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 0xea3f4a174f3258c6c5b372257074d6558ac0f8f238be2ea75c330e73278a3836. 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/b0b93beb-7ad6-4865-84ba-e945be3b9284.json and https://artists.proofprofile.net/proofs/artist/b0b93beb-7ad6-4865-84ba-e945be3b9284.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 0x91dc19b414d54f3289ad670acb38623dbc23e7f86cef34344af256a545d1a7f2. 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/QZFYY1922214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b60615f0b092dedb73296e20fbeea5f08b8e954aabfb764541f85a6bf22290f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZHN92247865.
i don’t wanna write sad songs anymore (Acoustic)
i don’t wanna write sad songs anymore - Acoustic Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480595146349f7d22e48765d4aca423b9e1786d3b98b3f21484adde47a2f1714. 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/NLRD51632979.
i don’t wanna write sad songs anymore - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb43cfa3f9bdd3470977558caf55493b94678f18900197d4120f95ccbecd3e6d. 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/NLRD51632980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57dd37674bf24855bdf780c581890283331fb55b0c49ce31e8bf7f9242fdf58. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/USLZJ2309391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0070551d53c494a91f457ab332d875f66f92691e61e6ee126a935d885628b334. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/USLZJ2309668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1613a96ae8cffccb9bf5cba62d0b5d8df9da4737ccce7b99b60f3339ba827236. 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/NLRD52023123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59ffb3cceb54e6f86a4495f6da464b0bc9dd8ad08131f87635efc6a78b0d4ef. 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/NLRD52023124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82c1c9a9946d94d71322bfb9570f7eaea25294e7a7827a2d919d54569f79a06. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/NLRD52023125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c59e579a12ab6e7df56ac5598574d6d98e67329283a62d2572e15396eea7acf. 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/QZTB82350300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403e1226892efb1c7859d4d0baf332eb47fc9771ca65723c990890d63c448541. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QMFMG2372834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2090fb88da85669f2cf04516eea7c18725754b4e781b71c8c74659851b5805ff. 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/QM4TW2432772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d0f8decc236d355fe918dbf11d2e849c72934a57f485a793c8d41b1052865. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/QZES82485722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403e1226892efb1c7859d4d0baf332eb47fc9771ca65723c990890d63c448541. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMFMG2372834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a1695805e87fafc0b691bffea4f9d3306d67601834bad3528e4154351c3fff. 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/QM4TW2421654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2090fb88da85669f2cf04516eea7c18725754b4e781b71c8c74659851b5805ff. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QM4TW2432772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48457b3efebb24e1742e852bf3d3aca2dfb8db17c30cf2454a3d8176459980dd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM4TW2445338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47909bc3b6f2ae03b4132ac6bec69f2fdafa279189bfe25fc39c1821dcb47c8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QM4TW2445342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcad80f4729a29709eac8d26d4fb3518073cae0d7d16f8a546c668adfb4b778. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QM4TW2472569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b79d67fe184dadccefea8da522d54838041a43226d2494e066ccca97337f764. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/QM4TW2472570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e8c96b59399c83b0d3ff6f1a93f320feb438748285680f2b5f4f8739bda50f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZTAS2400199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed26542535c8e64624085baa5828c6501ce8adce4a68fccb8365c8be1b2364dc. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZTAS2400201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e1040278c2171e2f0ea443c1c2ccb3e08d4d0d44147b14276e311783d9266d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTAS2400202.
okay maybe i'm still just a little bit sad tho
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caead059b8191c887cf4fb9b079572af5de8289986b790b653b12b695178bc4. 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/QZTAS2400204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462609d3aa82588987836fbd74dede010721576bb592bc3dd2b3c8ad2237c75a. 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/QZTAS2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4267bcafee0612fba780ea2e1452a0952d262bd102975da3eac84bd7065441d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTAS2400206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad666178a92cc0006aea6df4f863f114b32809d6ddd65879460bebebf63ece4b. 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/QZTAS2400207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c16229708bb9a6c83027fcb14a0596005cc6bf79f9b766d7e561cd857d9a877. 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/NLRD51632955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e01855a32ee6a08ca1ffe154f51922fec7d8ceedf484ebddde2cadb18513fe4. 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/NLRD52023151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbcba0d69a8477124f31069332282415f8a8282ed7124f535cd0671ce37f4f9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRIDO2111779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36c310fabd4d50e408adc84eb5b59d20e3d7b688cce1ccf9f0724d9b10b503f. 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/QZTAW2294019.