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 0x3e86de35f541d83ee57419df2a43c5c597330d1ba8d9f52f83e38f7df712b61c. 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/5438f797-f0c2-4d9d-a45c-f287909a5462.json and https://artists.proofprofile.net/proofs/artist/5438f797-f0c2-4d9d-a45c-f287909a5462.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Everybody (Backstreet's Back) - Radio Edit
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 0x63f0d74839be5e6a960158ce38b1850488c8a83ef6e735822a806f459cdbc862. 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/USJI19710083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f6cc477f0bb6f88acb9db90aaf6f631b1c1376a825c9fa6f41b5a8f3eeb3d4. 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/USJI19910614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdfcf231fb739c25bc4f63643772d629db57ca47766a29ab9d65c4f49ee42ea. 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/QM3E21602035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f0d74839be5e6a960158ce38b1850488c8a83ef6e735822a806f459cdbc862. 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/USJI19710083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f6cc477f0bb6f88acb9db90aaf6f631b1c1376a825c9fa6f41b5a8f3eeb3d4. 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/USJI19910614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc912e84380fa8fbd328971e3a1af0e27b63438dfb72bfa99c122d9b2838efd3. 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/USUS11900513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f0d74839be5e6a960158ce38b1850488c8a83ef6e735822a806f459cdbc862. 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/USJI19710083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bdda0ec391d492d7e4be16a929e018bbd3115eb1c77345a64d10261296cd48. 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/USJI19710149.
Everybody (Backstreet's Back) - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe575f4aea862bb895e3f84a0a9c1bd8abda386dfadd109b2aa0f56f9c3aebe0. 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/USJI19710084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f6cc477f0bb6f88acb9db90aaf6f631b1c1376a825c9fa6f41b5a8f3eeb3d4. 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/USJI19910614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5643ec80706a476ec0cb12e347e82155d90c2c8a3549a137f9fbf0a8b07232aa. 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/QM3E21902223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e744bb31cb9a8855b29d1c28ac38fdb927f11a51977f3b92974348f7f6bf7a. 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/USRC12003081.
Backstreet Bossa Nova (Daisy O'Dell Remix) - Bonus Track
ELVIS (Original Motion Picture Soundtrack) DELUXE EDITION
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c60eb66fe40170e5061b7b32b7d2ef3ebcdae9fbe0b728791746708b7f9be4. 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/USRC12300627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f0d74839be5e6a960158ce38b1850488c8a83ef6e735822a806f459cdbc862. 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/USJI19710083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f6cc477f0bb6f88acb9db90aaf6f631b1c1376a825c9fa6f41b5a8f3eeb3d4. 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/USJI19910614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe575f4aea862bb895e3f84a0a9c1bd8abda386dfadd109b2aa0f56f9c3aebe0. 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/USJI19710084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f0d74839be5e6a960158ce38b1850488c8a83ef6e735822a806f459cdbc862. 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/USJI19710083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bdda0ec391d492d7e4be16a929e018bbd3115eb1c77345a64d10261296cd48. 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/USJI19710149.