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 0xf2c58845654b8ae50d847a96f3e25664d97b60bb906dabab30ae3f133985b006. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9924ea73-421a-4b83-8653-49f1e4787cc9.json and https://artists.proofprofile.net/proofs/artist/9924ea73-421a-4b83-8653-49f1e4787cc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jeannie: Jeannie Tied Her Bonnet Tight / Sharig / Willie Macrae's Jig
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 0x838a6c507342a15a0b0fe69ec06abb785eaae4ac71bd024a1b820b6f36d6adca. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/CAIM51800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd133ecab3ec58f5f2f6201c266b187b48292f7254af59ad36987ccfa47c66271. 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/CAIM51800002.
Minnie & Alex's Favourites: March of the Cameron Men / O'er the Moor Among the Heather / The Fir Tree / Willie Fraser's Strathspey / Dan R MacDonald's Favourite / Devaney's Goat / Mrs. Norman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc966219fab8eb99239f083a0e8a69a6f45735cf877986a07597ae317062bb422. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/CAIM51800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1aaa1ba7ed4ab73c99e8580d128e6811d9459379331c5343b464250ed9b3c2. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/CAIM51800004.
Jig to Reel: Kelly Peck's / Cregg's Pipes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a31bd3bbe6a626a150a3264615f457ea3eab0b60792859c388a04160f6df214. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAIM51800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa00f423d98c52d065bab65cb85956a79dbf45a40801e605d083fbe42308e99fc. 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/CAIM51800006.
Green Light Set: Green Light of the Lonely Souls / Bob the Banter / Peel Pier Fear / Castlerock Road
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44243cf792caacc7e4c7f82d5cad1e9f05ffe9edb944baacb3b52206ef42f58e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CAIM51800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6680b81c95e938214c3209e6d8d864b64defc710ba27b78089604bdc909689bf. 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/CAIM51800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c92d7b9023febefbef16a2b0ff18e345625ac3afc1f7009c6c96db12e497b3. 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/CAIM51800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8838b7ae3582df363965e2efc657f106e6ebd57828d32844b0b5212877c258d7. 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/CAIM51800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92504aa61c814e33f44218164322641e28b7d351efdda2dd8c064df771b6a30. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CAIM51800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260c788237b748b0d008218e1a3794fa87611825b4318bda8570b1e55827f7a6. 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/CAIM51800012.
The Barren Rocks of Aden / Mairi's Wedding
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8dd9d887ddf03356414d36c03378d43cd9162e521402c242b9b8030a98ff08. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/CAIM51800013.
3 Peaks: Three Peaks of South Uist / Bjork's Chauffeur (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fd33fb66846dfa555213de03f057d7692fbe9eb12ad7846ab096dd8a84bb86. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CAIM52200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179837c5ccde844907d9b68a303011747d52afe37cb23815e07a6c20036d335d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CAIM52200003.
Memories of Father Angus MacDonnell / Stumpie / A John Campbell Strathspey / Lord Seaforth / The Night We Had the Goats / St. Kilda's Wedding (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x569e02b287c1e9c62a89dd2c342274a014037101b540a5a11beedaac5fb88bcb. 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/CAIM52200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4078b25075d5b0d64e6f243ab34e704cf0d211f939ecc982c25c88e683c32c70. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/CAIM52200005.
The Galway Hornpipe / Sheepskin & Beeswax / Buntata 's Sgadan / The Antrim Rose (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce92027c9e185156eb242a62800f29f851bf3903898d6e7e0f7c0967cfc5c4f7. 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/CAIM52200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9efa23a692ce74d5bdfc945913f4350a2fa310465f7ca5d958057f8a59123f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CAIM52200007.
John MacDougall Set: Adrian and Maria's March / Allan MacQuarrie's Strathspey / Archie Dan T.V. Reel / A.A2-914 Reel / B.719 Reel (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1958ec1eec70634fe17c7673b1e68fac78086418911398d27e44c03f8771e3. 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/CAIM52200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb9ac45774c0883b4293eb6dc95d36d2b7f38b4c2851270d9ca835b0ea30c75. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CAIM52200011.
Pipe Set: Lucy Campbell / Dr. John MacInnes' fancy / John Morrison of Assynt House / Alick C. MacGregor (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b6d8c6a5c05765298ad8279d538f13956e5ef95a497e521595241044ecde68. 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/CAIM52200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a34ddbe8af054ee11b9c6ce82a0989e082b7434b73d2adf59b402aa1d7b80c. 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/USDY41905078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf032d9954504fd1c91cdb7d8912dedb245b1fbdbbf1467a52c67246518bc0a8. 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/USDY41905079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab1a98a1fdb0ebb3e8f1161b7371ff019fb64461f87655e415bb4a64b7efc70. 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/USDY41905080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff46944eee30e8e2bd6562ee5b98b3e6248892b7c8554906b6cfcd3931be3fe5. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/USDY41905081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e6400389b10c9d8730b37152464adad5dca475a559424a2da18f6501da8d46. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USDY41905082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665b5d836191f0d3245656c5afd4370bc12ee07fb2bb5340cf666885807b522d. 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/USDY41905083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd528f8156ca496c311b7578d2220985517a04998b41fd6a4cdf0f293375cfa2f. 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/USDY41905084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303f9b9707a7659667119f4c876f117d706c53aeb721459207cbfb805f0d7f5d. 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/USDY41905085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b04c1c411f6f062421496de6bf312bcf921f1545097e1e099edc3bff49dd104. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USDY41905086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e73f56b6bd855cf30d810d5fcc8f54aff549b72317b0618af6deebb7fa3881d. 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/USDY41905087.