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 0x3e4a19b69d9b7f0c183ba5a8582776bb1a35d74db4957b92839153d7211e83ef. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07e7be8b-da0a-49f5-b7f9-a7502bdddce3.json and https://artists.proofprofile.net/proofs/artist/07e7be8b-da0a-49f5-b7f9-a7502bdddce3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Devaghar Ke Sawari (Bhojpuri Bhakti Song)
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 0x68ee4e59988b9ab0e88f0dda860f79a0e2e4351a628373dd2481a86d2518045d. 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/INY181600149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7378cc0e687ecb6e994213eb606af46e5daf731cf2572171138747affbe7ad. 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/INY181600155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eec47ff7cddcb096f9b37048b1c8d9f7334fcfc119cfa34cc042ebe5611eca. 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/INY181600153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6231b8f7493185ac445b9ca4ee3a8fdadc7cb4881a8c3c80fd9cf6cdc6b6c3. 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/INT502007148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db72c07f674c98844204d96a2da1890d241f428e043725bf367e1698054e84b. 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/INT501941514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194f785e3316b893618fae7696d5740bf84672a68bb43c663dbcfbbcd8043798. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/INT501941524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe534040cbfdcb1869bb8315335f289a8938ff26d5ca00d62318f429d6487e46. 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/INY181600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ec3c0a7829ec02777fa9570733f6e11c8302c52e6d1afc76ee379785c257ac. 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/INT502007134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd806a92d99b66068f712366e29b4b72816c09685c73a1335f75b1d386134fe37. 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/INT502007135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb92e2144af68502d6e4f803fd5aac3fe3e9f478fb27c05ff701ed43cb74b762. 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/INT502007136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85fcfeb27d95188def7bb5f7673b80ed165129efbebc70487d8a24511cc443f7. 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/INT502007137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597e4efd01634440505d72cd3d1794cbe1987469d6cac6774879765b81701758. 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/INT502007138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348046551bb4e09cd36d3a1d0c54ac2a273ccda4414addddd093adba49afa287. 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/INT502007139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f414338650751c4787e16342da4ba07225a71327cf9dfe6bdf6ee00df74cb4a. 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/INT502007140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a33e2bb51509c81e52c41325cccb7ed3e4df22255dda3d4568cb7c308f19bc. 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/INT502007141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc1a72910cd7ee30e7523b6c34f04f66f052918493d09fcd49d122d314daabf. 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/INT502007142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5b2f0a157a76033b9c9d1ce9b6eb1d1423541f3021c9b917cdc3ab989017b7. 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/INT502007143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718fcd591fbf5aed432362a28d276b474da616550bbcb0040ed4bdfe8c3c2236. 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/INT502007144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7071d29a84f039d07de1a9987afd2582e288896b186d4128479f9035a50ca6. 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/FRX991506854.