec1345bea7d3ebde22086b822f78b0356204e18083e09. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USZXT0810139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda4d23eded1679541e90d537faa23d5300ae3af6ed0b1ffb9b02cfce51f862e. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USZXT0810144.
Ponderosa - Ultramagnetic's Ghetto Funk Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2beb4cc522c6a7b187e04e3f22e14ae83d1f3a0c19e49ca8954736cf44a062. 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/GBUM72307490.
Ponderosa - Ultramagnetic's Terrorists Power Club Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1768d47b400ac7ad6215cea8370e7d89eb6e71f96725c47a5432e7b2417c45b. 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/GBANY9400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00955407ced624b56fea861cad26dd4471e08744e85588ea652b4466c14ea10. 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/GBANY9400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177e672a1f34bb233d08da8b8e7b4fbf2ae7949391a4b97ccc93044179d4f803. 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/NLA329617058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ced01b5a1527a7bb84ad3edd1d01874b3e6dbda612b0a0a8fd54942e0f35c9. 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/NLA320420794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe00955407ced624b56fea861cad26dd4471e08744e85588ea652b4466c14ea10. 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/GBANY9400025.
BrainBender (feat. Ultramagnetic Mc's, Canibus, Prince Po & Rahzel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1814944e5a52b98f13f661e3987b8318bbeed81c858fc8188ad7f1d44f5ad247. 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/US6881000634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644a37806c261c985b4abad353950d3269af0aad996a451dcc49a4fff5f222c. 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/NLA329617053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7644a37806c261c985b4abad353950d3269af0aad996a451dcc49a4fff5f222c. 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/NLA329617053.