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 0x214c068d84db3de5f2f40766cabac8479b13d963a5f9a2351e5db3a545f5ccbf. 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/54b4597e-6153-4c81-9386-4f0d9b507823.json and https://artists.proofprofile.net/proofs/artist/54b4597e-6153-4c81-9386-4f0d9b507823.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
24 Concert Etudes: The Classical Guitar Of Doug Smith
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 0x8a59353407d7343fe79932aeb8b2dba4dbbcd8d64d4c9abefb6a955daf8f8f10. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USY9R0910631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a330382873f113a88536900d6f7b46c1bc48db953fb9e185e9a249417eaa6f6. 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/USY9R0910622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d7ab8fe46eb606da51b9f4afdeab97b0515cb322a61fecbe0417246ba6d6a9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USY9R0910632.
I Guess That's Why They Call It the Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711e5f145cea36be009cd363b251c1bb843a6faf4895251a78e8688d540e15aa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:07:39Z), 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/USY9R0910633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c24789794d32d74cac7e3bc5afea9038c92e71585685c6d91037d3c6ff7852f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:45:22Z), 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/USY9R0910624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fe5072099d15cd2c3946a2763e5ff0e4842589579fef9ea820d353bd5169c6. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USY9R0910634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aee624c7ce906d6c4c8522ca51cb5193b667b1107bc8edba6df3d0ee2a03876. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USY9R0910635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4c176ab23acd91a6e4ac7a6235f0e0be79e923322684658f102e8b93a8932f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:54:08Z), 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/USY9R0910625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cfb87ddf08765fe3160aa9b28e4fde423e8e4d194aaa54fe09e7c606a765b3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USY9R0910636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462994ccd824ef8c095cf29919fef7402e662b349ed612f65155a5116b8cdaf9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:38Z), 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/USY9R0910626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce852f805ffc8006a6514bde5087489ec0cde184ffe7eb049fb3cc62e6face5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USY9R0910627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f644c694fb56285a75925c4e7a05cec7b71338d4d11a163bfa4fcae5d226dd. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USY9R0910637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33c7cb1ddcda43de438d05eb34100b4b77fb6722ae33b7e49720cf705d00bc1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USY9R0910628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50f8a4bbbfd54e37f8b3d5af60532fd66003336b95cba5bd8bbe870de0951a3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USY9R0910638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8d2ca32eaf5b40df742f6fb72d7bfdb80a3c546de1419bcfb9db55f6fc3d3b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:42Z), 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/USY9R0910629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c7981943c11157c43b03c0f0c9e2f60e53fa8da99f9096100ce107989f2b17. 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/USY9R0910639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970529d4c33cfe53d2b0323b007cf025dc6e4225516a9a8c62a1b7ffb988428b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USY9R0910630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7265709bcae276674aab1782bedcbcc6b986338a4b49a8df8ac53562096bc7df. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/USY9R0910640.
Dad's Song - A Father-Bride Wedding Dance - Single
Henry Mancini: Pink Guitar Acoustic Guitar Solos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba6f5feb34cebdf6f16287612eebc4b372be1e893ed5617666b2cef951b4938. 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/USU6V1120605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dddbee0e3b2d2bbaca20478faf7958311933b44e4ae2e9d21703f4f19558026. 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/USU6V1120614.