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 0xfbb56e4b23823d3199d1c82ec4a7c43cad74715a7b12e2d472580ea91d81970e. 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/457c107b-31e5-4a5b-a304-e5e0ed5057f5.json and https://artists.proofprofile.net/proofs/artist/457c107b-31e5-4a5b-a304-e5e0ed5057f5.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 0xe3f6723391277f005a5c335965f9e2935822022b106138ef276c90000a4db9b9. 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/US2S70762001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dc68d7ddd05c464fafe082560a183ad53f9453d15fdf214d83809294c41ea7. 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/US2S70762002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6762b0f9c0460117ccad19b0ea98dbd580ee380474edfde524bdb88b76fb0c2a. 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/US2S70762003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a3695b1e8702e67907efdca2f44af159d2c26e0ed794a0832fab432113f8f7. 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/US2S70762004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772e8814fae2150b10534d8315ab50cb56f03d884e0cbcecb209d05d7a70bdba. 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/US2S70762005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e211ada6fb35128ca7c79055d29e81f2b9a82c598b544085b4676ead5704469. 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/US2S70762006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0ad4684a65f55aa26152706c5a339807ce1719656fb096bf65f166d417bd55. 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/US2S70762007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a65277c882c618b84d4e167043eeb6de215aafcd3e7fb2d4cc682e4866b4b3b. 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/US2S70762008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf331653f7fd4286288ba3873105aa3807115c2e686c1fc4609cf5799aa9510. 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/US2S70762009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7bc94dc4548b5cff488cae4d45b29ac0b37e44419c9f616de9a02d52241ed7. 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/US2S70762010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4570f2a5f14d1a4b6cf80b0a48fc3e9563697772c9cd64d92727dc148cc83a6. 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/US2S70762011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0492394edb6db10467132530d7cf1e40b2a4acd44725dd52db0b48286a2e0a1. 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/US2S70762012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0356c5ec0efd88f4001c9d057fff9788a1bcf360a8c44936f1863214f44fe0bb. 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/US2S70762013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0999de406439ef2e25ab17de677620c6a11ac816e8059027959700f52e0766. 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/US2S70762014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa777ca4d7079a2362d3cacc8f938eea11622dc6ea27fc33e6b8e567787becdd9. 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/US2S70762015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8458ab52beaf6a39a5e8e71e8e1621b2f93eec597ca8ea8d933ae7a2dc9fb7a. 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/US2S70762016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0460cec7934ee8c3e3104706ed4c145274b163bded95ad4791ab0d36f0faa82b. 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/US2S70762017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafccb403a9c5f5659704336b20469b5a6d5437a7154ce1f6f83bd1f64aaa520f. 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/US2S71680001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f20f30c074b5de8cce3fe05a7997d02ba6f81cdb1478b9bc54bf97915015a8. 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/US2S70762021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d91217a7cbf12a2aeca8eef98479a7d4c5af4c7e8748facd349c046c8e60c41. 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/US2S70762022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500c14fb63d49da2b843cf267d63289aac54f619036f9f81ad55d79d8d99ba5b. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/US2S70762023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7978ee3aa018834737b603baceb22395e32c59e765d67aaa641f4ce20084f737. 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/US2S70762024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ed4e72ca3cec74b6bc27a877939b8a5587768e90642c75828d1e7dab14ae1a. 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/US2S70762025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b9db7c2c602813920c624cde9040f6bc0e331b6430186714e8a011b4a21a26. 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/US2S70762026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb344568dcba289aaf24d761b183faf3a7c2e76771f0c28d2ba3a649664165493. 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/US2S70762027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320ca5167a79fdcd44780a7c7849e6f90f48ca33b45a0ccb3fa5adc978e6f831. 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/US2S70762028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318ac59a81c6924e97a795bc233b65daf57cc05cb964db562da5329399861d67. 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/US2S70762020.
Our Vinyl Weighs A Ton - This Is Stones Throw Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dc68d7ddd05c464fafe082560a183ad53f9453d15fdf214d83809294c41ea7. 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/US2S70762002.