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 0x8a71c15f8c7e187375b4735fdcce0547f4c7311cd82da23f7a0a6a60a1443d9c. 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/c886a399-c48f-4ffc-af30-597e4bbb8269.json and https://artists.proofprofile.net/proofs/artist/c886a399-c48f-4ffc-af30-597e4bbb8269.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 0x87621d509903a6c6e044673ef7b52d16fc963d0f73bc88d240b8902688bf0bf2. 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/SE47Z2300901.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9453eb566c1eb1768cbb8f436ebeb20614c72067d9f8d1d6478d5d746bedca1. 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/SE47Z2300902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd7023761049fbc768cfe798ec4b6d6db58f3ce6815636bf1ba158af8180464. 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/SE47Z2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8228e826301fc48a047150bec8dc03fb24608945d211cb43f45a269f796ee9d. 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/QZMEM2347151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f098411f68236f07031d247e35e0d1bff1585d8311c2a70a23efa996ce4f7a. 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/QZK6N2350197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec67054213d8768f09847090488f315ae68c78a2320d617e769d8f157dfe71ae. 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/QZMEM2347152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63906ead4ffeadf0c3d494dcd0ad0ac0751bc01f103bc5b6cf3bbdb664a5149b. 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/QZHN52347769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c55413fb8b649b0d73eb13d7ded34521bddb4764db16926781a03b333752a4. 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/QZMEM2347153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ff3396554e773ca436ad383990e1cc71b1ef58c91612e2ff145a3a619c7a60. 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/QZMEM2347154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dab195c9b87993a6c6ea9a80a46177aefb668d65384847acdefe76652541d7c. 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/QZHNB2281836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb80370bdb3a84e0f0412fd6f1f111bfc9235a01ff431fe2946173a48005be07. 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/QZMEM2347157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6c8a16d7dd76ac1052dd5fb83976246e375c826ca87d2e999676609b5bbbfb. 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/QZMEM2347158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa76a4a698eb846bee3d36199b4d3d5a2ac6d98bce7e5fcee00e04a1544c646e. 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/QZDA42385212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59095819ffe687c346fce3a92456ea996e79afbdba6e2c90369875f100b95ab0. 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/QZMEM2347159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01c3daa9f718bbef8d26aa935a2a4aeb761be18c692adbedff39aef7b2860aa. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QZMEM2347160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fe4085c9bd58ea218f77294ac1f814720065d54c528486a25a0aa14a35e25a. 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/SE5752479155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73074c0835acf36145389430541883222caacd5576e90f84d5348c649f0f9615. 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/QZES82487553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63906ead4ffeadf0c3d494dcd0ad0ac0751bc01f103bc5b6cf3bbdb664a5149b. 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/QZHN52347769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69af1dca641dd00893036a8b9d0ff0dc7b6db511e2157ecfbb628bc39db8cd84. 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/SE47Z2500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea0111ba3ca888a9befc2f3d37c525b76e02e7d7820997d5fff6acd32e8130fd. 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/SE6XY2513153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10c9c2ab3ee047397d9271cc22d67e05fa689298b31817d72186a0cdbb24804. 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/SE5BU2529204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc6d85d00597f195557f17a47ea07eab9ce3aecae0905e83a191e98ca9580bb. 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/SE47Z2406301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b19da4220ae6e72d854c9a8f0a7fbf65c16024f19ec32d10ffc5cbffe1144f. 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/SE47Z2406001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc15e4a3584c6fe3b2d25e54244529b87a72aed73148a8b191a4f0a75695855f. 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/QZWFG2480695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387387e3ae1d814c934a1b7019975da482efe43204147dd41267f26fab4232ec. 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/SE47Z2401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cf1cb695db1ea14db6c2964f8830cd9bc617a8e4a145d2ca6f7e71a42766db. 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/SE47Z2302801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f253aa1a32e68bc5d432eaba1f665c0202c7e6237612e0e4cb37391e8af74. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZVEM2362396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d4d8e7b4753818a7edcc2a8e66d716f90abc6467bcd90a2f9ed62a2212b712. 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/SE47Z2301201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa638d4159eed2f010479bf322859fb34f435a4e79a3581e001699f35416ffa25. 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/SE47Z2200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc4e1e0e92fcc7a9c50d761bd39e4551273388113a8cb028b0f180899bc135a. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SE47Z1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde811ab843c11076bac0f7d79ebd3c212204d4381719ce3fde00d838cf3fce7c. 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/SE47Z1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d4c8dff075429c60c9239b94daabbc6afe161cd148acded9326e931259422c2. 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/SE47Z1700101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23607cc665256bbec970b88b0b1b6e73179d7b7580b9702e683b2654466723f5. 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/QZWFM2436484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ef73a2b2c534509ec1f6c51131ecd992e6bd8457ea1729c9cec60f62d2d5b6. 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/QZWFM2436485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376a26d8d970c40401ce9485ed3765cb5232ba2383a364165e592b3e682257e0. 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/QZWFM2436486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db629297ce3d5f9441d13b03229567c7a8e62687f07c210d0545eac3097333a. 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/QZWFM2436487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2ec6d9aae288d35bac6cfadac8dfdcb84b22bff9dbe390cc8e2c9db9d83638. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE57V2205501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7e0d8590852e0387f5c516b2c240170f4de08e22ed159aa6f35a49b0bc9372. 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/SE57V2178001.