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 0x7f0318b5c8c7a2eb76ed80cd3a17ca9a7a829985a9f73c6e3cc5529d6689db63. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dec8fff7-a9e3-4920-b6bd-7a080924270c.json and https://artists.proofprofile.net/proofs/artist/dec8fff7-a9e3-4920-b6bd-7a080924270c.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 0x745066465dff58ab72f2d4c9807bceae5566177951e58a0c4b9eb7a2ced12e6c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZTAU2406147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e91d38bf4e4630cc90185adce2ad110f1015be1ebf64dadd0c8d94da6280538. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB32452257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c3d185f03986e6255cff30b3c4ba771026d5c6d4a2ca6235b9207afb27a6c1. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTB32445765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe5a60edcd2a9e33693062e1042c45132747ad6ffedba8802e75b60bbbd2be4. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/QZTBD2405417.
Call You Mine (Country Song) Slowed and Reverbed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda414fbb47af090752de655a300b35b9ca32d4675565735f3bed26dca3ae874e. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZWFK2427607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171c08d42e1d6fe260b041838aee092a64928515f4f580692088ec7e5b301884. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZWFV2419024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa888139afd9a7a5442245e6529bda837dcb21ddec85fa9cc5fd93ee9901f337b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFX2429050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171c08d42e1d6fe260b041838aee092a64928515f4f580692088ec7e5b301884. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZWFV2419024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bf9e5aad0ad40286467c866165812ea75b2f37e3aef23691267f7bfc530194. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ792494048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db273322d8987ff4cbd6400af8ddda81071183167d5754720562932f83bca8f. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZZ7M2439837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ba7ebc0b3cd78695cddc27012f68e80201884b071aa4fdc2a36f4da9ca9924. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZZ7Q2494113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bb4c38321ef395bf00f4b2a538297068d2174a7d4b86d271bf910b3e4e50e1. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/QT3EY2472710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a666449d648048a67e3d1bac2aad90bc3e9bc62cebe1de44cff5c6c7558bc65. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFYY2534079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6be9427f73408c7c9451742dc9700407aaf7f82e3064d31e7642e82e4cca01d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZFYY2598201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff47ddc6bbea2219b86825250e668948df96dedd1cad5356b2f82f236d9b6dde. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZFZ42571548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84e3650a2ffa7ec976eb7789c4743611e0aa874f4f9678ababf14ae00304b47c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA52531234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aff7726affcba6e2a99ddcb1bd06bf0b9f728a76b4e11ca0d68147c14eff958. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN42547290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe087fef3f2eac9a059e6d2c1044dc7bd509a7d785edc5a448c44febfb3b7f7d9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZHN62558136.