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 0x6de03e380c95d1c0d16feebf0ced51d9e7e75aee6ccd243a2e9d134f885d61e9. 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/6baa55e5-6940-457e-987a-ab52a7909517.json and https://artists.proofprofile.net/proofs/artist/6baa55e5-6940-457e-987a-ab52a7909517.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 0x9d778283239307e922391597efe70f431fb094125d3fca66bda0c54e00fe139c. 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/TCAIP2494724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2360d9780c116766b2c05e3183eb83b5179ed03d6f5e403760c617ea8cc4d6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UKZGC2405990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b9cc91309766d23ad80e54d2dcaabd130152ddf3019a24614c8ef09dbf6568. 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/TCAIJ2412841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980ceb6b45197d5c41b4f173942aaea3f9a9cb2f3aecaf9e3913e681d5fdf8c4. 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/TCAIJ2412846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97ca55f0c0580d47e9f05bfb4c8327f2c45d90ee4eb117a26754dbef1b7e676. 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/TCAIK2412848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a21e6971ce6213cca4df4ce109c98603699847ba906913481b59c2d424e757. 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/TCAII2462411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7921e82098f21ff0a23c313d45116458d228ac60e760322be73ca0ff59640798. 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/TCAIH2462417.
Guess I'm Not This Tortured Artist After All
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3a568bd89d48cbc7f9deda9c05eb3054729b0e78d43a196b840c7335621d6e. 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/TCAIH2462425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9384f52a39072129869f50ecd7b9a39f36535a7f4a6df2061b4e8bf09443dd50. 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/TCAIG2408480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb084c6a9e3425287ffb62ccdc42ce1fac24590d223b8030d6b39d17870b92b40. 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/TCAIG2408485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac90fbb2f34b9f42c19e6b8331ff62be88dc92b651b2e618a0875a10aa1932f. 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/TCAIG2408522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906feab158cbe11779c9c75414b03c01fbc9cc97126fc7ab4e47a2557bb9b150. 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/TCAIB2448661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906feab158cbe11779c9c75414b03c01fbc9cc97126fc7ab4e47a2557bb9b150. 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/TCAIB2448661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98aee030e397a52ba7b1c8a3f6d851abdd9f266796741e02b08f760df9cb756e. 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/TCAHY2479415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d405166272cb757c6d4e43e8bd1c3639fba74e6bcc26ef8270fd0af97dd7ab. 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/TCAHY2479417.
Your Heart on Your Sleeve, Mines up My Nose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b63661daed7ff7c521ed60e32e80b3d63ef0b834ff1e0014b54d5396629e1e3. 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/TCAHY2479429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e48de2864425a96ed8e85f30dc90c7f97c508481c64a5927ffe02ce8eb36c3c. 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/TCAHY2479431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf84e2510c9983dc69986ce37bcaa1b7cd5ee8d8f95968a1755588f2cd5bf233. 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/TCAHW2423502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ab6d7555a3388a75f61ea2da85181ae6e8284799df0e5f4e7dd79fa3439e94. 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/TCAHT2458667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f6a6fe2ddbe1747c17065c086e3f4a717128db23b37ae6a912e93b65e6010a. 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/TCAHT2458679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a7a2d71dcdd9ef12b1968efb9deb12f022b6db37ade4c627b4373770e9c7cc7. 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/TCAHP2306336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a08982f50bbe5cbc53c914ab94505817f5b39a5a264c4f1be9c860fd60979. 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/TCAHP2306339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0764f85069fb2d1367fd70f7c4e69838d6d1132efddc7af2cee0859679ac1ed8. 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/TCAHP2306341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd5f63a527f32925fb5e39b6daf1dc072b0fc1fa8a852d44896b8ed4f0c1b9f. 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/TCAHP2304914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca1a4da6043589ad4808e5691804aad8ec5992c6382d6394082c5e8995ae9b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAHL2389539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aca7df1a0636e5ea072d4d6928af3ac1483ecaf1249932883060e6153f5353. 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/TCAHL2347055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3781bf402a3e351efe7982ebad0f48219c0f6faa0a93393d4f06c3a64de0a67b. 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/TCAHM2389555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c968f336763561c47ae537be5a3cfa12bb351d55e0f984624c15e0812bc8ae8. 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/TCAHL2389563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f3f03f620d5ff0952bae0a810a0bcdc4b545c5a2b9ff75f4cd422089a751f6. 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/TCAHL2390809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff3a64e9c8d91de4513b45fc314a0b399018005ed25755447b0d33369db580. 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/TCAHL2389565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aca7df1a0636e5ea072d4d6928af3ac1483ecaf1249932883060e6153f5353. 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/TCAHL2347055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8d01dd93a3ecb5f664b752fe4eb55ae3eab6a86a2d2b0345d9d9a43243eb57. 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/TCAHI2342709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57e2b73ecb51f4998acbfa4d479c4e3c90219911bec79ba7e0ec198a76b3f13. 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/TCAHI2342718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9ae4bfb62c3e29c2b592cb042af4966051a2996ea975d6df82394a7ecd9473. 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/TCAGQ2273109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f2e594303d5779e78c29a0d2613a04f344cccde98f7769193211b47520a3c7. 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/TCAGM2221125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf4ec2b409d56a9b52ea4f57310f188bd1d573a2f67998b946446f4d5dc289c. 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/TCAGM2221131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcaa8b5926a94a98e4f79a5ba3fb50ad310ab00bef3ce8ac90fe29be5554befe. 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/TCAGM2221129.
Talking to Myself Cuz That's the Only One Who'll Listen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24b87c3642e73226bc1bd3bccdaa68040b70f48a73ff0f0ea7faddc9236d0b5. 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/TCAGM2221136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc199fcc2eb116afaf7cc6a3aa23aaed55bf271af8cdc1ad653d5727e6631babc. 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/TCAGM2224950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d1bf0f6563a83e45dfa7c25082764251d1966a61ab3095ea32f6af3bf52a31. 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/TCAGL2285766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d98d78c9f7fae442d01924a4667aa413d451113e729a2553c1a6168e9f465e. 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/QZTAT2490789.