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 0xad7bd38ca1412432b0b868d91ddc2c8624caa80e3fb80ea9f36e3907146bdb02. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/361d0233-a158-4352-b477-37b4e96d8cb4.json and https://artists.proofprofile.net/proofs/artist/361d0233-a158-4352-b477-37b4e96d8cb4.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 0xceb9e2f07251bb23ff1ff00aa592a4fd443a18cfabc6113a44c03f7e758613bd. 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/QZW9K2443208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b59480654d32ec59b4416a187d89fd3fda7aece9cca1a80250468a70463919. 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/QZW9K2443209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e0f4fb77851bb0195e8efaa7053dc050cd5d1e42524e16140a82a010a3485a. 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/QZW9K2443210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc0d61c311dcaf829c1adbeb4bd832ec3b1606f46eda5506d25101926f0d7b9. 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/QZW9K2443211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa804c95d154ca8df22d4e4fe22c2b07427e064816e5cbd76a3b75eed083e0958. 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/QZW9K2443212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5a5861ede348613862b6106c13a99d1bcfa21ff9fa09d950a76dcd8b0d01c9. 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/QZW9K2443213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e9ecdac1f5e8ca52aefc100a0381873e8468a3c4118e8f9c13c501455ed00b. 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/QZW9K2443214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c6bd83ab548a9167454b11061d8ca764b3e87cd55fac8aa43aeaccc7d75b49. 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/QZW9K2443215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cad4e1e1f167165b25e5ad13c4cf5503bb7fc4bcb8cc4096f9995165f9526db. 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/QZW9K2443216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d32771e5f4ba61c2d130b790e2e9fe1b7dfb8e2c43c021f61eaa0f99a19bae. 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/QZW9K2443217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8335bd881f5af48fca51955fc0c701a9ee5572078afa813cce9a96ee039a214. 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/QZW9K2443218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce7f9434781b108dca9c03eafd2e99674aa82697afa43033000d5a55428a105. 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/QZWFV2471087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cd9173cabc3f92bb64103b42eb7007dde6869dd401aa3f6661b8243b6b5358. 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/QZNWV2426063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe8e1b5a6d1cc897a0f63be62a9f182b3c2d5c13646bb468210097e4eab9afa. 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/QZMEP2485082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a5f44ffcbeca63720ecf2b521c2ae8f136beac524fab4de47520c4ccafb8ba. 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/QZWFV2471090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986940abe2d2c17dad74b5cac68eb54ec9f24e2381c75afa189294308f99944d. 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/QZWFV2471091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b1f23f96761fd0971a62d2ed154a5580ad7b3e6abdb17eedce04c12c3917a2. 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/QZWFV2471092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0fae6094f5deb1d0a138de069c0e20798fc81ba26398681f5fa42be795bd02. 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/QZWFV2471093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47c16bbc3eb0329d923596faf1abb93b8ecebcd57128435253a44fa6b6eb9b3. 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/QZWFV2471095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4466831c009d7c8327fd0b0ea760eb1ab741e48133fbbaca59053a8ab2bc25c. 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/QZWFV2471096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568f0713b8a87fb4585fc411f68fc00b95cd107130f48195755d880696e1a946. 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/FRX282312055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1d7b7fba34f5be884ea97522f2a9e7d5245edc613e5ba85fe1a5da7f799bb3. 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/FRX282312056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a52870a485f274a590f92ed9a708d70a3197df3a24f2a8bd480fcbd429dbe4. 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/FRX282312057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511d6bb009df3a916bdb8a873edc8e88d088f835dfc486ee979a7887804f67c4. 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/DGA052260382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f64e414eed4b8dc46e2abc93969e8f625ff0d1c5de95d6a71f33753ff67391. 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/QMBZ92485508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451c1c3f88927025618ef7c24234374e3e0d8bc6f5e1896e505cdc774f21517e. 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/QMBZ92485517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d3d63f80c625c71ced3f431af9088ede2b44b66f38c04fae18f9c1d837d975. 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/GX4R52461841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d491824bc4ab7cd9d454ae952a54e732cb337f0fbd8346737fd5885acc48204. 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/GX4R52480514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a22c74ea165f917d590550cbf2a7228bc642888c0f9958975dc06802ec31854. 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/GXBDS2304970.