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 0xd0d92aaa2d63edacdca22b25467367ed18a7e5e73cdf591117cbf0bef2c2481d. 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/68ff7538-589a-48dc-afe2-45d001e5357a.json and https://artists.proofprofile.net/proofs/artist/68ff7538-589a-48dc-afe2-45d001e5357a.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 0x0f393cec4f9ad0b64c967e7ef2fb83043b0908e24f12d9a89887e081466c4263. 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/NLD231500601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5358b5e33e7fc5f4223da3d5e32a455996127112f94c76b3e69236d9cc9d1aa. 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/NLD231500581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa457ea5068fd126dae2e9d97977f047fc0dd67a3898c76c70be29393c99cb400. 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/NLD231500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd923903e0a0f9581947a2a251eb4d7b480ae6ad87bd53b8e6a0c55e03a82465c. 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/NLD231500582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066f50026cf4a5da70c637eceb7644fa4d7768114c5c00331f3ac778f2cc2e36. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/NLD231500583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ef411f82f855823832ff15d9d842c029a299a4fd6ee28987ca05f3c78a900. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NLD231500584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4a28cddb5157203529b6196959998a87dfadc58581589717a229d0707ecafb. 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/NLD231500585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efd9dc1c9ea8277cf67ee009afbb8b3e3082a809bcf7bd7d1ef5f12eb791077. 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/NLD231500588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e825d6434d650119bc7384fc068fd70fc6a3697956fe79aef083c8c5fb9fbb0. 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/NLD231500590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe556befef1e3ae2aef9eae5fcfc63c725a13c4c98a122168d3489944c2bfeb. 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/NLD231500611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bab90d2db5ab00ad1e57ba5773759620f5c0160a3499bad5e34541dcef9a25f. 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/NLD231500613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7a8f0978959592319732198b9a4faf28ee9631291f46dd8c836587a0ba410a. 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/NLD231500595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13c02186d24a814e462585e97caa003a60c9b2f101b2eab29d887d9b1b8f7e1. 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/NLD231500596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f811886a9e8196536e09642dec257188fc081d4413b8860e55f258b1c3a353c. 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/NLD231500598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacce0380f0241b72b5e8b99cad5227d009a456cf2e174b561ead3704600dbe3e. 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/NLD231500599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227fb078999a333754b1a3468886a71d9b6ee6ad476d983d43c4229c6acd425c. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NLD231500586.
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 0xc485d4d6ca9b8e786c354cf0ffdae1cc2f1aeea7cf0d8a34eafab80b77f6ae95. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NLD231500592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fdfbeffebfcfcf881d60a86ec481f6938e683aca8ab80cbf1acd5b676d1051. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLD231500603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27fc414ed28bdc559ace3495dacf4de2f87ba420818bad8a3180c2bcc473c56d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/NLD231500604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171b2ab697c964fd9b1ef7d0adb6576f3f7038dcef9ef31fff085271bdb0a02. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/NLD231500605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f39222ea76a29cebcec9b831510367a345a250ccac0d7b1d25bf4c9c29bb89. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLD231500606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff15759692169d5776622eafc42160e4c65d010f4639ca44eab503850412bd0b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NLD231500607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61c07089ae19f7e8735af01a3fb422c8a6ec20785b8835b8b30044b2cdc4e16. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/NLD231500587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6733e0ed8b62d8b4e1ec45fe0e8ddcf71d8ac09bec7d9f77ce16faea3c444e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLD231500608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab744b7a9f531a67403418220af1d657517750d08c33d79de2b2b3813fa5b322. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLD231500609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9309b90dbb5cc5eca86ed6f306ba298fbe4450cfae2e0ad7bbb2a1648d7914bd. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/NLD231500589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e5410f3df8687dfc654deafdb507ee30ad315a12bead66d467b2bd8e3eb50e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NLD231500610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ff67d80b497f06414d1ca34a787fac029b081dc0fde6e2e47a695d38ddc175. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/NLD231500591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8332be7c74043a1697ae300726b3de236e6cfcf509b7a86aa9b8848bcb0a04. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/NLD231500612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c330be18866735b98607fdc8e81c87d341bbc40f426d0a6993d5e70209dc125. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLD231500593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed90346fd02e5a1628d5a8e219151545b1f0a5d75d7bfd9e0d048c2de86f81f. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/NLD231500594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda17054feea4740d393b3fd233a8f52ca8ed86019eeed1952d397502942046. 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/NLD231500614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da00cacbaeb3b3fee89105d82cda91c334ea13c3882987080a9a7c65b706318. 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/NLD231500597.
Noisekick Records 026: Noisekick & Sjammienators - Zo Lang Het Maar Stampt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bc7eb5700960d78da661ca9f2770c4153d95f958803e377f29e6af37381d2b. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/NLD231904541.
Noisekick's Greatest Oldschool Terror Hits #1 (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610484e7359c2bd0e17fdfbebb5790416590c4ffd9d880ade9642277e76fe254. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZFYY2027781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedbf11f5da4ae1eb440eaf5f16d3bd5d38fb2206f3f3e3e4047e3d0092ef2a3. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZDA52035237.