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 0xb070df400ec80de9d473f999225a360b68fc5f4682b86b794120c961967b63ba. 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/11fb77e8-66c2-421f-92c3-42cbcc2f1711.json and https://artists.proofprofile.net/proofs/artist/11fb77e8-66c2-421f-92c3-42cbcc2f1711.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 0x878728694cd6c2292d87767cca329baae11eba3b3a679d56c74c002a212ef078. 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/QZNWY2197541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad6b33d35b1c877692b56538520e57d95941023fab849bf26430b2c38db175e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZFZ22308278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d10460d106c52dfe5417d394b3e930c15bbd19ad1038e2039fb535e39e33082. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZRP42385938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0b2bfdca23db81efe94ec62ce96e676c359c137fc73841a41b4cc7a94f846d. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZRP42385940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcbcfc14679667bae507131eb38c23b31a188a8f5dbc2ae0eb9d242cabd687b. 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/QZRP42385942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbedaac9bb7b8c2b730cfa09bed51c7acaa11110b7640c71fb96c4c3dd2355f4. 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/QZTBD2304652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6703d60567c9a2c58e11604e85c2208b06ea20bf1baa11dcb1a880fd79e2a24a. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/QZNWZ2406313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784778d456dd505ec320c178842792e11c00207cde9fca5be2080a2f122b34dd. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZRP52446687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efbfdf7ff17d7242e0c49d71696db8d7177d720db2281349036547f605f2d76. 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/QZTB42492106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3a7782d87b503b5e851adb5566f764557f8a990a822ce3924ffaf8e41d4d30. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZTBC2471199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1952eeeef24d2eccb762fa9d3e842a6c212a56dea7759c133f3f7a5f5848e494. 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/AUMGB2401575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75f27d1ff698b8a9570f91fb8d79d1c6eee68da24990699251f6dc83f6bb74d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T21:24:46Z), 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/AUMGB2401879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb364ba161731a287640246e4ef5d370eb466eb25105e1ee1bf5ff7702d33ba00. 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/AUMGB2401971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f9e31f2cc5369c2ff7551a3c7c288017fd831474594565b61ce637edf41071. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/AUMGB2500354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4474b5c1a23b69bd5559e8bd9589a8f3e8263c4ebf336f339a831a3bcad498. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/AUMGB2501500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb861cb7227f34b269a7ccaed70db88d4de454c7e46f32d03d259b7fa7716d959. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZGLM2374255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0b2bfdca23db81efe94ec62ce96e676c359c137fc73841a41b4cc7a94f846d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZRP42385940.
The Blessed and the Damned - Instrumental
Instrumental Indie Folk: Music for Focus and Work (Indie Folk Central)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce8d40d011ff5119f8d051dd065df240f25e7a7350feb52e8291b74c144fe8f. 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/QZNJX2409033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdcb475559ba5130dc8e374af4c88b30607405b254170fb228357cc9778e1e46. 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/QZTB62495319.
Best Indie Folk of 2023, Vol. 3 (Indie Folk Central)